diff --git a/Makefile b/Makefile
index b2e9177..84aa25f 100644
--- a/Makefile
+++ b/Makefile
@@ -21,16 +21,20 @@ merge: sol-merger-check
 	mkdir /tmp/sol-merger && mkdir ./contracts/sol-merger && \
 	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileArtworkV2.sol /tmp/sol-merger && \
     sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileArtworkV3.sol /tmp/sol-merger && \
-    sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileArtworkV4_1.sol /tmp/sol-merger && \
+	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileArtworkV4_1.sol /tmp/sol-merger && \
+    sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileArtworkV4_2.sol /tmp/sol-merger && \
 	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileEnglishAuction.sol /tmp/sol-merger && \
 	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralFileAirdropV1.sol /tmp/sol-merger && \
 	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/OwnerData.sol /tmp/sol-merger && \
+	sol-merger --export-plugin SPDXLicenseRemovePlugin ./contracts/FeralfileToken.sol /tmp/sol-merger && \
 	mv /tmp/sol-merger/FeralfileArtworkV2.sol ./contracts/sol-merger/FeralfileExhibitionV2.sol && \
     mv /tmp/sol-merger/FeralfileArtworkV3.sol ./contracts/sol-merger/FeralfileExhibitionV3.sol && \
     mv /tmp/sol-merger/FeralfileArtworkV4_1.sol ./contracts/sol-merger/FeralfileExhibitionV4.sol && \
+	mv /tmp/sol-merger/FeralfileArtworkV4_2.sol ./contracts/sol-merger/FeralfileExhibitionV4_2.sol && \
 	mv /tmp/sol-merger/FeralfileEnglishAuction.sol ./contracts/sol-merger/FeralfileEnglishAuction.sol && \
 	mv /tmp/sol-merger/FeralFileAirdropV1.sol ./contracts/sol-merger/FeralFileAirdropV1.sol && \
-	mv /tmp/sol-merger/OwnerData.sol ./contracts/sol-merger/OwnerData.sol
+	mv /tmp/sol-merger/OwnerData.sol ./contracts/sol-merger/OwnerData.sol && \
+	mv /tmp/sol-merger/FeralfileToken.sol ./contracts/sol-merger/FeralfileToken.sol
 
 build-contract: check
 	npm install && \
@@ -41,23 +45,31 @@ build-contract: check
 	jq -r ".abi" build/contracts/FeralfileExhibitionV3.json > ./build/FeralfileExhibitionV3.abi && \
 	jq -r ".bytecode" build/contracts/FeralfileExhibitionV4_1.json > ./build/FeralfileExhibitionV4.bin && \
 	jq -r ".abi" build/contracts/FeralfileExhibitionV4_1.json > ./build/FeralfileExhibitionV4.abi && \
+	jq -r ".bytecode" build/contracts/FeralfileExhibitionV4_2.json > ./build/FeralfileExhibitionV4_2.bin && \
+	jq -r ".abi" build/contracts/FeralfileExhibitionV4_2.json > ./build/FeralfileExhibitionV4_2.abi && \
 	jq -r ".bytecode" build/contracts/FeralfileEnglishAuction.json > ./build/FeralfileEnglishAuction.bin && \
 	jq -r ".abi" build/contracts/FeralfileEnglishAuction.json > ./build/FeralfileEnglishAuction.abi && \
 	jq -r ".bytecode" build/contracts/FeralFileAirdropV1.json > ./build/FeralFileAirdropV1.bin && \
 	jq -r ".abi" build/contracts/FeralFileAirdropV1.json > ./build/FeralFileAirdropV1.abi && \
 	jq -r ".bytecode" build/contracts/OwnerData.json > ./build/OwnerData.bin && \
-	jq -r ".abi" build/contracts/OwnerData.json > ./build/OwnerData.abi
+	jq -r ".abi" build/contracts/OwnerData.json > ./build/OwnerData.abi && \
+	jq -r ".bytecode" build/contracts/FeralfileToken.json > ./build/FeralfileToken.bin && \
+	jq -r ".abi" build/contracts/FeralfileToken.json > ./build/FeralfileToken.abi
 
 build: build-contract
 	mkdir -p ./go-binding/feralfile-exhibition-v2 && \
 	mkdir -p ./go-binding/feralfile-exhibition-v3 && \
 	mkdir -p ./go-binding/feralfile-exhibition-v4 && \
+	mkdir -p ./go-binding/feralfile-exhibition-v4_2 && \
 	mkdir -p ./go-binding/feralfile-english-auction && \
 	mkdir -p ./go-binding/feralfile-airdrop-v1 && \
 	mkdir -p ./go-binding/owner-data && \
+	mkdir -p ./go-binding/feralfile-token && \
 	abigen --abi ./build/FeralfileExhibitionV2.abi --bin ./build/FeralfileExhibitionV2.bin --pkg feralfilev2 -type FeralfileExhibitionV2 --out ./go-binding/feralfile-exhibition-v2/abi.go
 	abigen --abi ./build/FeralfileExhibitionV3.abi --bin ./build/FeralfileExhibitionV3.bin --pkg feralfilev3 -type FeralfileExhibitionV3 --out ./go-binding/feralfile-exhibition-v3/abi.go
 	abigen --abi ./build/FeralfileExhibitionV4.abi --bin ./build/FeralfileExhibitionV4.bin --pkg feralfilev4 -type FeralfileExhibitionV4 --out ./go-binding/feralfile-exhibition-v4/abi.go
+	abigen --abi ./build/FeralfileExhibitionV4_2.abi --bin ./build/FeralfileExhibitionV4_2.bin --pkg feralfilev4_2 -type FeralfileExhibitionV4_2 --out ./go-binding/feralfile-exhibition-v4_2/abi.go
 	abigen --abi ./build/FeralfileEnglishAuction.abi --bin ./build/FeralfileEnglishAuction.bin --pkg english_auction -type FeralfileEnglishAuction --out ./go-binding/feralfile-english-auction/abi.go
 	abigen --abi ./build/FeralFileAirdropV1.abi --bin ./build/FeralFileAirdropV1.bin --pkg airdropv1 -type FeralFileAirdropV1 --out ./go-binding/feralfile-airdrop-v1/abi.go && \
-	abigen --abi ./build/OwnerData.abi --bin ./build/OwnerData.bin --pkg ownerdata -type OwnerData --out ./go-binding/owner-data/abi.go
+	abigen --abi ./build/OwnerData.abi --bin ./build/OwnerData.bin --pkg ownerdata -type OwnerData --out ./go-binding/owner-data/abi.go && \
+	abigen --abi ./build/FeralfileToken.abi --bin ./build/FeralfileToken.bin --pkg feralfiletoken -type FeralfileToken --out ./go-binding/feralfile-token/abi.go
diff --git a/contracts/FeralfileArtworkV4_1.sol b/contracts/FeralfileArtworkV4_1.sol
index 1626783..19d3cc6 100644
--- a/contracts/FeralfileArtworkV4_1.sol
+++ b/contracts/FeralfileArtworkV4_1.sol
@@ -94,7 +94,7 @@ contract FeralfileExhibitionV4_1 is FeralfileExhibitionV4 {
         bytes32 s_,
         uint8 v_,
         SaleData calldata saleData_
-    ) external payable override {
+    ) external payable override virtual {
         require(_selling, "FeralfileExhibitionV4: sale is not started");
         super._checkContractOwnedToken();
         validateSaleData(saleData_);
diff --git a/contracts/FeralfileArtworkV4_2.sol b/contracts/FeralfileArtworkV4_2.sol
new file mode 100644
index 0000000..ea841b6
--- /dev/null
+++ b/contracts/FeralfileArtworkV4_2.sol
@@ -0,0 +1,346 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.13;
+
+import { Strings } from "@openzeppelin/contracts/utils/Strings.sol"; 
+import { Base64 } from "@openzeppelin/contracts/utils/Base64.sol";
+import { FeralfileExhibitionV4_1 } from "./FeralfileArtworkV4_1.sol";
+import { FeralfileToken } from "./FeralfileToken.sol";
+
+contract FeralfileExhibitionV4_2 is FeralfileExhibitionV4_1 {
+
+    error TokenIDNotFound();
+    error MintNotEnabled();
+    error FunctionNotSupported();
+    error EmptyURI();
+
+    struct TokenInfo {
+        string imageURI;
+        bytes parameters;
+        uint256 coinAmount;
+    }
+
+    struct MintDataWithIndex {
+        uint256 seriesId;
+        uint256 tokenId;
+        address owner;
+        uint256 tokenIndex;
+    }
+
+    FeralfileToken private _erc20Token;
+
+    mapping(uint256 => TokenInfo) private _tokenInfos; // tokenID => tokenInfo
+    mapping(uint256 => uint256) private _tokenIndexes; // tokenID => tokenIndex
+
+    string public tokenPlaceholderAnimationURI;
+    string public tokenPlaceholderImageURI;
+
+    string public artworkFileURI;
+
+    constructor(
+        string memory name_,
+        string memory symbol_,
+        bool burnable_,
+        bool bridgeable_,
+        address signer_,
+        address vault_,
+        address costReceiver_,
+        string memory contractURI_,
+        uint256[] memory seriesIds_,
+        uint256[] memory seriesMaxSupplies_,
+        address erc20ContractAddress_
+    )
+        FeralfileExhibitionV4_1(
+            name_,
+            symbol_,
+            burnable_,
+            bridgeable_,
+            signer_,
+            vault_,
+            costReceiver_,
+            contractURI_,
+            seriesIds_,
+            seriesMaxSupplies_
+        )
+    {
+        _erc20Token = FeralfileToken(erc20ContractAddress_);
+    }
+    
+    /// @notice Mint new collection of Artwork
+    /// @dev the function iterates over the array of MintDataWithIndex to call the internal function _mintArtwork
+    /// @param data an array of MintDataWithIndex
+    function mintArtworksWithIndex(
+        MintDataWithIndex[] calldata data
+    ) external onlyAuthorized {
+        if (!mintable) {
+            revert MintNotEnabled();
+        }
+
+        for (uint256 i = 0; i < data.length; i++) {
+            _tokenIndexes[data[i].tokenId] = data[i].tokenIndex;
+            _mintArtwork(data[i].seriesId, data[i].tokenId, data[i].owner);
+        }
+    }
+
+    /// @notice override revert mint new collection of Artwork
+    function mintArtworks(MintData[] calldata) external override view onlyAuthorized {
+        revert FunctionNotSupported();
+    }
+
+    /// @notice Update the imageURI & parameters of an edition to a new value
+    function updateTokenInformation(uint256 tokenId, string calldata imageURI, bytes calldata parameters, uint256 coinAmount)
+        external
+        onlyAuthorized
+    {
+        if (!_exists(tokenId)) {
+            revert TokenIDNotFound();
+        }
+
+        TokenInfo memory tokenInfo = _tokenInfos[tokenId];
+        _tokenInfos[tokenId] = TokenInfo(imageURI, parameters, coinAmount);
+
+        // mint token for the owner
+        uint256 mintAmount = coinAmount - tokenInfo.coinAmount;
+        if (mintAmount > 0) {
+            address owner = ownerOf(tokenId);
+            _erc20Token.mint(owner, _convertToTokenUnits(mintAmount));
+        }
+    }
+
+    /// @notice pay to get artworks to a destination address. The pricing, costs and other details is included in the saleData
+    /// @param r_ - part of signature for validating parameters integrity
+    /// @param s_ - part of signature for validating parameters integrity
+    /// @param v_ - part of signature for validating parameters integrity
+    /// @param saleData_ - the sale data
+    function buyArtworks(
+        bytes32 r_,
+        bytes32 s_,
+        uint8 v_,
+        SaleData calldata saleData_
+    ) external payable override {
+        require(_selling, "FeralfileExhibitionV4: sale is not started");
+        super._checkContractOwnedToken();
+        validateSaleData(saleData_);
+
+        saleData_.payByVaultContract
+            ? vault.payForSale(r_, s_, v_, saleData_)
+            : require(
+                saleData_.price == msg.value,
+                "FeralfileExhibitionV4: invalid payment amount"
+            );
+
+        bytes32 message = keccak256(
+            abi.encode(block.chainid, address(this), saleData_)
+        );
+
+        if (!isValidSignature(message, r_, s_, v_)) {
+            revert InvalidSignature();
+        }
+
+        uint256 itemRevenue;
+        if (saleData_.price > saleData_.cost) {
+            itemRevenue =
+                (saleData_.price - saleData_.cost) /
+                saleData_.tokenIds.length;
+        }
+
+        uint256 distributedRevenue;
+        uint256 platformRevenue;
+        uint256 coinsTransferAmount = 0;
+        for (uint256 i = 0; i < saleData_.tokenIds.length; i++) {
+            // send NFT
+            _safeTransfer(
+                address(this),
+                saleData_.destination,
+                saleData_.tokenIds[i],
+                ""
+            );
+            // distribute royalty
+            RevenueShare[] memory revenueShares = saleData_.revenueShares[i];
+            uint256 remainingRev = itemRevenue;
+
+            // deduct advances payment from revenue
+            for (
+                uint256 j = 0;
+                j < revenueShares.length && remainingRev > 0;
+                j++
+            ) {
+                uint256 remainingAdvanceAmount = advances[
+                    revenueShares[j].recipient
+                ];
+                uint256 rev = remainingAdvanceAmount >= remainingRev
+                    ? remainingRev
+                    : remainingAdvanceAmount;
+                platformRevenue += rev;
+                advances[revenueShares[j].recipient] -= rev;
+                remainingRev -= rev;
+            }
+
+            // distribute revenue
+            if (remainingRev > 0) {
+                for (uint256 j = 0; j < revenueShares.length; j++) {
+                    address recipient = revenueShares[j].recipient;
+                    uint256 rev = (remainingRev * revenueShares[j].bps) / 10000;
+                    if (recipient == costReceiver) {
+                        platformRevenue += rev;
+                        continue;
+                    }
+                    distributedRevenue += rev;
+                    payable(recipient).transfer(rev);
+                }
+            }
+
+            TokenInfo memory tokenInfo = _tokenInfos[saleData_.tokenIds[i]];
+            coinsTransferAmount += tokenInfo.coinAmount;
+
+            emit BuyArtwork(saleData_.destination, saleData_.tokenIds[i]);
+        }
+
+        // Call the transfer function of the ERC20 contract
+        if (coinsTransferAmount > 0) {
+            uint256 coinUnits = _convertToTokenUnits(coinsTransferAmount);
+            if (_erc20Token.balanceOf(address(this)) > coinUnits) {
+                bool success = _erc20Token.transfer(saleData_.destination, coinUnits);
+                require(success, "FeralfileExhibitionV4: FeralfileToken transfer failed");
+            }
+        }
+
+        require(
+            saleData_.price - saleData_.cost >=
+                distributedRevenue + platformRevenue,
+            "FeralfileExhibitionV4: total bps over 10,000"
+        );
+
+        // Transfer cost, platform revenue and remaining funds
+        uint256 leftOver = saleData_.price - distributedRevenue;
+        if (leftOver > 0) {
+            payable(costReceiver).transfer(leftOver);
+        }        
+    }
+
+    function _convertToTokenUnits(uint256 amount) internal view returns (uint256) {
+        return amount * 10**_erc20Token.decimals();
+    }
+
+    /// @notice Update the base URI for all tokens
+    function setArtworkFileURI(string calldata uri) external virtual onlyOwner {
+        if (bytes(uri).length == 0) {
+            revert EmptyURI();
+        }
+
+        artworkFileURI = uri;
+    }
+
+    /// @notice Update tokenPlaceholderImageURI
+    function setTokenPlaceholderImageURI(string calldata uri) external virtual onlyOwner {
+        if (bytes(uri).length == 0) {
+            revert EmptyURI();
+        }
+
+        tokenPlaceholderImageURI = uri;
+    }
+
+    /// @notice Update tokenPlaceholderAnimationURI
+    function setTokenPlaceholderAnimationURI(string calldata uri) external virtual onlyOwner {
+        if (bytes(uri).length == 0) {
+            revert EmptyURI();
+        }
+
+        tokenPlaceholderAnimationURI = uri;
+    }
+
+    /// @notice _buildAnimationURI returns the animation url
+    /// @param parameters - the token paramters
+    function _buildAnimationURI(bytes memory parameters)
+        private
+        view
+        returns (string memory)
+    {
+        if (parameters.length == 0) {
+            return tokenPlaceholderAnimationURI;
+        }
+
+        return string(
+            abi.encodePacked(
+                "data:text/html;base64,",
+                 _buildIframe(Base64.encode(parameters), artworkFileURI)
+            )
+        );
+    }
+
+    /// @notice _buildImageURI returns the image url
+    /// @param imageURI - the token imageURI
+    function _buildImageURI(string memory imageURI)
+        private
+        view
+        returns (string memory)
+    {
+        if (bytes(imageURI).length == 0) {
+            return tokenPlaceholderImageURI;
+        }
+
+        return imageURI;
+    }
+
+    /// @notice _buildIframe returns a base64 encoded data for ff-frame
+    /// @param tokenParams - the paramteres which would bring into the artwork
+    /// @param artworkURI - the artwork file URI to be loaded into the iframe
+    function _buildIframe(string memory tokenParams, string memory artworkURI)
+        private
+        pure
+        returns (string memory)
+    {
+        return 
+            Base64.encode(
+                abi.encodePacked(
+                    "<!DOCTYPE html><html lang=\"en\"><head><meta charset=\"UTF-8\">",
+                    "<script>var defaultArtworkData=\"",
+                    tokenParams,
+                    "\";let allowOrigins = {\"https://feralfile.com\": !0};function initData(){document.getElementById(\"mainframe\").contentWindow.postMessage(defaultArtworkData, \"*\");}</script>",
+                    "</head><body style=\"overflow-x:hidden;padding:0;margin:0;width: 100%;\" onload=\"initData()\"><iframe id=\"mainframe\" style=\"display:block;padding:0;margin:0;border:none;width:100%;height:100vh;\" src=\"",
+                    artworkURI,
+                    "\"></iframe></body></html>"
+                )
+            );
+    }
+
+    /// @notice _buildDataURL returns a base64 encoded data for ff-frame
+    /// @param tokenID - the token ID for building artwork data
+    function _buildDataURL(uint256 tokenID) private view returns (string memory) {
+        TokenInfo memory tokenInfo = _tokenInfos[tokenID];
+        uint256 tokenIndex = _tokenIndexes[tokenID];
+
+        string memory tokenName = string(
+            abi.encodePacked(name(), " #", Strings.toString(tokenIndex + 1))
+        );
+
+        string memory json = string(
+            abi.encodePacked(
+                "{\"name\":\"", tokenName,
+                "\", \"external_url\":\"https://feralfile.com\", \"image\":\"", _buildImageURI(tokenInfo.imageURI),
+                "\", \"animation_url\":\"", _buildAnimationURI(tokenInfo.parameters),
+                "\"}"
+            )
+        );
+
+        return string(
+            abi.encodePacked(
+                "data:application/json;base64,", Base64.encode(bytes(json))
+            )
+        );
+    }
+
+    /// @notice A distinct Uniform Resource Identifier (URI) for a given asset.
+    function tokenURI(uint256 tokenId)
+        public
+        view
+        virtual
+        override
+        returns (string memory)
+    {
+        if (!_exists(tokenId)) {
+            revert TokenIDNotFound();
+        }
+
+        return _buildDataURL(tokenId);
+    }
+}
diff --git a/contracts/FeralfileToken.sol b/contracts/FeralfileToken.sol
new file mode 100644
index 0000000..406253f
--- /dev/null
+++ b/contracts/FeralfileToken.sol
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.13;
+
+import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import { Authorizable } from "./Authorizable.sol";
+
+contract FeralfileToken is ERC20, Authorizable {
+
+     error InvalidOwnersAndAmounts();
+
+    // Constructor to initialize the token with a name and symbol
+    constructor(string memory name_, string memory symbol_) ERC20(name_, symbol_) {}
+
+    /// @notice Mint new tokens to an owner
+    /// @param owner The address of the owner to receive the minted tokens
+    /// @param amount The amount of tokens to mint
+    function mint(address owner, uint256 amount) external onlyAuthorized {
+        _mint(owner, amount);
+    }
+
+    /// @notice Mint tokens for multiple owners
+    /// @param owners An array of addresses to receive the minted tokens
+    /// @param amounts An array of amounts of tokens to mint for each respective owner
+    function batchMint(address[] calldata owners, uint256[] calldata amounts) external virtual onlyAuthorized {
+        if (owners.length != amounts.length) {
+            revert InvalidOwnersAndAmounts();
+        }
+
+        for (uint256 i = 0; i < owners.length; i++) {
+            _mint(owners[i], amounts[i]);
+        }
+    }
+}
\ No newline at end of file
diff --git a/go-binding/feralfile-exhibition-v4/abi.go b/go-binding/feralfile-exhibition-v4/abi.go
index 646ca1c..a9c42f6 100644
--- a/go-binding/feralfile-exhibition-v4/abi.go
+++ b/go-binding/feralfile-exhibition-v4/abi.go
@@ -62,7 +62,7 @@ type IFeralfileSaleDataSaleData struct {
 // FeralfileExhibitionV4MetaData contains all meta data concerning the FeralfileExhibitionV4 contract.
 var FeralfileExhibitionV4MetaData = &bind.MetaData{
 	ABI: 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e\":\"setCostReceiver\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"signer_\",\"type\":\"address\"}],\"name\":\"setSigner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"string\",\"name\":\"baseURI_\",\"type\":\"string\"}],\"name\":\"setTokenBaseURI\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"vault_\",\"type\":\"address\"}],\"name\":\"setVault\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"signer\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"startSale\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"stopSaleAndBurn\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256[]\",\"name\":\"seriesIds\",\"type\":\"uint256[]\"},{\"internalType\":\"address[]\",\"name\":\"recipientAddresses\",\"type\":\"address[]\"}],\"name\":\"stopSaleAndTransfer\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tokenBaseURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"}],\"name\":\"tokenOfOwnerByIndex\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"tokensOfOwner\",\"outputs\":[{\"internalType\":\"uint256[]\",\"name\":\"\",\"type\":\"uint256[]\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"transferOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"trustees\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operatorFilterRegisterAddress\",\"type\":\"address\"}],\"name\":\"updateOperatorFilterRegistry\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"vault\",\"outputs\":[{\"internalType\":\"contractIFeralfileVault\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"addresses_\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"amounts_\",\"type\":\"uint256[]\"}],\"name\":\"setAdvanceSetting\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"oldAddresses_\",\"type\":\"address[]\"},{\"internalType\":\"address[]\",\"name\":\"newAddresses_\",\"type\":\"address[]\"}],\"name\":\"replaceAdvanceAddresses\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"r_\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"s_\",\"type\":\"bytes32\"},{\"internalType\":\"uint8\",\"name\":\"v_\",\"type\":\"uint8\"},{\"components\":[{\"internalType\":\"uint256\",\"name\":\"price\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"cost\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"expiryTime\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"destination\",\"type\":\"address\"},{\"internalType\":\"uint256[]\",\"name\":\"tokenIds\",\"type\":\"uint256[]\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"bps\",\"type\":\"uint256\"}],\"internalType\":\"structIFeralfileSaleData.RevenueShare[][]\",\"name\":\"revenueShares\",\"type\":\"tuple[][]\"},{\"internalType\":\"bool\",\"name\":\"payByVaultContract\",\"type\":\"bool\"}],\"internalType\":\"structIFeralfileSaleData.SaleData\",\"name\":\"saleData_\",\"type\":\"tuple\"}],\"name\":\"buyArtworks\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"}]",
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 }
 
 // FeralfileExhibitionV4ABI is the input ABI used to generate the binding from.
diff --git a/go-binding/feralfile-exhibition-v4_2/abi.go b/go-binding/feralfile-exhibition-v4_2/abi.go
new file mode 100644
index 0000000..948bbbe
--- /dev/null
+++ b/go-binding/feralfile-exhibition-v4_2/abi.go
@@ -0,0 +1,2930 @@
+// Code generated - DO NOT EDIT.
+// This file is a generated binding and any manual changes will be lost.
+
+package feralfilev4_2
+
+import (
+	"errors"
+	"math/big"
+	"strings"
+
+	ethereum "github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/event"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var (
+	_ = errors.New
+	_ = big.NewInt
+	_ = strings.NewReader
+	_ = ethereum.NotFound
+	_ = bind.Bind
+	_ = common.Big1
+	_ = types.BloomLookup
+	_ = event.NewSubscription
+	_ = abi.ConvertType
+)
+
+// FeralfileExhibitionV4Artwork is an auto generated low-level Go binding around an user-defined struct.
+type FeralfileExhibitionV4Artwork struct {
+	SeriesId *big.Int
+	TokenId  *big.Int
+}
+
+// FeralfileExhibitionV4MintData is an auto generated low-level Go binding around an user-defined struct.
+type FeralfileExhibitionV4MintData struct {
+	SeriesId *big.Int
+	TokenId  *big.Int
+	Owner    common.Address
+}
+
+// FeralfileExhibitionV42MintDataWithIndex is an auto generated low-level Go binding around an user-defined struct.
+type FeralfileExhibitionV42MintDataWithIndex struct {
+	SeriesId   *big.Int
+	TokenId    *big.Int
+	Owner      common.Address
+	TokenIndex *big.Int
+}
+
+// IFeralfileSaleDataRevenueShare is an auto generated low-level Go binding around an user-defined struct.
+type IFeralfileSaleDataRevenueShare struct {
+	Recipient common.Address
+	Bps       *big.Int
+}
+
+// IFeralfileSaleDataSaleData is an auto generated low-level Go binding around an user-defined struct.
+type IFeralfileSaleDataSaleData struct {
+	Price              *big.Int
+	Cost               *big.Int
+	ExpiryTime         *big.Int
+	Destination        common.Address
+	TokenIds           []*big.Int
+	RevenueShares      [][]IFeralfileSaleDataRevenueShare
+	PayByVaultContract bool
+}
+
+// FeralfileExhibitionV42MetaData contains all meta data concerning the FeralfileExhibitionV42 contract.
+var FeralfileExhibitionV42MetaData = &bind.MetaData{
+	ABI: 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y\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"bridgeable\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256[]\",\"name\":\"tokenIds\",\"type\":\"uint256[]\"}],\"name\":\"burnArtworks\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"burnable\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"codeVersion\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"contractURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"costReceiver\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getApproved\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"getArtwork\",\"outputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"internalType\":\"structFeralfileExhibitionV4.Artwork\",\"name\":\"\",\"type\":\"tuple\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"}],\"name\":\"isApprovedForAll\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"mintable\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"ownerOf\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"pauseSale\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_trustee\",\"type\":\"address\"}],\"name\":\"removeTrustee\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"renounceOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"oldAddresses_\",\"type\":\"address[]\"},{\"internalType\":\"address[]\",\"name\":\"newAddresses_\",\"type\":\"address[]\"}],\"name\":\"replaceAdvanceAddresses\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"resumeSale\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"bytes\",\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"safeTransferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"selling\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"}],\"name\":\"seriesMaxSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"}],\"name\":\"seriesTotalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"addresses_\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"amounts_\",\"type\":\"uint256[]\"}],\"name\":\"setAdvanceSetting\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operator\",\"type\":\"address\"},{\"internalType\":\"bool\",\"name\":\"approved\",\"type\":\"bool\"}],\"name\":\"setApprovalForAll\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"costReceiver_\",\"type\":\"address\"}],\"name\":\"setCostReceiver\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"signer_\",\"type\":\"address\"}],\"name\":\"setSigner\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"string\",\"name\":\"baseURI_\",\"type\":\"string\"}],\"name\":\"setTokenBaseURI\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"vault_\",\"type\":\"address\"}],\"name\":\"setVault\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"signer\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"startSale\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"stopSaleAndBurn\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256[]\",\"name\":\"seriesIds\",\"type\":\"uint256[]\"},{\"internalType\":\"address[]\",\"name\":\"recipientAddresses\",\"type\":\"address[]\"}],\"name\":\"stopSaleAndTransfer\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes4\",\"name\":\"interfaceId\",\"type\":\"bytes4\"}],\"name\":\"supportsInterface\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tokenBaseURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"index\",\"type\":\"uint256\"}],\"name\":\"tokenOfOwnerByIndex\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tokenPlaceholderAnimationURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"tokenPlaceholderImageURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"tokensOfOwner\",\"outputs\":[{\"internalType\":\"uint256[]\",\"name\":\"\",\"type\":\"uint256[]\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"transferOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"trustees\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"operatorFilterRegisterAddress\",\"type\":\"address\"}],\"name\":\"updateOperatorFilterRegistry\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"vault\",\"outputs\":[{\"internalType\":\"contractIFeralfileVault\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"stateMutability\":\"payable\",\"type\":\"receive\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"tokenIndex\",\"type\":\"uint256\"}],\"internalType\":\"structFeralfileExhibitionV4_2.MintDataWithIndex[]\",\"name\":\"data\",\"type\":\"tuple[]\"}],\"name\":\"mintArtworksWithIndex\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"components\":[{\"internalType\":\"uint256\",\"name\":\"seriesId\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"}],\"internalType\":\"structFeralfileExhibitionV4.MintData[]\",\"name\":\"\",\"type\":\"tuple[]\"}],\"name\":\"mintArtworks\",\"outputs\":[],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"},{\"internalType\":\"string\",\"name\":\"imageURI\",\"type\":\"string\"},{\"internalType\":\"bytes\",\"name\":\"parameters\",\"type\":\"bytes\"},{\"internalType\":\"uint256\",\"name\":\"coinAmount\",\"type\":\"uint256\"}],\"name\":\"updateTokenInformation\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"bytes32\",\"name\":\"r_\",\"type\":\"bytes32\"},{\"internalType\":\"bytes32\",\"name\":\"s_\",\"type\":\"bytes32\"},{\"internalType\":\"uint8\",\"name\":\"v_\",\"type\":\"uint8\"},{\"components\":[{\"internalType\":\"uint256\",\"name\":\"price\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"cost\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"expiryTime\",\"type\":\"uint256\"},{\"internalType\":\"address\",\"name\":\"destination\",\"type\":\"address\"},{\"internalType\":\"uint256[]\",\"name\":\"tokenIds\",\"type\":\"uint256[]\"},{\"components\":[{\"internalType\":\"address\",\"name\":\"recipient\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"bps\",\"type\":\"uint256\"}],\"internalType\":\"structIFeralfileSaleData.RevenueShare[][]\",\"name\":\"revenueShares\",\"type\":\"tuple[][]\"},{\"internalType\":\"bool\",\"name\":\"payByVaultContract\",\"type\":\"bool\"}],\"internalType\":\"structIFeralfileSaleData.SaleData\",\"name\":\"saleData_\",\"type\":\"tuple\"}],\"name\":\"buyArtworks\",\"outputs\":[],\"stateMutability\":\"payable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"string\",\"name\":\"uri\",\"type\":\"string\"}],\"name\":\"setArtworkFileURI\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"string\",\"name\":\"uri\",\"type\":\"string\"}],\"name\":\"setTokenPlaceholderImageURI\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"string\",\"name\":\"uri\",\"type\":\"string\"}],\"name\":\"setTokenPlaceholderAnimationURI\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"tokenId\",\"type\":\"uint256\"}],\"name\":\"tokenURI\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]",
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+}
+
+// FeralfileExhibitionV42ABI is the input ABI used to generate the binding from.
+// Deprecated: Use FeralfileExhibitionV42MetaData.ABI instead.
+var FeralfileExhibitionV42ABI = FeralfileExhibitionV42MetaData.ABI
+
+// FeralfileExhibitionV42Bin is the compiled bytecode used for deploying new contracts.
+// Deprecated: Use FeralfileExhibitionV42MetaData.Bin instead.
+var FeralfileExhibitionV42Bin = FeralfileExhibitionV42MetaData.Bin
+
+// DeployFeralfileExhibitionV42 deploys a new Ethereum contract, binding an instance of FeralfileExhibitionV42 to it.
+func DeployFeralfileExhibitionV42(auth *bind.TransactOpts, backend bind.ContractBackend, name_ string, symbol_ string, burnable_ bool, bridgeable_ bool, signer_ common.Address, vault_ common.Address, costReceiver_ common.Address, contractURI_ string, seriesIds_ []*big.Int, seriesMaxSupplies_ []*big.Int, erc20ContractAddress_ common.Address) (common.Address, *types.Transaction, *FeralfileExhibitionV42, error) {
+	parsed, err := FeralfileExhibitionV42MetaData.GetAbi()
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	if parsed == nil {
+		return common.Address{}, nil, nil, errors.New("GetABI returned nil")
+	}
+
+	address, tx, contract, err := bind.DeployContract(auth, *parsed, common.FromHex(FeralfileExhibitionV42Bin), backend, name_, symbol_, burnable_, bridgeable_, signer_, vault_, costReceiver_, contractURI_, seriesIds_, seriesMaxSupplies_, erc20ContractAddress_)
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	return address, tx, &FeralfileExhibitionV42{FeralfileExhibitionV42Caller: FeralfileExhibitionV42Caller{contract: contract}, FeralfileExhibitionV42Transactor: FeralfileExhibitionV42Transactor{contract: contract}, FeralfileExhibitionV42Filterer: FeralfileExhibitionV42Filterer{contract: contract}}, nil
+}
+
+// FeralfileExhibitionV42 is an auto generated Go binding around an Ethereum contract.
+type FeralfileExhibitionV42 struct {
+	FeralfileExhibitionV42Caller     // Read-only binding to the contract
+	FeralfileExhibitionV42Transactor // Write-only binding to the contract
+	FeralfileExhibitionV42Filterer   // Log filterer for contract events
+}
+
+// FeralfileExhibitionV42Caller is an auto generated read-only Go binding around an Ethereum contract.
+type FeralfileExhibitionV42Caller struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FeralfileExhibitionV42Transactor is an auto generated write-only Go binding around an Ethereum contract.
+type FeralfileExhibitionV42Transactor struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FeralfileExhibitionV42Filterer is an auto generated log filtering Go binding around an Ethereum contract events.
+type FeralfileExhibitionV42Filterer struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FeralfileExhibitionV42Session is an auto generated Go binding around an Ethereum contract,
+// with pre-set call and transact options.
+type FeralfileExhibitionV42Session struct {
+	Contract     *FeralfileExhibitionV42 // Generic contract binding to set the session for
+	CallOpts     bind.CallOpts           // Call options to use throughout this session
+	TransactOpts bind.TransactOpts       // Transaction auth options to use throughout this session
+}
+
+// FeralfileExhibitionV42CallerSession is an auto generated read-only Go binding around an Ethereum contract,
+// with pre-set call options.
+type FeralfileExhibitionV42CallerSession struct {
+	Contract *FeralfileExhibitionV42Caller // Generic contract caller binding to set the session for
+	CallOpts bind.CallOpts                 // Call options to use throughout this session
+}
+
+// FeralfileExhibitionV42TransactorSession is an auto generated write-only Go binding around an Ethereum contract,
+// with pre-set transact options.
+type FeralfileExhibitionV42TransactorSession struct {
+	Contract     *FeralfileExhibitionV42Transactor // Generic contract transactor binding to set the session for
+	TransactOpts bind.TransactOpts                 // Transaction auth options to use throughout this session
+}
+
+// FeralfileExhibitionV42Raw is an auto generated low-level Go binding around an Ethereum contract.
+type FeralfileExhibitionV42Raw struct {
+	Contract *FeralfileExhibitionV42 // Generic contract binding to access the raw methods on
+}
+
+// FeralfileExhibitionV42CallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
+type FeralfileExhibitionV42CallerRaw struct {
+	Contract *FeralfileExhibitionV42Caller // Generic read-only contract binding to access the raw methods on
+}
+
+// FeralfileExhibitionV42TransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
+type FeralfileExhibitionV42TransactorRaw struct {
+	Contract *FeralfileExhibitionV42Transactor // Generic write-only contract binding to access the raw methods on
+}
+
+// NewFeralfileExhibitionV42 creates a new instance of FeralfileExhibitionV42, bound to a specific deployed contract.
+func NewFeralfileExhibitionV42(address common.Address, backend bind.ContractBackend) (*FeralfileExhibitionV42, error) {
+	contract, err := bindFeralfileExhibitionV42(address, backend, backend, backend)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42{FeralfileExhibitionV42Caller: FeralfileExhibitionV42Caller{contract: contract}, FeralfileExhibitionV42Transactor: FeralfileExhibitionV42Transactor{contract: contract}, FeralfileExhibitionV42Filterer: FeralfileExhibitionV42Filterer{contract: contract}}, nil
+}
+
+// NewFeralfileExhibitionV42Caller creates a new read-only instance of FeralfileExhibitionV42, bound to a specific deployed contract.
+func NewFeralfileExhibitionV42Caller(address common.Address, caller bind.ContractCaller) (*FeralfileExhibitionV42Caller, error) {
+	contract, err := bindFeralfileExhibitionV42(address, caller, nil, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42Caller{contract: contract}, nil
+}
+
+// NewFeralfileExhibitionV42Transactor creates a new write-only instance of FeralfileExhibitionV42, bound to a specific deployed contract.
+func NewFeralfileExhibitionV42Transactor(address common.Address, transactor bind.ContractTransactor) (*FeralfileExhibitionV42Transactor, error) {
+	contract, err := bindFeralfileExhibitionV42(address, nil, transactor, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42Transactor{contract: contract}, nil
+}
+
+// NewFeralfileExhibitionV42Filterer creates a new log filterer instance of FeralfileExhibitionV42, bound to a specific deployed contract.
+func NewFeralfileExhibitionV42Filterer(address common.Address, filterer bind.ContractFilterer) (*FeralfileExhibitionV42Filterer, error) {
+	contract, err := bindFeralfileExhibitionV42(address, nil, nil, filterer)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42Filterer{contract: contract}, nil
+}
+
+// bindFeralfileExhibitionV42 binds a generic wrapper to an already deployed contract.
+func bindFeralfileExhibitionV42(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
+	parsed, err := FeralfileExhibitionV42MetaData.GetAbi()
+	if err != nil {
+		return nil, err
+	}
+	return bind.NewBoundContract(address, *parsed, caller, transactor, filterer), nil
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Raw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error {
+	return _FeralfileExhibitionV42.Contract.FeralfileExhibitionV42Caller.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Raw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.FeralfileExhibitionV42Transactor.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Raw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.FeralfileExhibitionV42Transactor.contract.Transact(opts, method, params...)
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerRaw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error {
+	return _FeralfileExhibitionV42.Contract.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.contract.Transact(opts, method, params...)
+}
+
+// OperatorFilterRegistry is a free data retrieval call binding the contract method 0xf07e7fd0.
+//
+// Solidity: function OperatorFilterRegistry() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) OperatorFilterRegistry(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "OperatorFilterRegistry")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// OperatorFilterRegistry is a free data retrieval call binding the contract method 0xf07e7fd0.
+//
+// Solidity: function OperatorFilterRegistry() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) OperatorFilterRegistry() (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.OperatorFilterRegistry(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// OperatorFilterRegistry is a free data retrieval call binding the contract method 0xf07e7fd0.
+//
+// Solidity: function OperatorFilterRegistry() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) OperatorFilterRegistry() (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.OperatorFilterRegistry(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Advances is a free data retrieval call binding the contract method 0x926ce44e.
+//
+// Solidity: function advances(address ) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Advances(opts *bind.CallOpts, arg0 common.Address) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "advances", arg0)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// Advances is a free data retrieval call binding the contract method 0x926ce44e.
+//
+// Solidity: function advances(address ) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Advances(arg0 common.Address) (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.Advances(&_FeralfileExhibitionV42.CallOpts, arg0)
+}
+
+// Advances is a free data retrieval call binding the contract method 0x926ce44e.
+//
+// Solidity: function advances(address ) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Advances(arg0 common.Address) (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.Advances(&_FeralfileExhibitionV42.CallOpts, arg0)
+}
+
+// ArtworkFileURI is a free data retrieval call binding the contract method 0xe9f585e0.
+//
+// Solidity: function artworkFileURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) ArtworkFileURI(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "artworkFileURI")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// ArtworkFileURI is a free data retrieval call binding the contract method 0xe9f585e0.
+//
+// Solidity: function artworkFileURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) ArtworkFileURI() (string, error) {
+	return _FeralfileExhibitionV42.Contract.ArtworkFileURI(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// ArtworkFileURI is a free data retrieval call binding the contract method 0xe9f585e0.
+//
+// Solidity: function artworkFileURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) ArtworkFileURI() (string, error) {
+	return _FeralfileExhibitionV42.Contract.ArtworkFileURI(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
+//
+// Solidity: function balanceOf(address owner) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) BalanceOf(opts *bind.CallOpts, owner common.Address) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "balanceOf", owner)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
+//
+// Solidity: function balanceOf(address owner) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) BalanceOf(owner common.Address) (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.BalanceOf(&_FeralfileExhibitionV42.CallOpts, owner)
+}
+
+// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
+//
+// Solidity: function balanceOf(address owner) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) BalanceOf(owner common.Address) (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.BalanceOf(&_FeralfileExhibitionV42.CallOpts, owner)
+}
+
+// Bridgeable is a free data retrieval call binding the contract method 0x530da8ef.
+//
+// Solidity: function bridgeable() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Bridgeable(opts *bind.CallOpts) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "bridgeable")
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Bridgeable is a free data retrieval call binding the contract method 0x530da8ef.
+//
+// Solidity: function bridgeable() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Bridgeable() (bool, error) {
+	return _FeralfileExhibitionV42.Contract.Bridgeable(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Bridgeable is a free data retrieval call binding the contract method 0x530da8ef.
+//
+// Solidity: function bridgeable() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Bridgeable() (bool, error) {
+	return _FeralfileExhibitionV42.Contract.Bridgeable(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Burnable is a free data retrieval call binding the contract method 0xa07c7ce4.
+//
+// Solidity: function burnable() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Burnable(opts *bind.CallOpts) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "burnable")
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Burnable is a free data retrieval call binding the contract method 0xa07c7ce4.
+//
+// Solidity: function burnable() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Burnable() (bool, error) {
+	return _FeralfileExhibitionV42.Contract.Burnable(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Burnable is a free data retrieval call binding the contract method 0xa07c7ce4.
+//
+// Solidity: function burnable() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Burnable() (bool, error) {
+	return _FeralfileExhibitionV42.Contract.Burnable(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// CodeVersion is a free data retrieval call binding the contract method 0x63e60230.
+//
+// Solidity: function codeVersion() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) CodeVersion(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "codeVersion")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// CodeVersion is a free data retrieval call binding the contract method 0x63e60230.
+//
+// Solidity: function codeVersion() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) CodeVersion() (string, error) {
+	return _FeralfileExhibitionV42.Contract.CodeVersion(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// CodeVersion is a free data retrieval call binding the contract method 0x63e60230.
+//
+// Solidity: function codeVersion() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) CodeVersion() (string, error) {
+	return _FeralfileExhibitionV42.Contract.CodeVersion(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// ContractURI is a free data retrieval call binding the contract method 0xe8a3d485.
+//
+// Solidity: function contractURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) ContractURI(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "contractURI")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// ContractURI is a free data retrieval call binding the contract method 0xe8a3d485.
+//
+// Solidity: function contractURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) ContractURI() (string, error) {
+	return _FeralfileExhibitionV42.Contract.ContractURI(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// ContractURI is a free data retrieval call binding the contract method 0xe8a3d485.
+//
+// Solidity: function contractURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) ContractURI() (string, error) {
+	return _FeralfileExhibitionV42.Contract.ContractURI(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// CostReceiver is a free data retrieval call binding the contract method 0xf4e638be.
+//
+// Solidity: function costReceiver() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) CostReceiver(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "costReceiver")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// CostReceiver is a free data retrieval call binding the contract method 0xf4e638be.
+//
+// Solidity: function costReceiver() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) CostReceiver() (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.CostReceiver(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// CostReceiver is a free data retrieval call binding the contract method 0xf4e638be.
+//
+// Solidity: function costReceiver() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) CostReceiver() (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.CostReceiver(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// GetApproved is a free data retrieval call binding the contract method 0x081812fc.
+//
+// Solidity: function getApproved(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) GetApproved(opts *bind.CallOpts, tokenId *big.Int) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "getApproved", tokenId)
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// GetApproved is a free data retrieval call binding the contract method 0x081812fc.
+//
+// Solidity: function getApproved(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) GetApproved(tokenId *big.Int) (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.GetApproved(&_FeralfileExhibitionV42.CallOpts, tokenId)
+}
+
+// GetApproved is a free data retrieval call binding the contract method 0x081812fc.
+//
+// Solidity: function getApproved(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) GetApproved(tokenId *big.Int) (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.GetApproved(&_FeralfileExhibitionV42.CallOpts, tokenId)
+}
+
+// GetArtwork is a free data retrieval call binding the contract method 0x167ddf6e.
+//
+// Solidity: function getArtwork(uint256 tokenId) view returns((uint256,uint256))
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) GetArtwork(opts *bind.CallOpts, tokenId *big.Int) (FeralfileExhibitionV4Artwork, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "getArtwork", tokenId)
+
+	if err != nil {
+		return *new(FeralfileExhibitionV4Artwork), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(FeralfileExhibitionV4Artwork)).(*FeralfileExhibitionV4Artwork)
+
+	return out0, err
+
+}
+
+// GetArtwork is a free data retrieval call binding the contract method 0x167ddf6e.
+//
+// Solidity: function getArtwork(uint256 tokenId) view returns((uint256,uint256))
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) GetArtwork(tokenId *big.Int) (FeralfileExhibitionV4Artwork, error) {
+	return _FeralfileExhibitionV42.Contract.GetArtwork(&_FeralfileExhibitionV42.CallOpts, tokenId)
+}
+
+// GetArtwork is a free data retrieval call binding the contract method 0x167ddf6e.
+//
+// Solidity: function getArtwork(uint256 tokenId) view returns((uint256,uint256))
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) GetArtwork(tokenId *big.Int) (FeralfileExhibitionV4Artwork, error) {
+	return _FeralfileExhibitionV42.Contract.GetArtwork(&_FeralfileExhibitionV42.CallOpts, tokenId)
+}
+
+// IsApprovedForAll is a free data retrieval call binding the contract method 0xe985e9c5.
+//
+// Solidity: function isApprovedForAll(address owner, address operator) view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) IsApprovedForAll(opts *bind.CallOpts, owner common.Address, operator common.Address) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "isApprovedForAll", owner, operator)
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// IsApprovedForAll is a free data retrieval call binding the contract method 0xe985e9c5.
+//
+// Solidity: function isApprovedForAll(address owner, address operator) view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) IsApprovedForAll(owner common.Address, operator common.Address) (bool, error) {
+	return _FeralfileExhibitionV42.Contract.IsApprovedForAll(&_FeralfileExhibitionV42.CallOpts, owner, operator)
+}
+
+// IsApprovedForAll is a free data retrieval call binding the contract method 0xe985e9c5.
+//
+// Solidity: function isApprovedForAll(address owner, address operator) view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) IsApprovedForAll(owner common.Address, operator common.Address) (bool, error) {
+	return _FeralfileExhibitionV42.Contract.IsApprovedForAll(&_FeralfileExhibitionV42.CallOpts, owner, operator)
+}
+
+// MintArtworks is a free data retrieval call binding the contract method 0x8cba1c67.
+//
+// Solidity: function mintArtworks((uint256,uint256,address)[] ) view returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) MintArtworks(opts *bind.CallOpts, arg0 []FeralfileExhibitionV4MintData) error {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "mintArtworks", arg0)
+
+	if err != nil {
+		return err
+	}
+
+	return err
+
+}
+
+// MintArtworks is a free data retrieval call binding the contract method 0x8cba1c67.
+//
+// Solidity: function mintArtworks((uint256,uint256,address)[] ) view returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) MintArtworks(arg0 []FeralfileExhibitionV4MintData) error {
+	return _FeralfileExhibitionV42.Contract.MintArtworks(&_FeralfileExhibitionV42.CallOpts, arg0)
+}
+
+// MintArtworks is a free data retrieval call binding the contract method 0x8cba1c67.
+//
+// Solidity: function mintArtworks((uint256,uint256,address)[] ) view returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) MintArtworks(arg0 []FeralfileExhibitionV4MintData) error {
+	return _FeralfileExhibitionV42.Contract.MintArtworks(&_FeralfileExhibitionV42.CallOpts, arg0)
+}
+
+// Mintable is a free data retrieval call binding the contract method 0x4bf365df.
+//
+// Solidity: function mintable() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Mintable(opts *bind.CallOpts) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "mintable")
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Mintable is a free data retrieval call binding the contract method 0x4bf365df.
+//
+// Solidity: function mintable() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Mintable() (bool, error) {
+	return _FeralfileExhibitionV42.Contract.Mintable(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Mintable is a free data retrieval call binding the contract method 0x4bf365df.
+//
+// Solidity: function mintable() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Mintable() (bool, error) {
+	return _FeralfileExhibitionV42.Contract.Mintable(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Name(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "name")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Name() (string, error) {
+	return _FeralfileExhibitionV42.Contract.Name(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Name() (string, error) {
+	return _FeralfileExhibitionV42.Contract.Name(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Owner is a free data retrieval call binding the contract method 0x8da5cb5b.
+//
+// Solidity: function owner() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Owner(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "owner")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// Owner is a free data retrieval call binding the contract method 0x8da5cb5b.
+//
+// Solidity: function owner() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Owner() (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.Owner(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Owner is a free data retrieval call binding the contract method 0x8da5cb5b.
+//
+// Solidity: function owner() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Owner() (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.Owner(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// OwnerOf is a free data retrieval call binding the contract method 0x6352211e.
+//
+// Solidity: function ownerOf(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) OwnerOf(opts *bind.CallOpts, tokenId *big.Int) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "ownerOf", tokenId)
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// OwnerOf is a free data retrieval call binding the contract method 0x6352211e.
+//
+// Solidity: function ownerOf(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) OwnerOf(tokenId *big.Int) (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.OwnerOf(&_FeralfileExhibitionV42.CallOpts, tokenId)
+}
+
+// OwnerOf is a free data retrieval call binding the contract method 0x6352211e.
+//
+// Solidity: function ownerOf(uint256 tokenId) view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) OwnerOf(tokenId *big.Int) (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.OwnerOf(&_FeralfileExhibitionV42.CallOpts, tokenId)
+}
+
+// Selling is a free data retrieval call binding the contract method 0x23aed228.
+//
+// Solidity: function selling() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Selling(opts *bind.CallOpts) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "selling")
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Selling is a free data retrieval call binding the contract method 0x23aed228.
+//
+// Solidity: function selling() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Selling() (bool, error) {
+	return _FeralfileExhibitionV42.Contract.Selling(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Selling is a free data retrieval call binding the contract method 0x23aed228.
+//
+// Solidity: function selling() view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Selling() (bool, error) {
+	return _FeralfileExhibitionV42.Contract.Selling(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// SeriesMaxSupply is a free data retrieval call binding the contract method 0xeb5c60f2.
+//
+// Solidity: function seriesMaxSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) SeriesMaxSupply(opts *bind.CallOpts, seriesId *big.Int) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "seriesMaxSupply", seriesId)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// SeriesMaxSupply is a free data retrieval call binding the contract method 0xeb5c60f2.
+//
+// Solidity: function seriesMaxSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SeriesMaxSupply(seriesId *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.SeriesMaxSupply(&_FeralfileExhibitionV42.CallOpts, seriesId)
+}
+
+// SeriesMaxSupply is a free data retrieval call binding the contract method 0xeb5c60f2.
+//
+// Solidity: function seriesMaxSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) SeriesMaxSupply(seriesId *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.SeriesMaxSupply(&_FeralfileExhibitionV42.CallOpts, seriesId)
+}
+
+// SeriesTotalSupply is a free data retrieval call binding the contract method 0x7f06ee06.
+//
+// Solidity: function seriesTotalSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) SeriesTotalSupply(opts *bind.CallOpts, seriesId *big.Int) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "seriesTotalSupply", seriesId)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// SeriesTotalSupply is a free data retrieval call binding the contract method 0x7f06ee06.
+//
+// Solidity: function seriesTotalSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SeriesTotalSupply(seriesId *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.SeriesTotalSupply(&_FeralfileExhibitionV42.CallOpts, seriesId)
+}
+
+// SeriesTotalSupply is a free data retrieval call binding the contract method 0x7f06ee06.
+//
+// Solidity: function seriesTotalSupply(uint256 seriesId) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) SeriesTotalSupply(seriesId *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.SeriesTotalSupply(&_FeralfileExhibitionV42.CallOpts, seriesId)
+}
+
+// Signer is a free data retrieval call binding the contract method 0x238ac933.
+//
+// Solidity: function signer() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Signer(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "signer")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// Signer is a free data retrieval call binding the contract method 0x238ac933.
+//
+// Solidity: function signer() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Signer() (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.Signer(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Signer is a free data retrieval call binding the contract method 0x238ac933.
+//
+// Solidity: function signer() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Signer() (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.Signer(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// SupportsInterface is a free data retrieval call binding the contract method 0x01ffc9a7.
+//
+// Solidity: function supportsInterface(bytes4 interfaceId) view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) SupportsInterface(opts *bind.CallOpts, interfaceId [4]byte) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "supportsInterface", interfaceId)
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// SupportsInterface is a free data retrieval call binding the contract method 0x01ffc9a7.
+//
+// Solidity: function supportsInterface(bytes4 interfaceId) view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SupportsInterface(interfaceId [4]byte) (bool, error) {
+	return _FeralfileExhibitionV42.Contract.SupportsInterface(&_FeralfileExhibitionV42.CallOpts, interfaceId)
+}
+
+// SupportsInterface is a free data retrieval call binding the contract method 0x01ffc9a7.
+//
+// Solidity: function supportsInterface(bytes4 interfaceId) view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) SupportsInterface(interfaceId [4]byte) (bool, error) {
+	return _FeralfileExhibitionV42.Contract.SupportsInterface(&_FeralfileExhibitionV42.CallOpts, interfaceId)
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Symbol(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "symbol")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Symbol() (string, error) {
+	return _FeralfileExhibitionV42.Contract.Symbol(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Symbol() (string, error) {
+	return _FeralfileExhibitionV42.Contract.Symbol(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// TokenBaseURI is a free data retrieval call binding the contract method 0x4e99b800.
+//
+// Solidity: function tokenBaseURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) TokenBaseURI(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "tokenBaseURI")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// TokenBaseURI is a free data retrieval call binding the contract method 0x4e99b800.
+//
+// Solidity: function tokenBaseURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) TokenBaseURI() (string, error) {
+	return _FeralfileExhibitionV42.Contract.TokenBaseURI(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// TokenBaseURI is a free data retrieval call binding the contract method 0x4e99b800.
+//
+// Solidity: function tokenBaseURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) TokenBaseURI() (string, error) {
+	return _FeralfileExhibitionV42.Contract.TokenBaseURI(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// TokenOfOwnerByIndex is a free data retrieval call binding the contract method 0x2f745c59.
+//
+// Solidity: function tokenOfOwnerByIndex(address owner, uint256 index) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) TokenOfOwnerByIndex(opts *bind.CallOpts, owner common.Address, index *big.Int) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "tokenOfOwnerByIndex", owner, index)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// TokenOfOwnerByIndex is a free data retrieval call binding the contract method 0x2f745c59.
+//
+// Solidity: function tokenOfOwnerByIndex(address owner, uint256 index) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) TokenOfOwnerByIndex(owner common.Address, index *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.TokenOfOwnerByIndex(&_FeralfileExhibitionV42.CallOpts, owner, index)
+}
+
+// TokenOfOwnerByIndex is a free data retrieval call binding the contract method 0x2f745c59.
+//
+// Solidity: function tokenOfOwnerByIndex(address owner, uint256 index) view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) TokenOfOwnerByIndex(owner common.Address, index *big.Int) (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.TokenOfOwnerByIndex(&_FeralfileExhibitionV42.CallOpts, owner, index)
+}
+
+// TokenPlaceholderAnimationURI is a free data retrieval call binding the contract method 0xccdae73a.
+//
+// Solidity: function tokenPlaceholderAnimationURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) TokenPlaceholderAnimationURI(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "tokenPlaceholderAnimationURI")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// TokenPlaceholderAnimationURI is a free data retrieval call binding the contract method 0xccdae73a.
+//
+// Solidity: function tokenPlaceholderAnimationURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) TokenPlaceholderAnimationURI() (string, error) {
+	return _FeralfileExhibitionV42.Contract.TokenPlaceholderAnimationURI(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// TokenPlaceholderAnimationURI is a free data retrieval call binding the contract method 0xccdae73a.
+//
+// Solidity: function tokenPlaceholderAnimationURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) TokenPlaceholderAnimationURI() (string, error) {
+	return _FeralfileExhibitionV42.Contract.TokenPlaceholderAnimationURI(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// TokenPlaceholderImageURI is a free data retrieval call binding the contract method 0x3e41dd20.
+//
+// Solidity: function tokenPlaceholderImageURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) TokenPlaceholderImageURI(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "tokenPlaceholderImageURI")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// TokenPlaceholderImageURI is a free data retrieval call binding the contract method 0x3e41dd20.
+//
+// Solidity: function tokenPlaceholderImageURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) TokenPlaceholderImageURI() (string, error) {
+	return _FeralfileExhibitionV42.Contract.TokenPlaceholderImageURI(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// TokenPlaceholderImageURI is a free data retrieval call binding the contract method 0x3e41dd20.
+//
+// Solidity: function tokenPlaceholderImageURI() view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) TokenPlaceholderImageURI() (string, error) {
+	return _FeralfileExhibitionV42.Contract.TokenPlaceholderImageURI(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// TokenURI is a free data retrieval call binding the contract method 0xc87b56dd.
+//
+// Solidity: function tokenURI(uint256 tokenId) view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) TokenURI(opts *bind.CallOpts, tokenId *big.Int) (string, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "tokenURI", tokenId)
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// TokenURI is a free data retrieval call binding the contract method 0xc87b56dd.
+//
+// Solidity: function tokenURI(uint256 tokenId) view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) TokenURI(tokenId *big.Int) (string, error) {
+	return _FeralfileExhibitionV42.Contract.TokenURI(&_FeralfileExhibitionV42.CallOpts, tokenId)
+}
+
+// TokenURI is a free data retrieval call binding the contract method 0xc87b56dd.
+//
+// Solidity: function tokenURI(uint256 tokenId) view returns(string)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) TokenURI(tokenId *big.Int) (string, error) {
+	return _FeralfileExhibitionV42.Contract.TokenURI(&_FeralfileExhibitionV42.CallOpts, tokenId)
+}
+
+// TokensOfOwner is a free data retrieval call binding the contract method 0x8462151c.
+//
+// Solidity: function tokensOfOwner(address owner) view returns(uint256[])
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) TokensOfOwner(opts *bind.CallOpts, owner common.Address) ([]*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "tokensOfOwner", owner)
+
+	if err != nil {
+		return *new([]*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new([]*big.Int)).(*[]*big.Int)
+
+	return out0, err
+
+}
+
+// TokensOfOwner is a free data retrieval call binding the contract method 0x8462151c.
+//
+// Solidity: function tokensOfOwner(address owner) view returns(uint256[])
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) TokensOfOwner(owner common.Address) ([]*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.TokensOfOwner(&_FeralfileExhibitionV42.CallOpts, owner)
+}
+
+// TokensOfOwner is a free data retrieval call binding the contract method 0x8462151c.
+//
+// Solidity: function tokensOfOwner(address owner) view returns(uint256[])
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) TokensOfOwner(owner common.Address) ([]*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.TokensOfOwner(&_FeralfileExhibitionV42.CallOpts, owner)
+}
+
+// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
+//
+// Solidity: function totalSupply() view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) TotalSupply(opts *bind.CallOpts) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "totalSupply")
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
+//
+// Solidity: function totalSupply() view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) TotalSupply() (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.TotalSupply(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
+//
+// Solidity: function totalSupply() view returns(uint256)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) TotalSupply() (*big.Int, error) {
+	return _FeralfileExhibitionV42.Contract.TotalSupply(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Trustees is a free data retrieval call binding the contract method 0xeee608a4.
+//
+// Solidity: function trustees(address ) view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Trustees(opts *bind.CallOpts, arg0 common.Address) (bool, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "trustees", arg0)
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Trustees is a free data retrieval call binding the contract method 0xeee608a4.
+//
+// Solidity: function trustees(address ) view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Trustees(arg0 common.Address) (bool, error) {
+	return _FeralfileExhibitionV42.Contract.Trustees(&_FeralfileExhibitionV42.CallOpts, arg0)
+}
+
+// Trustees is a free data retrieval call binding the contract method 0xeee608a4.
+//
+// Solidity: function trustees(address ) view returns(bool)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Trustees(arg0 common.Address) (bool, error) {
+	return _FeralfileExhibitionV42.Contract.Trustees(&_FeralfileExhibitionV42.CallOpts, arg0)
+}
+
+// Vault is a free data retrieval call binding the contract method 0xfbfa77cf.
+//
+// Solidity: function vault() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Caller) Vault(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileExhibitionV42.contract.Call(opts, &out, "vault")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// Vault is a free data retrieval call binding the contract method 0xfbfa77cf.
+//
+// Solidity: function vault() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Vault() (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.Vault(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// Vault is a free data retrieval call binding the contract method 0xfbfa77cf.
+//
+// Solidity: function vault() view returns(address)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42CallerSession) Vault() (common.Address, error) {
+	return _FeralfileExhibitionV42.Contract.Vault(&_FeralfileExhibitionV42.CallOpts)
+}
+
+// AddTrustee is a paid mutator transaction binding the contract method 0xdc78ac1c.
+//
+// Solidity: function addTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) AddTrustee(opts *bind.TransactOpts, _trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "addTrustee", _trustee)
+}
+
+// AddTrustee is a paid mutator transaction binding the contract method 0xdc78ac1c.
+//
+// Solidity: function addTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) AddTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.AddTrustee(&_FeralfileExhibitionV42.TransactOpts, _trustee)
+}
+
+// AddTrustee is a paid mutator transaction binding the contract method 0xdc78ac1c.
+//
+// Solidity: function addTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) AddTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.AddTrustee(&_FeralfileExhibitionV42.TransactOpts, _trustee)
+}
+
+// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
+//
+// Solidity: function approve(address operator, uint256 tokenId) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) Approve(opts *bind.TransactOpts, operator common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "approve", operator, tokenId)
+}
+
+// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
+//
+// Solidity: function approve(address operator, uint256 tokenId) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Approve(operator common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.Approve(&_FeralfileExhibitionV42.TransactOpts, operator, tokenId)
+}
+
+// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
+//
+// Solidity: function approve(address operator, uint256 tokenId) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) Approve(operator common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.Approve(&_FeralfileExhibitionV42.TransactOpts, operator, tokenId)
+}
+
+// BurnArtworks is a paid mutator transaction binding the contract method 0x21fe0c64.
+//
+// Solidity: function burnArtworks(uint256[] tokenIds) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) BurnArtworks(opts *bind.TransactOpts, tokenIds []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "burnArtworks", tokenIds)
+}
+
+// BurnArtworks is a paid mutator transaction binding the contract method 0x21fe0c64.
+//
+// Solidity: function burnArtworks(uint256[] tokenIds) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) BurnArtworks(tokenIds []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.BurnArtworks(&_FeralfileExhibitionV42.TransactOpts, tokenIds)
+}
+
+// BurnArtworks is a paid mutator transaction binding the contract method 0x21fe0c64.
+//
+// Solidity: function burnArtworks(uint256[] tokenIds) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) BurnArtworks(tokenIds []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.BurnArtworks(&_FeralfileExhibitionV42.TransactOpts, tokenIds)
+}
+
+// BuyArtworks is a paid mutator transaction binding the contract method 0x2977e4b3.
+//
+// Solidity: function buyArtworks(bytes32 r_, bytes32 s_, uint8 v_, (uint256,uint256,uint256,address,uint256[],(address,uint256)[][],bool) saleData_) payable returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) BuyArtworks(opts *bind.TransactOpts, r_ [32]byte, s_ [32]byte, v_ uint8, saleData_ IFeralfileSaleDataSaleData) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "buyArtworks", r_, s_, v_, saleData_)
+}
+
+// BuyArtworks is a paid mutator transaction binding the contract method 0x2977e4b3.
+//
+// Solidity: function buyArtworks(bytes32 r_, bytes32 s_, uint8 v_, (uint256,uint256,uint256,address,uint256[],(address,uint256)[][],bool) saleData_) payable returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) BuyArtworks(r_ [32]byte, s_ [32]byte, v_ uint8, saleData_ IFeralfileSaleDataSaleData) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.BuyArtworks(&_FeralfileExhibitionV42.TransactOpts, r_, s_, v_, saleData_)
+}
+
+// BuyArtworks is a paid mutator transaction binding the contract method 0x2977e4b3.
+//
+// Solidity: function buyArtworks(bytes32 r_, bytes32 s_, uint8 v_, (uint256,uint256,uint256,address,uint256[],(address,uint256)[][],bool) saleData_) payable returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) BuyArtworks(r_ [32]byte, s_ [32]byte, v_ uint8, saleData_ IFeralfileSaleDataSaleData) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.BuyArtworks(&_FeralfileExhibitionV42.TransactOpts, r_, s_, v_, saleData_)
+}
+
+// MintArtworksWithIndex is a paid mutator transaction binding the contract method 0x84f78930.
+//
+// Solidity: function mintArtworksWithIndex((uint256,uint256,address,uint256)[] data) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) MintArtworksWithIndex(opts *bind.TransactOpts, data []FeralfileExhibitionV42MintDataWithIndex) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "mintArtworksWithIndex", data)
+}
+
+// MintArtworksWithIndex is a paid mutator transaction binding the contract method 0x84f78930.
+//
+// Solidity: function mintArtworksWithIndex((uint256,uint256,address,uint256)[] data) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) MintArtworksWithIndex(data []FeralfileExhibitionV42MintDataWithIndex) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.MintArtworksWithIndex(&_FeralfileExhibitionV42.TransactOpts, data)
+}
+
+// MintArtworksWithIndex is a paid mutator transaction binding the contract method 0x84f78930.
+//
+// Solidity: function mintArtworksWithIndex((uint256,uint256,address,uint256)[] data) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) MintArtworksWithIndex(data []FeralfileExhibitionV42MintDataWithIndex) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.MintArtworksWithIndex(&_FeralfileExhibitionV42.TransactOpts, data)
+}
+
+// PauseSale is a paid mutator transaction binding the contract method 0x55367ba9.
+//
+// Solidity: function pauseSale() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) PauseSale(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "pauseSale")
+}
+
+// PauseSale is a paid mutator transaction binding the contract method 0x55367ba9.
+//
+// Solidity: function pauseSale() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) PauseSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.PauseSale(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// PauseSale is a paid mutator transaction binding the contract method 0x55367ba9.
+//
+// Solidity: function pauseSale() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) PauseSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.PauseSale(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// RemoveTrustee is a paid mutator transaction binding the contract method 0x03120506.
+//
+// Solidity: function removeTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) RemoveTrustee(opts *bind.TransactOpts, _trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "removeTrustee", _trustee)
+}
+
+// RemoveTrustee is a paid mutator transaction binding the contract method 0x03120506.
+//
+// Solidity: function removeTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) RemoveTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.RemoveTrustee(&_FeralfileExhibitionV42.TransactOpts, _trustee)
+}
+
+// RemoveTrustee is a paid mutator transaction binding the contract method 0x03120506.
+//
+// Solidity: function removeTrustee(address _trustee) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) RemoveTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.RemoveTrustee(&_FeralfileExhibitionV42.TransactOpts, _trustee)
+}
+
+// RenounceOwnership is a paid mutator transaction binding the contract method 0x715018a6.
+//
+// Solidity: function renounceOwnership() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) RenounceOwnership(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "renounceOwnership")
+}
+
+// RenounceOwnership is a paid mutator transaction binding the contract method 0x715018a6.
+//
+// Solidity: function renounceOwnership() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) RenounceOwnership() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.RenounceOwnership(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// RenounceOwnership is a paid mutator transaction binding the contract method 0x715018a6.
+//
+// Solidity: function renounceOwnership() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) RenounceOwnership() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.RenounceOwnership(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// ReplaceAdvanceAddresses is a paid mutator transaction binding the contract method 0x41a5626a.
+//
+// Solidity: function replaceAdvanceAddresses(address[] oldAddresses_, address[] newAddresses_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) ReplaceAdvanceAddresses(opts *bind.TransactOpts, oldAddresses_ []common.Address, newAddresses_ []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "replaceAdvanceAddresses", oldAddresses_, newAddresses_)
+}
+
+// ReplaceAdvanceAddresses is a paid mutator transaction binding the contract method 0x41a5626a.
+//
+// Solidity: function replaceAdvanceAddresses(address[] oldAddresses_, address[] newAddresses_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) ReplaceAdvanceAddresses(oldAddresses_ []common.Address, newAddresses_ []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.ReplaceAdvanceAddresses(&_FeralfileExhibitionV42.TransactOpts, oldAddresses_, newAddresses_)
+}
+
+// ReplaceAdvanceAddresses is a paid mutator transaction binding the contract method 0x41a5626a.
+//
+// Solidity: function replaceAdvanceAddresses(address[] oldAddresses_, address[] newAddresses_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) ReplaceAdvanceAddresses(oldAddresses_ []common.Address, newAddresses_ []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.ReplaceAdvanceAddresses(&_FeralfileExhibitionV42.TransactOpts, oldAddresses_, newAddresses_)
+}
+
+// ResumeSale is a paid mutator transaction binding the contract method 0x33e364cb.
+//
+// Solidity: function resumeSale() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) ResumeSale(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "resumeSale")
+}
+
+// ResumeSale is a paid mutator transaction binding the contract method 0x33e364cb.
+//
+// Solidity: function resumeSale() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) ResumeSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.ResumeSale(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// ResumeSale is a paid mutator transaction binding the contract method 0x33e364cb.
+//
+// Solidity: function resumeSale() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) ResumeSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.ResumeSale(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// SafeTransferFrom is a paid mutator transaction binding the contract method 0x42842e0e.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SafeTransferFrom(opts *bind.TransactOpts, from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "safeTransferFrom", from, to, tokenId)
+}
+
+// SafeTransferFrom is a paid mutator transaction binding the contract method 0x42842e0e.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SafeTransferFrom(from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SafeTransferFrom(&_FeralfileExhibitionV42.TransactOpts, from, to, tokenId)
+}
+
+// SafeTransferFrom is a paid mutator transaction binding the contract method 0x42842e0e.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SafeTransferFrom(from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SafeTransferFrom(&_FeralfileExhibitionV42.TransactOpts, from, to, tokenId)
+}
+
+// SafeTransferFrom0 is a paid mutator transaction binding the contract method 0xb88d4fde.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId, bytes data) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SafeTransferFrom0(opts *bind.TransactOpts, from common.Address, to common.Address, tokenId *big.Int, data []byte) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "safeTransferFrom0", from, to, tokenId, data)
+}
+
+// SafeTransferFrom0 is a paid mutator transaction binding the contract method 0xb88d4fde.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId, bytes data) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SafeTransferFrom0(from common.Address, to common.Address, tokenId *big.Int, data []byte) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SafeTransferFrom0(&_FeralfileExhibitionV42.TransactOpts, from, to, tokenId, data)
+}
+
+// SafeTransferFrom0 is a paid mutator transaction binding the contract method 0xb88d4fde.
+//
+// Solidity: function safeTransferFrom(address from, address to, uint256 tokenId, bytes data) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SafeTransferFrom0(from common.Address, to common.Address, tokenId *big.Int, data []byte) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SafeTransferFrom0(&_FeralfileExhibitionV42.TransactOpts, from, to, tokenId, data)
+}
+
+// SetAdvanceSetting is a paid mutator transaction binding the contract method 0x3c352b0d.
+//
+// Solidity: function setAdvanceSetting(address[] addresses_, uint256[] amounts_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SetAdvanceSetting(opts *bind.TransactOpts, addresses_ []common.Address, amounts_ []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "setAdvanceSetting", addresses_, amounts_)
+}
+
+// SetAdvanceSetting is a paid mutator transaction binding the contract method 0x3c352b0d.
+//
+// Solidity: function setAdvanceSetting(address[] addresses_, uint256[] amounts_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SetAdvanceSetting(addresses_ []common.Address, amounts_ []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetAdvanceSetting(&_FeralfileExhibitionV42.TransactOpts, addresses_, amounts_)
+}
+
+// SetAdvanceSetting is a paid mutator transaction binding the contract method 0x3c352b0d.
+//
+// Solidity: function setAdvanceSetting(address[] addresses_, uint256[] amounts_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SetAdvanceSetting(addresses_ []common.Address, amounts_ []*big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetAdvanceSetting(&_FeralfileExhibitionV42.TransactOpts, addresses_, amounts_)
+}
+
+// SetApprovalForAll is a paid mutator transaction binding the contract method 0xa22cb465.
+//
+// Solidity: function setApprovalForAll(address operator, bool approved) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SetApprovalForAll(opts *bind.TransactOpts, operator common.Address, approved bool) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "setApprovalForAll", operator, approved)
+}
+
+// SetApprovalForAll is a paid mutator transaction binding the contract method 0xa22cb465.
+//
+// Solidity: function setApprovalForAll(address operator, bool approved) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SetApprovalForAll(operator common.Address, approved bool) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetApprovalForAll(&_FeralfileExhibitionV42.TransactOpts, operator, approved)
+}
+
+// SetApprovalForAll is a paid mutator transaction binding the contract method 0xa22cb465.
+//
+// Solidity: function setApprovalForAll(address operator, bool approved) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SetApprovalForAll(operator common.Address, approved bool) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetApprovalForAll(&_FeralfileExhibitionV42.TransactOpts, operator, approved)
+}
+
+// SetArtworkFileURI is a paid mutator transaction binding the contract method 0x3c38598e.
+//
+// Solidity: function setArtworkFileURI(string uri) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SetArtworkFileURI(opts *bind.TransactOpts, uri string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "setArtworkFileURI", uri)
+}
+
+// SetArtworkFileURI is a paid mutator transaction binding the contract method 0x3c38598e.
+//
+// Solidity: function setArtworkFileURI(string uri) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SetArtworkFileURI(uri string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetArtworkFileURI(&_FeralfileExhibitionV42.TransactOpts, uri)
+}
+
+// SetArtworkFileURI is a paid mutator transaction binding the contract method 0x3c38598e.
+//
+// Solidity: function setArtworkFileURI(string uri) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SetArtworkFileURI(uri string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetArtworkFileURI(&_FeralfileExhibitionV42.TransactOpts, uri)
+}
+
+// SetCostReceiver is a paid mutator transaction binding the contract method 0x1623528f.
+//
+// Solidity: function setCostReceiver(address costReceiver_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SetCostReceiver(opts *bind.TransactOpts, costReceiver_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "setCostReceiver", costReceiver_)
+}
+
+// SetCostReceiver is a paid mutator transaction binding the contract method 0x1623528f.
+//
+// Solidity: function setCostReceiver(address costReceiver_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SetCostReceiver(costReceiver_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetCostReceiver(&_FeralfileExhibitionV42.TransactOpts, costReceiver_)
+}
+
+// SetCostReceiver is a paid mutator transaction binding the contract method 0x1623528f.
+//
+// Solidity: function setCostReceiver(address costReceiver_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SetCostReceiver(costReceiver_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetCostReceiver(&_FeralfileExhibitionV42.TransactOpts, costReceiver_)
+}
+
+// SetSigner is a paid mutator transaction binding the contract method 0x6c19e783.
+//
+// Solidity: function setSigner(address signer_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SetSigner(opts *bind.TransactOpts, signer_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "setSigner", signer_)
+}
+
+// SetSigner is a paid mutator transaction binding the contract method 0x6c19e783.
+//
+// Solidity: function setSigner(address signer_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SetSigner(signer_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetSigner(&_FeralfileExhibitionV42.TransactOpts, signer_)
+}
+
+// SetSigner is a paid mutator transaction binding the contract method 0x6c19e783.
+//
+// Solidity: function setSigner(address signer_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SetSigner(signer_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetSigner(&_FeralfileExhibitionV42.TransactOpts, signer_)
+}
+
+// SetTokenBaseURI is a paid mutator transaction binding the contract method 0x8ef79e91.
+//
+// Solidity: function setTokenBaseURI(string baseURI_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SetTokenBaseURI(opts *bind.TransactOpts, baseURI_ string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "setTokenBaseURI", baseURI_)
+}
+
+// SetTokenBaseURI is a paid mutator transaction binding the contract method 0x8ef79e91.
+//
+// Solidity: function setTokenBaseURI(string baseURI_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SetTokenBaseURI(baseURI_ string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetTokenBaseURI(&_FeralfileExhibitionV42.TransactOpts, baseURI_)
+}
+
+// SetTokenBaseURI is a paid mutator transaction binding the contract method 0x8ef79e91.
+//
+// Solidity: function setTokenBaseURI(string baseURI_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SetTokenBaseURI(baseURI_ string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetTokenBaseURI(&_FeralfileExhibitionV42.TransactOpts, baseURI_)
+}
+
+// SetTokenPlaceholderAnimationURI is a paid mutator transaction binding the contract method 0x9095e876.
+//
+// Solidity: function setTokenPlaceholderAnimationURI(string uri) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SetTokenPlaceholderAnimationURI(opts *bind.TransactOpts, uri string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "setTokenPlaceholderAnimationURI", uri)
+}
+
+// SetTokenPlaceholderAnimationURI is a paid mutator transaction binding the contract method 0x9095e876.
+//
+// Solidity: function setTokenPlaceholderAnimationURI(string uri) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SetTokenPlaceholderAnimationURI(uri string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetTokenPlaceholderAnimationURI(&_FeralfileExhibitionV42.TransactOpts, uri)
+}
+
+// SetTokenPlaceholderAnimationURI is a paid mutator transaction binding the contract method 0x9095e876.
+//
+// Solidity: function setTokenPlaceholderAnimationURI(string uri) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SetTokenPlaceholderAnimationURI(uri string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetTokenPlaceholderAnimationURI(&_FeralfileExhibitionV42.TransactOpts, uri)
+}
+
+// SetTokenPlaceholderImageURI is a paid mutator transaction binding the contract method 0xc9200e4f.
+//
+// Solidity: function setTokenPlaceholderImageURI(string uri) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SetTokenPlaceholderImageURI(opts *bind.TransactOpts, uri string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "setTokenPlaceholderImageURI", uri)
+}
+
+// SetTokenPlaceholderImageURI is a paid mutator transaction binding the contract method 0xc9200e4f.
+//
+// Solidity: function setTokenPlaceholderImageURI(string uri) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SetTokenPlaceholderImageURI(uri string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetTokenPlaceholderImageURI(&_FeralfileExhibitionV42.TransactOpts, uri)
+}
+
+// SetTokenPlaceholderImageURI is a paid mutator transaction binding the contract method 0xc9200e4f.
+//
+// Solidity: function setTokenPlaceholderImageURI(string uri) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SetTokenPlaceholderImageURI(uri string) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetTokenPlaceholderImageURI(&_FeralfileExhibitionV42.TransactOpts, uri)
+}
+
+// SetVault is a paid mutator transaction binding the contract method 0x6817031b.
+//
+// Solidity: function setVault(address vault_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) SetVault(opts *bind.TransactOpts, vault_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "setVault", vault_)
+}
+
+// SetVault is a paid mutator transaction binding the contract method 0x6817031b.
+//
+// Solidity: function setVault(address vault_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) SetVault(vault_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetVault(&_FeralfileExhibitionV42.TransactOpts, vault_)
+}
+
+// SetVault is a paid mutator transaction binding the contract method 0x6817031b.
+//
+// Solidity: function setVault(address vault_) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) SetVault(vault_ common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.SetVault(&_FeralfileExhibitionV42.TransactOpts, vault_)
+}
+
+// StartSale is a paid mutator transaction binding the contract method 0xb66a0e5d.
+//
+// Solidity: function startSale() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) StartSale(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "startSale")
+}
+
+// StartSale is a paid mutator transaction binding the contract method 0xb66a0e5d.
+//
+// Solidity: function startSale() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) StartSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.StartSale(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// StartSale is a paid mutator transaction binding the contract method 0xb66a0e5d.
+//
+// Solidity: function startSale() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) StartSale() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.StartSale(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// StopSaleAndBurn is a paid mutator transaction binding the contract method 0xb9b8311a.
+//
+// Solidity: function stopSaleAndBurn() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) StopSaleAndBurn(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "stopSaleAndBurn")
+}
+
+// StopSaleAndBurn is a paid mutator transaction binding the contract method 0xb9b8311a.
+//
+// Solidity: function stopSaleAndBurn() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) StopSaleAndBurn() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.StopSaleAndBurn(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// StopSaleAndBurn is a paid mutator transaction binding the contract method 0xb9b8311a.
+//
+// Solidity: function stopSaleAndBurn() returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) StopSaleAndBurn() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.StopSaleAndBurn(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// StopSaleAndTransfer is a paid mutator transaction binding the contract method 0x65a46e08.
+//
+// Solidity: function stopSaleAndTransfer(uint256[] seriesIds, address[] recipientAddresses) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) StopSaleAndTransfer(opts *bind.TransactOpts, seriesIds []*big.Int, recipientAddresses []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "stopSaleAndTransfer", seriesIds, recipientAddresses)
+}
+
+// StopSaleAndTransfer is a paid mutator transaction binding the contract method 0x65a46e08.
+//
+// Solidity: function stopSaleAndTransfer(uint256[] seriesIds, address[] recipientAddresses) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) StopSaleAndTransfer(seriesIds []*big.Int, recipientAddresses []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.StopSaleAndTransfer(&_FeralfileExhibitionV42.TransactOpts, seriesIds, recipientAddresses)
+}
+
+// StopSaleAndTransfer is a paid mutator transaction binding the contract method 0x65a46e08.
+//
+// Solidity: function stopSaleAndTransfer(uint256[] seriesIds, address[] recipientAddresses) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) StopSaleAndTransfer(seriesIds []*big.Int, recipientAddresses []common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.StopSaleAndTransfer(&_FeralfileExhibitionV42.TransactOpts, seriesIds, recipientAddresses)
+}
+
+// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
+//
+// Solidity: function transferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) TransferFrom(opts *bind.TransactOpts, from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "transferFrom", from, to, tokenId)
+}
+
+// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
+//
+// Solidity: function transferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) TransferFrom(from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.TransferFrom(&_FeralfileExhibitionV42.TransactOpts, from, to, tokenId)
+}
+
+// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
+//
+// Solidity: function transferFrom(address from, address to, uint256 tokenId) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) TransferFrom(from common.Address, to common.Address, tokenId *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.TransferFrom(&_FeralfileExhibitionV42.TransactOpts, from, to, tokenId)
+}
+
+// TransferOwnership is a paid mutator transaction binding the contract method 0xf2fde38b.
+//
+// Solidity: function transferOwnership(address newOwner) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) TransferOwnership(opts *bind.TransactOpts, newOwner common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "transferOwnership", newOwner)
+}
+
+// TransferOwnership is a paid mutator transaction binding the contract method 0xf2fde38b.
+//
+// Solidity: function transferOwnership(address newOwner) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) TransferOwnership(newOwner common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.TransferOwnership(&_FeralfileExhibitionV42.TransactOpts, newOwner)
+}
+
+// TransferOwnership is a paid mutator transaction binding the contract method 0xf2fde38b.
+//
+// Solidity: function transferOwnership(address newOwner) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) TransferOwnership(newOwner common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.TransferOwnership(&_FeralfileExhibitionV42.TransactOpts, newOwner)
+}
+
+// UpdateOperatorFilterRegistry is a paid mutator transaction binding the contract method 0x114ba8ee.
+//
+// Solidity: function updateOperatorFilterRegistry(address operatorFilterRegisterAddress) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) UpdateOperatorFilterRegistry(opts *bind.TransactOpts, operatorFilterRegisterAddress common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "updateOperatorFilterRegistry", operatorFilterRegisterAddress)
+}
+
+// UpdateOperatorFilterRegistry is a paid mutator transaction binding the contract method 0x114ba8ee.
+//
+// Solidity: function updateOperatorFilterRegistry(address operatorFilterRegisterAddress) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) UpdateOperatorFilterRegistry(operatorFilterRegisterAddress common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.UpdateOperatorFilterRegistry(&_FeralfileExhibitionV42.TransactOpts, operatorFilterRegisterAddress)
+}
+
+// UpdateOperatorFilterRegistry is a paid mutator transaction binding the contract method 0x114ba8ee.
+//
+// Solidity: function updateOperatorFilterRegistry(address operatorFilterRegisterAddress) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) UpdateOperatorFilterRegistry(operatorFilterRegisterAddress common.Address) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.UpdateOperatorFilterRegistry(&_FeralfileExhibitionV42.TransactOpts, operatorFilterRegisterAddress)
+}
+
+// UpdateTokenInformation is a paid mutator transaction binding the contract method 0xae474c3c.
+//
+// Solidity: function updateTokenInformation(uint256 tokenId, string imageURI, bytes parameters, uint256 coinAmount) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) UpdateTokenInformation(opts *bind.TransactOpts, tokenId *big.Int, imageURI string, parameters []byte, coinAmount *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.Transact(opts, "updateTokenInformation", tokenId, imageURI, parameters, coinAmount)
+}
+
+// UpdateTokenInformation is a paid mutator transaction binding the contract method 0xae474c3c.
+//
+// Solidity: function updateTokenInformation(uint256 tokenId, string imageURI, bytes parameters, uint256 coinAmount) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) UpdateTokenInformation(tokenId *big.Int, imageURI string, parameters []byte, coinAmount *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.UpdateTokenInformation(&_FeralfileExhibitionV42.TransactOpts, tokenId, imageURI, parameters, coinAmount)
+}
+
+// UpdateTokenInformation is a paid mutator transaction binding the contract method 0xae474c3c.
+//
+// Solidity: function updateTokenInformation(uint256 tokenId, string imageURI, bytes parameters, uint256 coinAmount) returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) UpdateTokenInformation(tokenId *big.Int, imageURI string, parameters []byte, coinAmount *big.Int) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.UpdateTokenInformation(&_FeralfileExhibitionV42.TransactOpts, tokenId, imageURI, parameters, coinAmount)
+}
+
+// Receive is a paid mutator transaction binding the contract receive function.
+//
+// Solidity: receive() payable returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Transactor) Receive(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.contract.RawTransact(opts, nil) // calldata is disallowed for receive function
+}
+
+// Receive is a paid mutator transaction binding the contract receive function.
+//
+// Solidity: receive() payable returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Session) Receive() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.Receive(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// Receive is a paid mutator transaction binding the contract receive function.
+//
+// Solidity: receive() payable returns()
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42TransactorSession) Receive() (*types.Transaction, error) {
+	return _FeralfileExhibitionV42.Contract.Receive(&_FeralfileExhibitionV42.TransactOpts)
+}
+
+// FeralfileExhibitionV42ApprovalIterator is returned from FilterApproval and is used to iterate over the raw logs and unpacked data for Approval events raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42ApprovalIterator struct {
+	Event *FeralfileExhibitionV42Approval // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV42ApprovalIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV42Approval)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV42Approval)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV42ApprovalIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV42ApprovalIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV42Approval represents a Approval event raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42Approval struct {
+	Owner    common.Address
+	Approved common.Address
+	TokenId  *big.Int
+	Raw      types.Log // Blockchain specific contextual infos
+}
+
+// FilterApproval is a free log retrieval operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
+//
+// Solidity: event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) FilterApproval(opts *bind.FilterOpts, owner []common.Address, approved []common.Address, tokenId []*big.Int) (*FeralfileExhibitionV42ApprovalIterator, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var approvedRule []interface{}
+	for _, approvedItem := range approved {
+		approvedRule = append(approvedRule, approvedItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.FilterLogs(opts, "Approval", ownerRule, approvedRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42ApprovalIterator{contract: _FeralfileExhibitionV42.contract, event: "Approval", logs: logs, sub: sub}, nil
+}
+
+// WatchApproval is a free log subscription operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
+//
+// Solidity: event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) WatchApproval(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV42Approval, owner []common.Address, approved []common.Address, tokenId []*big.Int) (event.Subscription, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var approvedRule []interface{}
+	for _, approvedItem := range approved {
+		approvedRule = append(approvedRule, approvedItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.WatchLogs(opts, "Approval", ownerRule, approvedRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV42Approval)
+				if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "Approval", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseApproval is a log parse operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
+//
+// Solidity: event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) ParseApproval(log types.Log) (*FeralfileExhibitionV42Approval, error) {
+	event := new(FeralfileExhibitionV42Approval)
+	if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "Approval", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV42ApprovalForAllIterator is returned from FilterApprovalForAll and is used to iterate over the raw logs and unpacked data for ApprovalForAll events raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42ApprovalForAllIterator struct {
+	Event *FeralfileExhibitionV42ApprovalForAll // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV42ApprovalForAllIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV42ApprovalForAll)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV42ApprovalForAll)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV42ApprovalForAllIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV42ApprovalForAllIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV42ApprovalForAll represents a ApprovalForAll event raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42ApprovalForAll struct {
+	Owner    common.Address
+	Operator common.Address
+	Approved bool
+	Raw      types.Log // Blockchain specific contextual infos
+}
+
+// FilterApprovalForAll is a free log retrieval operation binding the contract event 0x17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31.
+//
+// Solidity: event ApprovalForAll(address indexed owner, address indexed operator, bool approved)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) FilterApprovalForAll(opts *bind.FilterOpts, owner []common.Address, operator []common.Address) (*FeralfileExhibitionV42ApprovalForAllIterator, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var operatorRule []interface{}
+	for _, operatorItem := range operator {
+		operatorRule = append(operatorRule, operatorItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.FilterLogs(opts, "ApprovalForAll", ownerRule, operatorRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42ApprovalForAllIterator{contract: _FeralfileExhibitionV42.contract, event: "ApprovalForAll", logs: logs, sub: sub}, nil
+}
+
+// WatchApprovalForAll is a free log subscription operation binding the contract event 0x17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31.
+//
+// Solidity: event ApprovalForAll(address indexed owner, address indexed operator, bool approved)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) WatchApprovalForAll(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV42ApprovalForAll, owner []common.Address, operator []common.Address) (event.Subscription, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var operatorRule []interface{}
+	for _, operatorItem := range operator {
+		operatorRule = append(operatorRule, operatorItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.WatchLogs(opts, "ApprovalForAll", ownerRule, operatorRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV42ApprovalForAll)
+				if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "ApprovalForAll", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseApprovalForAll is a log parse operation binding the contract event 0x17307eab39ab6107e8899845ad3d59bd9653f200f220920489ca2b5937696c31.
+//
+// Solidity: event ApprovalForAll(address indexed owner, address indexed operator, bool approved)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) ParseApprovalForAll(log types.Log) (*FeralfileExhibitionV42ApprovalForAll, error) {
+	event := new(FeralfileExhibitionV42ApprovalForAll)
+	if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "ApprovalForAll", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV42BurnArtworkIterator is returned from FilterBurnArtwork and is used to iterate over the raw logs and unpacked data for BurnArtwork events raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42BurnArtworkIterator struct {
+	Event *FeralfileExhibitionV42BurnArtwork // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV42BurnArtworkIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV42BurnArtwork)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV42BurnArtwork)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV42BurnArtworkIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV42BurnArtworkIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV42BurnArtwork represents a BurnArtwork event raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42BurnArtwork struct {
+	TokenId *big.Int
+	Raw     types.Log // Blockchain specific contextual infos
+}
+
+// FilterBurnArtwork is a free log retrieval operation binding the contract event 0xbde7938970372996ff103863625e348ef2bf8f38a5b02181be75aafef17c23d5.
+//
+// Solidity: event BurnArtwork(uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) FilterBurnArtwork(opts *bind.FilterOpts, tokenId []*big.Int) (*FeralfileExhibitionV42BurnArtworkIterator, error) {
+
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.FilterLogs(opts, "BurnArtwork", tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42BurnArtworkIterator{contract: _FeralfileExhibitionV42.contract, event: "BurnArtwork", logs: logs, sub: sub}, nil
+}
+
+// WatchBurnArtwork is a free log subscription operation binding the contract event 0xbde7938970372996ff103863625e348ef2bf8f38a5b02181be75aafef17c23d5.
+//
+// Solidity: event BurnArtwork(uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) WatchBurnArtwork(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV42BurnArtwork, tokenId []*big.Int) (event.Subscription, error) {
+
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.WatchLogs(opts, "BurnArtwork", tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV42BurnArtwork)
+				if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "BurnArtwork", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseBurnArtwork is a log parse operation binding the contract event 0xbde7938970372996ff103863625e348ef2bf8f38a5b02181be75aafef17c23d5.
+//
+// Solidity: event BurnArtwork(uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) ParseBurnArtwork(log types.Log) (*FeralfileExhibitionV42BurnArtwork, error) {
+	event := new(FeralfileExhibitionV42BurnArtwork)
+	if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "BurnArtwork", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV42BuyArtworkIterator is returned from FilterBuyArtwork and is used to iterate over the raw logs and unpacked data for BuyArtwork events raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42BuyArtworkIterator struct {
+	Event *FeralfileExhibitionV42BuyArtwork // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV42BuyArtworkIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV42BuyArtwork)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV42BuyArtwork)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV42BuyArtworkIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV42BuyArtworkIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV42BuyArtwork represents a BuyArtwork event raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42BuyArtwork struct {
+	Buyer   common.Address
+	TokenId *big.Int
+	Raw     types.Log // Blockchain specific contextual infos
+}
+
+// FilterBuyArtwork is a free log retrieval operation binding the contract event 0x0475389cd69b8d3163620b43283bf74e8fc71020c3c6cef2a529b5c405e9687f.
+//
+// Solidity: event BuyArtwork(address indexed buyer, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) FilterBuyArtwork(opts *bind.FilterOpts, buyer []common.Address, tokenId []*big.Int) (*FeralfileExhibitionV42BuyArtworkIterator, error) {
+
+	var buyerRule []interface{}
+	for _, buyerItem := range buyer {
+		buyerRule = append(buyerRule, buyerItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.FilterLogs(opts, "BuyArtwork", buyerRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42BuyArtworkIterator{contract: _FeralfileExhibitionV42.contract, event: "BuyArtwork", logs: logs, sub: sub}, nil
+}
+
+// WatchBuyArtwork is a free log subscription operation binding the contract event 0x0475389cd69b8d3163620b43283bf74e8fc71020c3c6cef2a529b5c405e9687f.
+//
+// Solidity: event BuyArtwork(address indexed buyer, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) WatchBuyArtwork(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV42BuyArtwork, buyer []common.Address, tokenId []*big.Int) (event.Subscription, error) {
+
+	var buyerRule []interface{}
+	for _, buyerItem := range buyer {
+		buyerRule = append(buyerRule, buyerItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.WatchLogs(opts, "BuyArtwork", buyerRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV42BuyArtwork)
+				if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "BuyArtwork", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseBuyArtwork is a log parse operation binding the contract event 0x0475389cd69b8d3163620b43283bf74e8fc71020c3c6cef2a529b5c405e9687f.
+//
+// Solidity: event BuyArtwork(address indexed buyer, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) ParseBuyArtwork(log types.Log) (*FeralfileExhibitionV42BuyArtwork, error) {
+	event := new(FeralfileExhibitionV42BuyArtwork)
+	if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "BuyArtwork", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV42NewArtworkIterator is returned from FilterNewArtwork and is used to iterate over the raw logs and unpacked data for NewArtwork events raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42NewArtworkIterator struct {
+	Event *FeralfileExhibitionV42NewArtwork // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV42NewArtworkIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV42NewArtwork)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV42NewArtwork)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV42NewArtworkIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV42NewArtworkIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV42NewArtwork represents a NewArtwork event raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42NewArtwork struct {
+	Owner    common.Address
+	SeriesId *big.Int
+	TokenId  *big.Int
+	Raw      types.Log // Blockchain specific contextual infos
+}
+
+// FilterNewArtwork is a free log retrieval operation binding the contract event 0x407d7da1d3b2b1871fbfa2b5b1c4657a3cc5711d3023c552798551c7ee301eea.
+//
+// Solidity: event NewArtwork(address indexed owner, uint256 indexed seriesId, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) FilterNewArtwork(opts *bind.FilterOpts, owner []common.Address, seriesId []*big.Int, tokenId []*big.Int) (*FeralfileExhibitionV42NewArtworkIterator, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var seriesIdRule []interface{}
+	for _, seriesIdItem := range seriesId {
+		seriesIdRule = append(seriesIdRule, seriesIdItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.FilterLogs(opts, "NewArtwork", ownerRule, seriesIdRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42NewArtworkIterator{contract: _FeralfileExhibitionV42.contract, event: "NewArtwork", logs: logs, sub: sub}, nil
+}
+
+// WatchNewArtwork is a free log subscription operation binding the contract event 0x407d7da1d3b2b1871fbfa2b5b1c4657a3cc5711d3023c552798551c7ee301eea.
+//
+// Solidity: event NewArtwork(address indexed owner, uint256 indexed seriesId, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) WatchNewArtwork(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV42NewArtwork, owner []common.Address, seriesId []*big.Int, tokenId []*big.Int) (event.Subscription, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var seriesIdRule []interface{}
+	for _, seriesIdItem := range seriesId {
+		seriesIdRule = append(seriesIdRule, seriesIdItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.WatchLogs(opts, "NewArtwork", ownerRule, seriesIdRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV42NewArtwork)
+				if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "NewArtwork", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseNewArtwork is a log parse operation binding the contract event 0x407d7da1d3b2b1871fbfa2b5b1c4657a3cc5711d3023c552798551c7ee301eea.
+//
+// Solidity: event NewArtwork(address indexed owner, uint256 indexed seriesId, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) ParseNewArtwork(log types.Log) (*FeralfileExhibitionV42NewArtwork, error) {
+	event := new(FeralfileExhibitionV42NewArtwork)
+	if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "NewArtwork", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV42OwnershipTransferredIterator is returned from FilterOwnershipTransferred and is used to iterate over the raw logs and unpacked data for OwnershipTransferred events raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42OwnershipTransferredIterator struct {
+	Event *FeralfileExhibitionV42OwnershipTransferred // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV42OwnershipTransferredIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV42OwnershipTransferred)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV42OwnershipTransferred)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV42OwnershipTransferredIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV42OwnershipTransferredIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV42OwnershipTransferred represents a OwnershipTransferred event raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42OwnershipTransferred struct {
+	PreviousOwner common.Address
+	NewOwner      common.Address
+	Raw           types.Log // Blockchain specific contextual infos
+}
+
+// FilterOwnershipTransferred is a free log retrieval operation binding the contract event 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0.
+//
+// Solidity: event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) FilterOwnershipTransferred(opts *bind.FilterOpts, previousOwner []common.Address, newOwner []common.Address) (*FeralfileExhibitionV42OwnershipTransferredIterator, error) {
+
+	var previousOwnerRule []interface{}
+	for _, previousOwnerItem := range previousOwner {
+		previousOwnerRule = append(previousOwnerRule, previousOwnerItem)
+	}
+	var newOwnerRule []interface{}
+	for _, newOwnerItem := range newOwner {
+		newOwnerRule = append(newOwnerRule, newOwnerItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.FilterLogs(opts, "OwnershipTransferred", previousOwnerRule, newOwnerRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42OwnershipTransferredIterator{contract: _FeralfileExhibitionV42.contract, event: "OwnershipTransferred", logs: logs, sub: sub}, nil
+}
+
+// WatchOwnershipTransferred is a free log subscription operation binding the contract event 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0.
+//
+// Solidity: event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) WatchOwnershipTransferred(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV42OwnershipTransferred, previousOwner []common.Address, newOwner []common.Address) (event.Subscription, error) {
+
+	var previousOwnerRule []interface{}
+	for _, previousOwnerItem := range previousOwner {
+		previousOwnerRule = append(previousOwnerRule, previousOwnerItem)
+	}
+	var newOwnerRule []interface{}
+	for _, newOwnerItem := range newOwner {
+		newOwnerRule = append(newOwnerRule, newOwnerItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.WatchLogs(opts, "OwnershipTransferred", previousOwnerRule, newOwnerRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV42OwnershipTransferred)
+				if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "OwnershipTransferred", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseOwnershipTransferred is a log parse operation binding the contract event 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0.
+//
+// Solidity: event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) ParseOwnershipTransferred(log types.Log) (*FeralfileExhibitionV42OwnershipTransferred, error) {
+	event := new(FeralfileExhibitionV42OwnershipTransferred)
+	if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "OwnershipTransferred", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileExhibitionV42TransferIterator is returned from FilterTransfer and is used to iterate over the raw logs and unpacked data for Transfer events raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42TransferIterator struct {
+	Event *FeralfileExhibitionV42Transfer // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileExhibitionV42TransferIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileExhibitionV42Transfer)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileExhibitionV42Transfer)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileExhibitionV42TransferIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileExhibitionV42TransferIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileExhibitionV42Transfer represents a Transfer event raised by the FeralfileExhibitionV42 contract.
+type FeralfileExhibitionV42Transfer struct {
+	From    common.Address
+	To      common.Address
+	TokenId *big.Int
+	Raw     types.Log // Blockchain specific contextual infos
+}
+
+// FilterTransfer is a free log retrieval operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
+//
+// Solidity: event Transfer(address indexed from, address indexed to, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) FilterTransfer(opts *bind.FilterOpts, from []common.Address, to []common.Address, tokenId []*big.Int) (*FeralfileExhibitionV42TransferIterator, error) {
+
+	var fromRule []interface{}
+	for _, fromItem := range from {
+		fromRule = append(fromRule, fromItem)
+	}
+	var toRule []interface{}
+	for _, toItem := range to {
+		toRule = append(toRule, toItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.FilterLogs(opts, "Transfer", fromRule, toRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileExhibitionV42TransferIterator{contract: _FeralfileExhibitionV42.contract, event: "Transfer", logs: logs, sub: sub}, nil
+}
+
+// WatchTransfer is a free log subscription operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
+//
+// Solidity: event Transfer(address indexed from, address indexed to, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) WatchTransfer(opts *bind.WatchOpts, sink chan<- *FeralfileExhibitionV42Transfer, from []common.Address, to []common.Address, tokenId []*big.Int) (event.Subscription, error) {
+
+	var fromRule []interface{}
+	for _, fromItem := range from {
+		fromRule = append(fromRule, fromItem)
+	}
+	var toRule []interface{}
+	for _, toItem := range to {
+		toRule = append(toRule, toItem)
+	}
+	var tokenIdRule []interface{}
+	for _, tokenIdItem := range tokenId {
+		tokenIdRule = append(tokenIdRule, tokenIdItem)
+	}
+
+	logs, sub, err := _FeralfileExhibitionV42.contract.WatchLogs(opts, "Transfer", fromRule, toRule, tokenIdRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileExhibitionV42Transfer)
+				if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "Transfer", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseTransfer is a log parse operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
+//
+// Solidity: event Transfer(address indexed from, address indexed to, uint256 indexed tokenId)
+func (_FeralfileExhibitionV42 *FeralfileExhibitionV42Filterer) ParseTransfer(log types.Log) (*FeralfileExhibitionV42Transfer, error) {
+	event := new(FeralfileExhibitionV42Transfer)
+	if err := _FeralfileExhibitionV42.contract.UnpackLog(event, "Transfer", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
diff --git a/go-binding/feralfile-token/abi.go b/go-binding/feralfile-token/abi.go
new file mode 100644
index 0000000..d12291d
--- /dev/null
+++ b/go-binding/feralfile-token/abi.go
@@ -0,0 +1,1143 @@
+// Code generated - DO NOT EDIT.
+// This file is a generated binding and any manual changes will be lost.
+
+package feralfiletoken
+
+import (
+	"errors"
+	"math/big"
+	"strings"
+
+	ethereum "github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/accounts/abi"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/event"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var (
+	_ = errors.New
+	_ = big.NewInt
+	_ = strings.NewReader
+	_ = ethereum.NotFound
+	_ = bind.Bind
+	_ = common.Big1
+	_ = types.BloomLookup
+	_ = event.NewSubscription
+	_ = abi.ConvertType
+)
+
+// FeralfileTokenMetaData contains all meta data concerning the FeralfileToken contract.
+var FeralfileTokenMetaData = &bind.MetaData{
+	ABI: "[{\"inputs\":[{\"internalType\":\"string\",\"name\":\"name_\",\"type\":\"string\"},{\"internalType\":\"string\",\"name\":\"symbol_\",\"type\":\"string\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"inputs\":[],\"name\":\"InvalidOwnersAndAmounts\",\"type\":\"error\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"previousOwner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnershipTransferred\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_trustee\",\"type\":\"address\"}],\"name\":\"addTrustee\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"subtractedValue\",\"type\":\"uint256\"}],\"name\":\"decreaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"addedValue\",\"type\":\"uint256\"}],\"name\":\"increaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"_trustee\",\"type\":\"address\"}],\"name\":\"removeTrustee\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"renounceOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"transferOwnership\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"\",\"type\":\"address\"}],\"name\":\"trustees\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address[]\",\"name\":\"owners\",\"type\":\"address[]\"},{\"internalType\":\"uint256[]\",\"name\":\"amounts\",\"type\":\"uint256[]\"}],\"name\":\"batchMint\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]",
+	Bin: "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+}
+
+// FeralfileTokenABI is the input ABI used to generate the binding from.
+// Deprecated: Use FeralfileTokenMetaData.ABI instead.
+var FeralfileTokenABI = FeralfileTokenMetaData.ABI
+
+// FeralfileTokenBin is the compiled bytecode used for deploying new contracts.
+// Deprecated: Use FeralfileTokenMetaData.Bin instead.
+var FeralfileTokenBin = FeralfileTokenMetaData.Bin
+
+// DeployFeralfileToken deploys a new Ethereum contract, binding an instance of FeralfileToken to it.
+func DeployFeralfileToken(auth *bind.TransactOpts, backend bind.ContractBackend, name_ string, symbol_ string) (common.Address, *types.Transaction, *FeralfileToken, error) {
+	parsed, err := FeralfileTokenMetaData.GetAbi()
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	if parsed == nil {
+		return common.Address{}, nil, nil, errors.New("GetABI returned nil")
+	}
+
+	address, tx, contract, err := bind.DeployContract(auth, *parsed, common.FromHex(FeralfileTokenBin), backend, name_, symbol_)
+	if err != nil {
+		return common.Address{}, nil, nil, err
+	}
+	return address, tx, &FeralfileToken{FeralfileTokenCaller: FeralfileTokenCaller{contract: contract}, FeralfileTokenTransactor: FeralfileTokenTransactor{contract: contract}, FeralfileTokenFilterer: FeralfileTokenFilterer{contract: contract}}, nil
+}
+
+// FeralfileToken is an auto generated Go binding around an Ethereum contract.
+type FeralfileToken struct {
+	FeralfileTokenCaller     // Read-only binding to the contract
+	FeralfileTokenTransactor // Write-only binding to the contract
+	FeralfileTokenFilterer   // Log filterer for contract events
+}
+
+// FeralfileTokenCaller is an auto generated read-only Go binding around an Ethereum contract.
+type FeralfileTokenCaller struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FeralfileTokenTransactor is an auto generated write-only Go binding around an Ethereum contract.
+type FeralfileTokenTransactor struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FeralfileTokenFilterer is an auto generated log filtering Go binding around an Ethereum contract events.
+type FeralfileTokenFilterer struct {
+	contract *bind.BoundContract // Generic contract wrapper for the low level calls
+}
+
+// FeralfileTokenSession is an auto generated Go binding around an Ethereum contract,
+// with pre-set call and transact options.
+type FeralfileTokenSession struct {
+	Contract     *FeralfileToken   // Generic contract binding to set the session for
+	CallOpts     bind.CallOpts     // Call options to use throughout this session
+	TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
+}
+
+// FeralfileTokenCallerSession is an auto generated read-only Go binding around an Ethereum contract,
+// with pre-set call options.
+type FeralfileTokenCallerSession struct {
+	Contract *FeralfileTokenCaller // Generic contract caller binding to set the session for
+	CallOpts bind.CallOpts         // Call options to use throughout this session
+}
+
+// FeralfileTokenTransactorSession is an auto generated write-only Go binding around an Ethereum contract,
+// with pre-set transact options.
+type FeralfileTokenTransactorSession struct {
+	Contract     *FeralfileTokenTransactor // Generic contract transactor binding to set the session for
+	TransactOpts bind.TransactOpts         // Transaction auth options to use throughout this session
+}
+
+// FeralfileTokenRaw is an auto generated low-level Go binding around an Ethereum contract.
+type FeralfileTokenRaw struct {
+	Contract *FeralfileToken // Generic contract binding to access the raw methods on
+}
+
+// FeralfileTokenCallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
+type FeralfileTokenCallerRaw struct {
+	Contract *FeralfileTokenCaller // Generic read-only contract binding to access the raw methods on
+}
+
+// FeralfileTokenTransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
+type FeralfileTokenTransactorRaw struct {
+	Contract *FeralfileTokenTransactor // Generic write-only contract binding to access the raw methods on
+}
+
+// NewFeralfileToken creates a new instance of FeralfileToken, bound to a specific deployed contract.
+func NewFeralfileToken(address common.Address, backend bind.ContractBackend) (*FeralfileToken, error) {
+	contract, err := bindFeralfileToken(address, backend, backend, backend)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileToken{FeralfileTokenCaller: FeralfileTokenCaller{contract: contract}, FeralfileTokenTransactor: FeralfileTokenTransactor{contract: contract}, FeralfileTokenFilterer: FeralfileTokenFilterer{contract: contract}}, nil
+}
+
+// NewFeralfileTokenCaller creates a new read-only instance of FeralfileToken, bound to a specific deployed contract.
+func NewFeralfileTokenCaller(address common.Address, caller bind.ContractCaller) (*FeralfileTokenCaller, error) {
+	contract, err := bindFeralfileToken(address, caller, nil, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileTokenCaller{contract: contract}, nil
+}
+
+// NewFeralfileTokenTransactor creates a new write-only instance of FeralfileToken, bound to a specific deployed contract.
+func NewFeralfileTokenTransactor(address common.Address, transactor bind.ContractTransactor) (*FeralfileTokenTransactor, error) {
+	contract, err := bindFeralfileToken(address, nil, transactor, nil)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileTokenTransactor{contract: contract}, nil
+}
+
+// NewFeralfileTokenFilterer creates a new log filterer instance of FeralfileToken, bound to a specific deployed contract.
+func NewFeralfileTokenFilterer(address common.Address, filterer bind.ContractFilterer) (*FeralfileTokenFilterer, error) {
+	contract, err := bindFeralfileToken(address, nil, nil, filterer)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileTokenFilterer{contract: contract}, nil
+}
+
+// bindFeralfileToken binds a generic wrapper to an already deployed contract.
+func bindFeralfileToken(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
+	parsed, err := FeralfileTokenMetaData.GetAbi()
+	if err != nil {
+		return nil, err
+	}
+	return bind.NewBoundContract(address, *parsed, caller, transactor, filterer), nil
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_FeralfileToken *FeralfileTokenRaw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error {
+	return _FeralfileToken.Contract.FeralfileTokenCaller.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_FeralfileToken *FeralfileTokenRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.FeralfileTokenTransactor.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_FeralfileToken *FeralfileTokenRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.FeralfileTokenTransactor.contract.Transact(opts, method, params...)
+}
+
+// Call invokes the (constant) contract method with params as input values and
+// sets the output to result. The result type might be a single field for simple
+// returns, a slice of interfaces for anonymous returns and a struct for named
+// returns.
+func (_FeralfileToken *FeralfileTokenCallerRaw) Call(opts *bind.CallOpts, result *[]interface{}, method string, params ...interface{}) error {
+	return _FeralfileToken.Contract.contract.Call(opts, result, method, params...)
+}
+
+// Transfer initiates a plain transaction to move funds to the contract, calling
+// its default method if one is available.
+func (_FeralfileToken *FeralfileTokenTransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.contract.Transfer(opts)
+}
+
+// Transact invokes the (paid) contract method with params as input values.
+func (_FeralfileToken *FeralfileTokenTransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.contract.Transact(opts, method, params...)
+}
+
+// Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.
+//
+// Solidity: function allowance(address owner, address spender) view returns(uint256)
+func (_FeralfileToken *FeralfileTokenCaller) Allowance(opts *bind.CallOpts, owner common.Address, spender common.Address) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileToken.contract.Call(opts, &out, "allowance", owner, spender)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.
+//
+// Solidity: function allowance(address owner, address spender) view returns(uint256)
+func (_FeralfileToken *FeralfileTokenSession) Allowance(owner common.Address, spender common.Address) (*big.Int, error) {
+	return _FeralfileToken.Contract.Allowance(&_FeralfileToken.CallOpts, owner, spender)
+}
+
+// Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.
+//
+// Solidity: function allowance(address owner, address spender) view returns(uint256)
+func (_FeralfileToken *FeralfileTokenCallerSession) Allowance(owner common.Address, spender common.Address) (*big.Int, error) {
+	return _FeralfileToken.Contract.Allowance(&_FeralfileToken.CallOpts, owner, spender)
+}
+
+// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
+//
+// Solidity: function balanceOf(address account) view returns(uint256)
+func (_FeralfileToken *FeralfileTokenCaller) BalanceOf(opts *bind.CallOpts, account common.Address) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileToken.contract.Call(opts, &out, "balanceOf", account)
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
+//
+// Solidity: function balanceOf(address account) view returns(uint256)
+func (_FeralfileToken *FeralfileTokenSession) BalanceOf(account common.Address) (*big.Int, error) {
+	return _FeralfileToken.Contract.BalanceOf(&_FeralfileToken.CallOpts, account)
+}
+
+// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
+//
+// Solidity: function balanceOf(address account) view returns(uint256)
+func (_FeralfileToken *FeralfileTokenCallerSession) BalanceOf(account common.Address) (*big.Int, error) {
+	return _FeralfileToken.Contract.BalanceOf(&_FeralfileToken.CallOpts, account)
+}
+
+// Decimals is a free data retrieval call binding the contract method 0x313ce567.
+//
+// Solidity: function decimals() view returns(uint8)
+func (_FeralfileToken *FeralfileTokenCaller) Decimals(opts *bind.CallOpts) (uint8, error) {
+	var out []interface{}
+	err := _FeralfileToken.contract.Call(opts, &out, "decimals")
+
+	if err != nil {
+		return *new(uint8), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(uint8)).(*uint8)
+
+	return out0, err
+
+}
+
+// Decimals is a free data retrieval call binding the contract method 0x313ce567.
+//
+// Solidity: function decimals() view returns(uint8)
+func (_FeralfileToken *FeralfileTokenSession) Decimals() (uint8, error) {
+	return _FeralfileToken.Contract.Decimals(&_FeralfileToken.CallOpts)
+}
+
+// Decimals is a free data retrieval call binding the contract method 0x313ce567.
+//
+// Solidity: function decimals() view returns(uint8)
+func (_FeralfileToken *FeralfileTokenCallerSession) Decimals() (uint8, error) {
+	return _FeralfileToken.Contract.Decimals(&_FeralfileToken.CallOpts)
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_FeralfileToken *FeralfileTokenCaller) Name(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileToken.contract.Call(opts, &out, "name")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_FeralfileToken *FeralfileTokenSession) Name() (string, error) {
+	return _FeralfileToken.Contract.Name(&_FeralfileToken.CallOpts)
+}
+
+// Name is a free data retrieval call binding the contract method 0x06fdde03.
+//
+// Solidity: function name() view returns(string)
+func (_FeralfileToken *FeralfileTokenCallerSession) Name() (string, error) {
+	return _FeralfileToken.Contract.Name(&_FeralfileToken.CallOpts)
+}
+
+// Owner is a free data retrieval call binding the contract method 0x8da5cb5b.
+//
+// Solidity: function owner() view returns(address)
+func (_FeralfileToken *FeralfileTokenCaller) Owner(opts *bind.CallOpts) (common.Address, error) {
+	var out []interface{}
+	err := _FeralfileToken.contract.Call(opts, &out, "owner")
+
+	if err != nil {
+		return *new(common.Address), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
+
+	return out0, err
+
+}
+
+// Owner is a free data retrieval call binding the contract method 0x8da5cb5b.
+//
+// Solidity: function owner() view returns(address)
+func (_FeralfileToken *FeralfileTokenSession) Owner() (common.Address, error) {
+	return _FeralfileToken.Contract.Owner(&_FeralfileToken.CallOpts)
+}
+
+// Owner is a free data retrieval call binding the contract method 0x8da5cb5b.
+//
+// Solidity: function owner() view returns(address)
+func (_FeralfileToken *FeralfileTokenCallerSession) Owner() (common.Address, error) {
+	return _FeralfileToken.Contract.Owner(&_FeralfileToken.CallOpts)
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_FeralfileToken *FeralfileTokenCaller) Symbol(opts *bind.CallOpts) (string, error) {
+	var out []interface{}
+	err := _FeralfileToken.contract.Call(opts, &out, "symbol")
+
+	if err != nil {
+		return *new(string), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(string)).(*string)
+
+	return out0, err
+
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_FeralfileToken *FeralfileTokenSession) Symbol() (string, error) {
+	return _FeralfileToken.Contract.Symbol(&_FeralfileToken.CallOpts)
+}
+
+// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
+//
+// Solidity: function symbol() view returns(string)
+func (_FeralfileToken *FeralfileTokenCallerSession) Symbol() (string, error) {
+	return _FeralfileToken.Contract.Symbol(&_FeralfileToken.CallOpts)
+}
+
+// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
+//
+// Solidity: function totalSupply() view returns(uint256)
+func (_FeralfileToken *FeralfileTokenCaller) TotalSupply(opts *bind.CallOpts) (*big.Int, error) {
+	var out []interface{}
+	err := _FeralfileToken.contract.Call(opts, &out, "totalSupply")
+
+	if err != nil {
+		return *new(*big.Int), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(*big.Int)).(**big.Int)
+
+	return out0, err
+
+}
+
+// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
+//
+// Solidity: function totalSupply() view returns(uint256)
+func (_FeralfileToken *FeralfileTokenSession) TotalSupply() (*big.Int, error) {
+	return _FeralfileToken.Contract.TotalSupply(&_FeralfileToken.CallOpts)
+}
+
+// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
+//
+// Solidity: function totalSupply() view returns(uint256)
+func (_FeralfileToken *FeralfileTokenCallerSession) TotalSupply() (*big.Int, error) {
+	return _FeralfileToken.Contract.TotalSupply(&_FeralfileToken.CallOpts)
+}
+
+// Trustees is a free data retrieval call binding the contract method 0xeee608a4.
+//
+// Solidity: function trustees(address ) view returns(bool)
+func (_FeralfileToken *FeralfileTokenCaller) Trustees(opts *bind.CallOpts, arg0 common.Address) (bool, error) {
+	var out []interface{}
+	err := _FeralfileToken.contract.Call(opts, &out, "trustees", arg0)
+
+	if err != nil {
+		return *new(bool), err
+	}
+
+	out0 := *abi.ConvertType(out[0], new(bool)).(*bool)
+
+	return out0, err
+
+}
+
+// Trustees is a free data retrieval call binding the contract method 0xeee608a4.
+//
+// Solidity: function trustees(address ) view returns(bool)
+func (_FeralfileToken *FeralfileTokenSession) Trustees(arg0 common.Address) (bool, error) {
+	return _FeralfileToken.Contract.Trustees(&_FeralfileToken.CallOpts, arg0)
+}
+
+// Trustees is a free data retrieval call binding the contract method 0xeee608a4.
+//
+// Solidity: function trustees(address ) view returns(bool)
+func (_FeralfileToken *FeralfileTokenCallerSession) Trustees(arg0 common.Address) (bool, error) {
+	return _FeralfileToken.Contract.Trustees(&_FeralfileToken.CallOpts, arg0)
+}
+
+// AddTrustee is a paid mutator transaction binding the contract method 0xdc78ac1c.
+//
+// Solidity: function addTrustee(address _trustee) returns()
+func (_FeralfileToken *FeralfileTokenTransactor) AddTrustee(opts *bind.TransactOpts, _trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "addTrustee", _trustee)
+}
+
+// AddTrustee is a paid mutator transaction binding the contract method 0xdc78ac1c.
+//
+// Solidity: function addTrustee(address _trustee) returns()
+func (_FeralfileToken *FeralfileTokenSession) AddTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.AddTrustee(&_FeralfileToken.TransactOpts, _trustee)
+}
+
+// AddTrustee is a paid mutator transaction binding the contract method 0xdc78ac1c.
+//
+// Solidity: function addTrustee(address _trustee) returns()
+func (_FeralfileToken *FeralfileTokenTransactorSession) AddTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.AddTrustee(&_FeralfileToken.TransactOpts, _trustee)
+}
+
+// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
+//
+// Solidity: function approve(address spender, uint256 amount) returns(bool)
+func (_FeralfileToken *FeralfileTokenTransactor) Approve(opts *bind.TransactOpts, spender common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "approve", spender, amount)
+}
+
+// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
+//
+// Solidity: function approve(address spender, uint256 amount) returns(bool)
+func (_FeralfileToken *FeralfileTokenSession) Approve(spender common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.Approve(&_FeralfileToken.TransactOpts, spender, amount)
+}
+
+// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
+//
+// Solidity: function approve(address spender, uint256 amount) returns(bool)
+func (_FeralfileToken *FeralfileTokenTransactorSession) Approve(spender common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.Approve(&_FeralfileToken.TransactOpts, spender, amount)
+}
+
+// BatchMint is a paid mutator transaction binding the contract method 0x68573107.
+//
+// Solidity: function batchMint(address[] owners, uint256[] amounts) returns()
+func (_FeralfileToken *FeralfileTokenTransactor) BatchMint(opts *bind.TransactOpts, owners []common.Address, amounts []*big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "batchMint", owners, amounts)
+}
+
+// BatchMint is a paid mutator transaction binding the contract method 0x68573107.
+//
+// Solidity: function batchMint(address[] owners, uint256[] amounts) returns()
+func (_FeralfileToken *FeralfileTokenSession) BatchMint(owners []common.Address, amounts []*big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.BatchMint(&_FeralfileToken.TransactOpts, owners, amounts)
+}
+
+// BatchMint is a paid mutator transaction binding the contract method 0x68573107.
+//
+// Solidity: function batchMint(address[] owners, uint256[] amounts) returns()
+func (_FeralfileToken *FeralfileTokenTransactorSession) BatchMint(owners []common.Address, amounts []*big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.BatchMint(&_FeralfileToken.TransactOpts, owners, amounts)
+}
+
+// DecreaseAllowance is a paid mutator transaction binding the contract method 0xa457c2d7.
+//
+// Solidity: function decreaseAllowance(address spender, uint256 subtractedValue) returns(bool)
+func (_FeralfileToken *FeralfileTokenTransactor) DecreaseAllowance(opts *bind.TransactOpts, spender common.Address, subtractedValue *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "decreaseAllowance", spender, subtractedValue)
+}
+
+// DecreaseAllowance is a paid mutator transaction binding the contract method 0xa457c2d7.
+//
+// Solidity: function decreaseAllowance(address spender, uint256 subtractedValue) returns(bool)
+func (_FeralfileToken *FeralfileTokenSession) DecreaseAllowance(spender common.Address, subtractedValue *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.DecreaseAllowance(&_FeralfileToken.TransactOpts, spender, subtractedValue)
+}
+
+// DecreaseAllowance is a paid mutator transaction binding the contract method 0xa457c2d7.
+//
+// Solidity: function decreaseAllowance(address spender, uint256 subtractedValue) returns(bool)
+func (_FeralfileToken *FeralfileTokenTransactorSession) DecreaseAllowance(spender common.Address, subtractedValue *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.DecreaseAllowance(&_FeralfileToken.TransactOpts, spender, subtractedValue)
+}
+
+// IncreaseAllowance is a paid mutator transaction binding the contract method 0x39509351.
+//
+// Solidity: function increaseAllowance(address spender, uint256 addedValue) returns(bool)
+func (_FeralfileToken *FeralfileTokenTransactor) IncreaseAllowance(opts *bind.TransactOpts, spender common.Address, addedValue *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "increaseAllowance", spender, addedValue)
+}
+
+// IncreaseAllowance is a paid mutator transaction binding the contract method 0x39509351.
+//
+// Solidity: function increaseAllowance(address spender, uint256 addedValue) returns(bool)
+func (_FeralfileToken *FeralfileTokenSession) IncreaseAllowance(spender common.Address, addedValue *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.IncreaseAllowance(&_FeralfileToken.TransactOpts, spender, addedValue)
+}
+
+// IncreaseAllowance is a paid mutator transaction binding the contract method 0x39509351.
+//
+// Solidity: function increaseAllowance(address spender, uint256 addedValue) returns(bool)
+func (_FeralfileToken *FeralfileTokenTransactorSession) IncreaseAllowance(spender common.Address, addedValue *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.IncreaseAllowance(&_FeralfileToken.TransactOpts, spender, addedValue)
+}
+
+// Mint is a paid mutator transaction binding the contract method 0x40c10f19.
+//
+// Solidity: function mint(address owner, uint256 amount) returns()
+func (_FeralfileToken *FeralfileTokenTransactor) Mint(opts *bind.TransactOpts, owner common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "mint", owner, amount)
+}
+
+// Mint is a paid mutator transaction binding the contract method 0x40c10f19.
+//
+// Solidity: function mint(address owner, uint256 amount) returns()
+func (_FeralfileToken *FeralfileTokenSession) Mint(owner common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.Mint(&_FeralfileToken.TransactOpts, owner, amount)
+}
+
+// Mint is a paid mutator transaction binding the contract method 0x40c10f19.
+//
+// Solidity: function mint(address owner, uint256 amount) returns()
+func (_FeralfileToken *FeralfileTokenTransactorSession) Mint(owner common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.Mint(&_FeralfileToken.TransactOpts, owner, amount)
+}
+
+// RemoveTrustee is a paid mutator transaction binding the contract method 0x03120506.
+//
+// Solidity: function removeTrustee(address _trustee) returns()
+func (_FeralfileToken *FeralfileTokenTransactor) RemoveTrustee(opts *bind.TransactOpts, _trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "removeTrustee", _trustee)
+}
+
+// RemoveTrustee is a paid mutator transaction binding the contract method 0x03120506.
+//
+// Solidity: function removeTrustee(address _trustee) returns()
+func (_FeralfileToken *FeralfileTokenSession) RemoveTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.RemoveTrustee(&_FeralfileToken.TransactOpts, _trustee)
+}
+
+// RemoveTrustee is a paid mutator transaction binding the contract method 0x03120506.
+//
+// Solidity: function removeTrustee(address _trustee) returns()
+func (_FeralfileToken *FeralfileTokenTransactorSession) RemoveTrustee(_trustee common.Address) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.RemoveTrustee(&_FeralfileToken.TransactOpts, _trustee)
+}
+
+// RenounceOwnership is a paid mutator transaction binding the contract method 0x715018a6.
+//
+// Solidity: function renounceOwnership() returns()
+func (_FeralfileToken *FeralfileTokenTransactor) RenounceOwnership(opts *bind.TransactOpts) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "renounceOwnership")
+}
+
+// RenounceOwnership is a paid mutator transaction binding the contract method 0x715018a6.
+//
+// Solidity: function renounceOwnership() returns()
+func (_FeralfileToken *FeralfileTokenSession) RenounceOwnership() (*types.Transaction, error) {
+	return _FeralfileToken.Contract.RenounceOwnership(&_FeralfileToken.TransactOpts)
+}
+
+// RenounceOwnership is a paid mutator transaction binding the contract method 0x715018a6.
+//
+// Solidity: function renounceOwnership() returns()
+func (_FeralfileToken *FeralfileTokenTransactorSession) RenounceOwnership() (*types.Transaction, error) {
+	return _FeralfileToken.Contract.RenounceOwnership(&_FeralfileToken.TransactOpts)
+}
+
+// Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.
+//
+// Solidity: function transfer(address to, uint256 amount) returns(bool)
+func (_FeralfileToken *FeralfileTokenTransactor) Transfer(opts *bind.TransactOpts, to common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "transfer", to, amount)
+}
+
+// Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.
+//
+// Solidity: function transfer(address to, uint256 amount) returns(bool)
+func (_FeralfileToken *FeralfileTokenSession) Transfer(to common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.Transfer(&_FeralfileToken.TransactOpts, to, amount)
+}
+
+// Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.
+//
+// Solidity: function transfer(address to, uint256 amount) returns(bool)
+func (_FeralfileToken *FeralfileTokenTransactorSession) Transfer(to common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.Transfer(&_FeralfileToken.TransactOpts, to, amount)
+}
+
+// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
+//
+// Solidity: function transferFrom(address from, address to, uint256 amount) returns(bool)
+func (_FeralfileToken *FeralfileTokenTransactor) TransferFrom(opts *bind.TransactOpts, from common.Address, to common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "transferFrom", from, to, amount)
+}
+
+// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
+//
+// Solidity: function transferFrom(address from, address to, uint256 amount) returns(bool)
+func (_FeralfileToken *FeralfileTokenSession) TransferFrom(from common.Address, to common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.TransferFrom(&_FeralfileToken.TransactOpts, from, to, amount)
+}
+
+// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
+//
+// Solidity: function transferFrom(address from, address to, uint256 amount) returns(bool)
+func (_FeralfileToken *FeralfileTokenTransactorSession) TransferFrom(from common.Address, to common.Address, amount *big.Int) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.TransferFrom(&_FeralfileToken.TransactOpts, from, to, amount)
+}
+
+// TransferOwnership is a paid mutator transaction binding the contract method 0xf2fde38b.
+//
+// Solidity: function transferOwnership(address newOwner) returns()
+func (_FeralfileToken *FeralfileTokenTransactor) TransferOwnership(opts *bind.TransactOpts, newOwner common.Address) (*types.Transaction, error) {
+	return _FeralfileToken.contract.Transact(opts, "transferOwnership", newOwner)
+}
+
+// TransferOwnership is a paid mutator transaction binding the contract method 0xf2fde38b.
+//
+// Solidity: function transferOwnership(address newOwner) returns()
+func (_FeralfileToken *FeralfileTokenSession) TransferOwnership(newOwner common.Address) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.TransferOwnership(&_FeralfileToken.TransactOpts, newOwner)
+}
+
+// TransferOwnership is a paid mutator transaction binding the contract method 0xf2fde38b.
+//
+// Solidity: function transferOwnership(address newOwner) returns()
+func (_FeralfileToken *FeralfileTokenTransactorSession) TransferOwnership(newOwner common.Address) (*types.Transaction, error) {
+	return _FeralfileToken.Contract.TransferOwnership(&_FeralfileToken.TransactOpts, newOwner)
+}
+
+// FeralfileTokenApprovalIterator is returned from FilterApproval and is used to iterate over the raw logs and unpacked data for Approval events raised by the FeralfileToken contract.
+type FeralfileTokenApprovalIterator struct {
+	Event *FeralfileTokenApproval // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileTokenApprovalIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileTokenApproval)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileTokenApproval)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileTokenApprovalIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileTokenApprovalIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileTokenApproval represents a Approval event raised by the FeralfileToken contract.
+type FeralfileTokenApproval struct {
+	Owner   common.Address
+	Spender common.Address
+	Value   *big.Int
+	Raw     types.Log // Blockchain specific contextual infos
+}
+
+// FilterApproval is a free log retrieval operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
+//
+// Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)
+func (_FeralfileToken *FeralfileTokenFilterer) FilterApproval(opts *bind.FilterOpts, owner []common.Address, spender []common.Address) (*FeralfileTokenApprovalIterator, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var spenderRule []interface{}
+	for _, spenderItem := range spender {
+		spenderRule = append(spenderRule, spenderItem)
+	}
+
+	logs, sub, err := _FeralfileToken.contract.FilterLogs(opts, "Approval", ownerRule, spenderRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileTokenApprovalIterator{contract: _FeralfileToken.contract, event: "Approval", logs: logs, sub: sub}, nil
+}
+
+// WatchApproval is a free log subscription operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
+//
+// Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)
+func (_FeralfileToken *FeralfileTokenFilterer) WatchApproval(opts *bind.WatchOpts, sink chan<- *FeralfileTokenApproval, owner []common.Address, spender []common.Address) (event.Subscription, error) {
+
+	var ownerRule []interface{}
+	for _, ownerItem := range owner {
+		ownerRule = append(ownerRule, ownerItem)
+	}
+	var spenderRule []interface{}
+	for _, spenderItem := range spender {
+		spenderRule = append(spenderRule, spenderItem)
+	}
+
+	logs, sub, err := _FeralfileToken.contract.WatchLogs(opts, "Approval", ownerRule, spenderRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileTokenApproval)
+				if err := _FeralfileToken.contract.UnpackLog(event, "Approval", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseApproval is a log parse operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
+//
+// Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)
+func (_FeralfileToken *FeralfileTokenFilterer) ParseApproval(log types.Log) (*FeralfileTokenApproval, error) {
+	event := new(FeralfileTokenApproval)
+	if err := _FeralfileToken.contract.UnpackLog(event, "Approval", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileTokenOwnershipTransferredIterator is returned from FilterOwnershipTransferred and is used to iterate over the raw logs and unpacked data for OwnershipTransferred events raised by the FeralfileToken contract.
+type FeralfileTokenOwnershipTransferredIterator struct {
+	Event *FeralfileTokenOwnershipTransferred // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileTokenOwnershipTransferredIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileTokenOwnershipTransferred)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileTokenOwnershipTransferred)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileTokenOwnershipTransferredIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileTokenOwnershipTransferredIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileTokenOwnershipTransferred represents a OwnershipTransferred event raised by the FeralfileToken contract.
+type FeralfileTokenOwnershipTransferred struct {
+	PreviousOwner common.Address
+	NewOwner      common.Address
+	Raw           types.Log // Blockchain specific contextual infos
+}
+
+// FilterOwnershipTransferred is a free log retrieval operation binding the contract event 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0.
+//
+// Solidity: event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)
+func (_FeralfileToken *FeralfileTokenFilterer) FilterOwnershipTransferred(opts *bind.FilterOpts, previousOwner []common.Address, newOwner []common.Address) (*FeralfileTokenOwnershipTransferredIterator, error) {
+
+	var previousOwnerRule []interface{}
+	for _, previousOwnerItem := range previousOwner {
+		previousOwnerRule = append(previousOwnerRule, previousOwnerItem)
+	}
+	var newOwnerRule []interface{}
+	for _, newOwnerItem := range newOwner {
+		newOwnerRule = append(newOwnerRule, newOwnerItem)
+	}
+
+	logs, sub, err := _FeralfileToken.contract.FilterLogs(opts, "OwnershipTransferred", previousOwnerRule, newOwnerRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileTokenOwnershipTransferredIterator{contract: _FeralfileToken.contract, event: "OwnershipTransferred", logs: logs, sub: sub}, nil
+}
+
+// WatchOwnershipTransferred is a free log subscription operation binding the contract event 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0.
+//
+// Solidity: event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)
+func (_FeralfileToken *FeralfileTokenFilterer) WatchOwnershipTransferred(opts *bind.WatchOpts, sink chan<- *FeralfileTokenOwnershipTransferred, previousOwner []common.Address, newOwner []common.Address) (event.Subscription, error) {
+
+	var previousOwnerRule []interface{}
+	for _, previousOwnerItem := range previousOwner {
+		previousOwnerRule = append(previousOwnerRule, previousOwnerItem)
+	}
+	var newOwnerRule []interface{}
+	for _, newOwnerItem := range newOwner {
+		newOwnerRule = append(newOwnerRule, newOwnerItem)
+	}
+
+	logs, sub, err := _FeralfileToken.contract.WatchLogs(opts, "OwnershipTransferred", previousOwnerRule, newOwnerRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileTokenOwnershipTransferred)
+				if err := _FeralfileToken.contract.UnpackLog(event, "OwnershipTransferred", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseOwnershipTransferred is a log parse operation binding the contract event 0x8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0.
+//
+// Solidity: event OwnershipTransferred(address indexed previousOwner, address indexed newOwner)
+func (_FeralfileToken *FeralfileTokenFilterer) ParseOwnershipTransferred(log types.Log) (*FeralfileTokenOwnershipTransferred, error) {
+	event := new(FeralfileTokenOwnershipTransferred)
+	if err := _FeralfileToken.contract.UnpackLog(event, "OwnershipTransferred", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
+
+// FeralfileTokenTransferIterator is returned from FilterTransfer and is used to iterate over the raw logs and unpacked data for Transfer events raised by the FeralfileToken contract.
+type FeralfileTokenTransferIterator struct {
+	Event *FeralfileTokenTransfer // Event containing the contract specifics and raw log
+
+	contract *bind.BoundContract // Generic contract to use for unpacking event data
+	event    string              // Event name to use for unpacking event data
+
+	logs chan types.Log        // Log channel receiving the found contract events
+	sub  ethereum.Subscription // Subscription for errors, completion and termination
+	done bool                  // Whether the subscription completed delivering logs
+	fail error                 // Occurred error to stop iteration
+}
+
+// Next advances the iterator to the subsequent event, returning whether there
+// are any more events found. In case of a retrieval or parsing error, false is
+// returned and Error() can be queried for the exact failure.
+func (it *FeralfileTokenTransferIterator) Next() bool {
+	// If the iterator failed, stop iterating
+	if it.fail != nil {
+		return false
+	}
+	// If the iterator completed, deliver directly whatever's available
+	if it.done {
+		select {
+		case log := <-it.logs:
+			it.Event = new(FeralfileTokenTransfer)
+			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+				it.fail = err
+				return false
+			}
+			it.Event.Raw = log
+			return true
+
+		default:
+			return false
+		}
+	}
+	// Iterator still in progress, wait for either a data or an error event
+	select {
+	case log := <-it.logs:
+		it.Event = new(FeralfileTokenTransfer)
+		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
+			it.fail = err
+			return false
+		}
+		it.Event.Raw = log
+		return true
+
+	case err := <-it.sub.Err():
+		it.done = true
+		it.fail = err
+		return it.Next()
+	}
+}
+
+// Error returns any retrieval or parsing error occurred during filtering.
+func (it *FeralfileTokenTransferIterator) Error() error {
+	return it.fail
+}
+
+// Close terminates the iteration process, releasing any pending underlying
+// resources.
+func (it *FeralfileTokenTransferIterator) Close() error {
+	it.sub.Unsubscribe()
+	return nil
+}
+
+// FeralfileTokenTransfer represents a Transfer event raised by the FeralfileToken contract.
+type FeralfileTokenTransfer struct {
+	From  common.Address
+	To    common.Address
+	Value *big.Int
+	Raw   types.Log // Blockchain specific contextual infos
+}
+
+// FilterTransfer is a free log retrieval operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
+//
+// Solidity: event Transfer(address indexed from, address indexed to, uint256 value)
+func (_FeralfileToken *FeralfileTokenFilterer) FilterTransfer(opts *bind.FilterOpts, from []common.Address, to []common.Address) (*FeralfileTokenTransferIterator, error) {
+
+	var fromRule []interface{}
+	for _, fromItem := range from {
+		fromRule = append(fromRule, fromItem)
+	}
+	var toRule []interface{}
+	for _, toItem := range to {
+		toRule = append(toRule, toItem)
+	}
+
+	logs, sub, err := _FeralfileToken.contract.FilterLogs(opts, "Transfer", fromRule, toRule)
+	if err != nil {
+		return nil, err
+	}
+	return &FeralfileTokenTransferIterator{contract: _FeralfileToken.contract, event: "Transfer", logs: logs, sub: sub}, nil
+}
+
+// WatchTransfer is a free log subscription operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
+//
+// Solidity: event Transfer(address indexed from, address indexed to, uint256 value)
+func (_FeralfileToken *FeralfileTokenFilterer) WatchTransfer(opts *bind.WatchOpts, sink chan<- *FeralfileTokenTransfer, from []common.Address, to []common.Address) (event.Subscription, error) {
+
+	var fromRule []interface{}
+	for _, fromItem := range from {
+		fromRule = append(fromRule, fromItem)
+	}
+	var toRule []interface{}
+	for _, toItem := range to {
+		toRule = append(toRule, toItem)
+	}
+
+	logs, sub, err := _FeralfileToken.contract.WatchLogs(opts, "Transfer", fromRule, toRule)
+	if err != nil {
+		return nil, err
+	}
+	return event.NewSubscription(func(quit <-chan struct{}) error {
+		defer sub.Unsubscribe()
+		for {
+			select {
+			case log := <-logs:
+				// New log arrived, parse the event and forward to the user
+				event := new(FeralfileTokenTransfer)
+				if err := _FeralfileToken.contract.UnpackLog(event, "Transfer", log); err != nil {
+					return err
+				}
+				event.Raw = log
+
+				select {
+				case sink <- event:
+				case err := <-sub.Err():
+					return err
+				case <-quit:
+					return nil
+				}
+			case err := <-sub.Err():
+				return err
+			case <-quit:
+				return nil
+			}
+		}
+	}), nil
+}
+
+// ParseTransfer is a log parse operation binding the contract event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef.
+//
+// Solidity: event Transfer(address indexed from, address indexed to, uint256 value)
+func (_FeralfileToken *FeralfileTokenFilterer) ParseTransfer(log types.Log) (*FeralfileTokenTransfer, error) {
+	event := new(FeralfileTokenTransfer)
+	if err := _FeralfileToken.contract.UnpackLog(event, "Transfer", log); err != nil {
+		return nil, err
+	}
+	event.Raw = log
+	return event, nil
+}
diff --git a/test/feralfile_exhibition_v4_2.js b/test/feralfile_exhibition_v4_2.js
new file mode 100644
index 0000000..0ea026d
--- /dev/null
+++ b/test/feralfile_exhibition_v4_2.js
@@ -0,0 +1,1226 @@
+const FeralfileExhibitionV4_2 = artifacts.require("FeralfileExhibitionV4_2");
+const FeralfileVault = artifacts.require("FeralfileVault");
+const FeralfileToken = artifacts.require("FeralfileToken");
+
+const ZERO_ADDRESS = "0x0000000000000000000000000000000000000000";
+const COST_RECEIVER = "0x46f2B641d8702f29c45f6D06292dC34Eb9dB1801";
+const VAULT_ADDRESS = "0x7a15b36cb834aea88553de69077d3777460d73ac";
+const CONTRACT_URI = "ipfs://QmQPeNsJPyVWPFDVHb77w8G42Fvo15z4bG2X8D2GhfbSXc";
+
+contract("FeralfileExhibitionV4_2", async (accounts) => {
+    before(async function () {
+        this.signer = accounts[0];
+        this.vault = await FeralfileVault.new(this.signer);
+        this.token = await FeralfileToken.new("Feralfile Token", "FFT");
+        this.seriesIds = [0, 1, 2, 3, 4];
+        this.seriesMaxSupply = [1, 1, 100, 1000, 10000];
+
+        // Deploy multiple contracts
+        this.contracts = [];
+        for (let i = 0; i < 12; i++) {
+            let contract = await FeralfileExhibitionV4_2.new(
+                "Feral File V4 Test",
+                "FFv4",
+                true,
+                true,
+                this.signer,
+                this.vault.address,
+                COST_RECEIVER,
+                CONTRACT_URI,
+                this.seriesIds,
+                this.seriesMaxSupply,
+                this.token.address
+            );
+            await this.token.addTrustee(contract.address);
+            this.contracts.push(contract);
+        }
+    });
+
+    it("test contract constructor", async function () {
+        const contract = this.contracts[0];
+
+        const burnable = await contract.burnable();
+        assert.ok(burnable);
+
+        const bridgeable = await contract.bridgeable();
+        assert.ok(bridgeable);
+
+        const mintable = await contract.mintable();
+        assert.ok(mintable);
+
+        const vaultAddress = await contract.vault();
+        assert.equal(vaultAddress, this.vault.address);
+
+        const signer = await contract.signer();
+        assert.equal(signer, signer);
+
+        const seriesMaxSupply1 = await contract.seriesMaxSupply(
+            this.seriesIds[0]
+        );
+        assert.equal(seriesMaxSupply1, this.seriesMaxSupply[0]);
+
+        const seriesMaxSupply2 = await contract.seriesMaxSupply(
+            this.seriesIds[1]
+        );
+        assert.equal(seriesMaxSupply2, this.seriesMaxSupply[1]);
+
+        const seriesTotalSupply1 = await contract.seriesTotalSupply(
+            this.seriesIds[0]
+        );
+        assert.equal(seriesTotalSupply1, 0);
+    });
+
+    it("test duplicate series in constructor", async function () {
+        // Deploy contract with duplicate series defined
+        let seriesIds = [0, 1, 2, 3, 1];
+        let seriesMaxSupply = [1, 1, 100, 1000, 10000];
+        try {
+            await FeralfileExhibitionV4_2.new(
+                "Feral File V4 Test",
+                "FFv4",
+                true,
+                true,
+                this.signer,
+                this.vault.address,
+                COST_RECEIVER,
+                CONTRACT_URI,
+                seriesIds,
+                seriesMaxSupply,
+                this.token.address
+            );
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: duplicate seriesId"
+                )
+            );
+        }
+    });
+
+    it("test mint artwork", async function () {
+        const contract = this.contracts[0];
+
+        // 1. mint successful
+        const owner = accounts[1];
+        const tokenId1 = this.seriesIds[3] * 1000000 + 0;
+        const tokenId2 = this.seriesIds[4] * 1000000 + 0;
+        let data = [
+            [this.seriesIds[2], tokenId1, owner],
+            [this.seriesIds[3], tokenId2, owner],
+        ];
+        const tx = await contract.mintArtworks(data);
+
+        // total supply
+        const totalSupply = await contract.totalSupply();
+        assert.equal(totalSupply, 2);
+
+        // series total supply
+        const totalSupply1 = await contract.seriesTotalSupply(
+            this.seriesIds[2]
+        );
+        const totalSupply2 = await contract.seriesTotalSupply(
+            this.seriesIds[3]
+        );
+        assert.equal(totalSupply1, 1);
+        assert.equal(totalSupply2, 1);
+
+        // owner
+        const tokenOwner = await contract.ownerOf(tokenId1);
+        assert.equal(tokenOwner, owner);
+
+        // balance
+        const balance = await contract.balanceOf(owner);
+        assert.equal(balance, 2);
+
+        // get artwork
+        const artwork = await contract.getArtwork(tokenId1);
+        assert.equal(artwork.tokenId, tokenId1);
+        assert.equal(artwork.seriesId, this.seriesIds[2]);
+
+        // get token ID from owner
+        const tokenIds = await contract.tokensOfOwner(owner);
+        assert.equal(tokenIds.length, 2);
+        assert.equal(tokenIds[0], tokenId1);
+        assert.equal(tokenIds[1], tokenId2);
+
+        // get token ID from owner & index
+        const tokenId = await contract.tokenOfOwnerByIndex(owner, 0);
+        assert.equal(tokenId, tokenId1);
+
+        // event emitted
+        const { logs } = tx;
+        assert.ok(Array.isArray(logs));
+        assert.equal(logs.length, 4);
+
+        const log0 = logs[0];
+        const log1 = logs[1];
+        assert.equal(log0.event, "Transfer");
+        assert.equal(log1.event, "NewArtwork");
+
+        // 2. mint failed
+        // series doesn't exist
+        data = [[999999, 0, owner]];
+        try {
+            await contract.mintArtworks(data);
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: seriesId doesn't exist: 999999"
+                )
+            );
+        }
+
+        // mint to zero address
+        data = [[this.seriesIds[3], 999999, ZERO_ADDRESS]];
+        try {
+            await contract.mintArtworks(data);
+        } catch (error) {
+            assert.ok(
+                error.message.includes("ERC721: mint to the zero address")
+            );
+        }
+
+        // token already minted
+        data = [[this.seriesIds[3], tokenId1, accounts[2]]];
+        try {
+            await contract.mintArtworks(data);
+        } catch (error) {
+            assert.ok(error.message.includes("ERC721: token already minted"));
+        }
+
+        // no more slots
+        data = [[this.seriesIds[2], 999999, accounts[2]]];
+        try {
+            await contract.mintArtworks(data);
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: no slots available"
+                )
+            );
+        }
+    });
+
+    it("test burn artwork", async function () {
+        const contract = this.contracts[1];
+
+        // 1. Prepare data
+        const owner = accounts[1];
+        const tokenId1 = this.seriesIds[0] * 1000000 + 0;
+        const tokenId2 = this.seriesIds[1] * 1000000 + 0;
+        const tokenId3 = this.seriesIds[2] * 1000000 + 0;
+        let mintData = [
+            [this.seriesIds[0], tokenId1, owner],
+            [this.seriesIds[1], tokenId2, owner],
+            [this.seriesIds[2], tokenId3, owner],
+        ];
+        let tx = await contract.mintArtworks(mintData);
+
+        // 2. Burn successfully
+        let burnData = [tokenId1, tokenId2];
+        tx = await contract.burnArtworks(burnData, { from: owner });
+
+        // total supply
+        const totalSupply = await contract.totalSupply();
+        assert.equal(totalSupply, 1);
+
+        // series total supply
+        const totalSupply1 = await contract.seriesTotalSupply(
+            this.seriesIds[0]
+        );
+        const totalSupply2 = await contract.seriesTotalSupply(
+            this.seriesIds[1]
+        );
+        assert.equal(totalSupply1, 0);
+        assert.equal(totalSupply2, 0);
+
+        // balance
+        const balance = await contract.balanceOf(owner);
+        assert.equal(balance, 1);
+
+        // token of owner
+        const tokenIds = await contract.tokensOfOwner(owner);
+        assert.equal(tokenIds.length, 1);
+
+        // get artwork
+        try {
+            await contract.getArtwork(tokenId1);
+        } catch (error) {
+            assert.ok(error.message.includes("ERC721: invalid token ID"));
+        }
+
+        // event emitted
+        const { logs } = tx;
+        assert.ok(Array.isArray(logs));
+        assert.equal(logs.length, 4);
+
+        const log1 = logs[0];
+        const log2 = logs[1];
+        assert.equal(log1.event, "Transfer");
+        assert.equal(log2.event, "BurnArtwork");
+
+        // 3. Burn failed
+
+        // token doesn't exist
+        try {
+            await contract.burnArtworks([111111, 222222]);
+        } catch (error) {
+            assert.ok(error.message.includes("ERC721: invalid token ID"));
+        }
+
+        // Wrong owner or approval
+        const wrongOwner = accounts[5];
+        try {
+            await contract.burnArtworks([tokenId3], {
+                from: wrongOwner,
+            });
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "ERC721: caller is not token owner or approved"
+                )
+            );
+        }
+    });
+
+    it("test buy artworks successfully", async function () {
+        let contract = this.contracts[2];
+
+        // Mint for buy by crypto
+        let owner = contract.address;
+        await contract.mintArtworks([
+            [this.seriesIds[3], 3000000, owner],
+            [this.seriesIds[3], 3000001, owner],
+            [this.seriesIds[4], 4000000, owner],
+            [this.seriesIds[4], 4000001, owner],
+            [this.seriesIds[4], 4000002, owner],
+        ]);
+
+        // Generate signature
+        const expiryTime = (new Date().getTime() / 1000 + 300).toFixed(0);
+        const signParams = web3.eth.abi.encodeParameters(
+            [
+                "uint",
+                "address",
+                "tuple(uint256,uint256,uint256,address,uint256[],tuple(address,uint256)[][],bool)",
+            ],
+            [
+                BigInt(await web3.eth.getChainId()).toString(),
+                contract.address,
+                [
+                    BigInt(0.25 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000000, 3000001, 4000000, 4000001, 4000002],
+                    [
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                    ],
+                    false,
+                ],
+            ]
+        );
+        const hash = web3.utils.keccak256(signParams);
+        var sig = await web3.eth.sign(hash, this.signer);
+        sig = sig.substr(2);
+        const r = "0x" + sig.slice(0, 64);
+        const s = "0x" + sig.slice(64, 128);
+        const v = "0x" + sig.slice(128, 130);
+        // Generate signature
+
+        try {
+            const acc3BalanceBefore = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceBefore = await web3.eth.getBalance(accounts[4]);
+            const accCostReceiverBalanceBefore = await web3.eth.getBalance(
+                COST_RECEIVER
+            );
+
+            await contract.startSale();
+            await contract.buyArtworks(
+                r,
+                s,
+                web3.utils.toDecimal(v) + 27, // magic 27
+                [
+                    BigInt(0.25 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000000, 3000001, 4000000, 4000001, 4000002],
+                    [
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                    ],
+                    false,
+                ],
+                { from: accounts[5], value: 0.25 * 1e18 }
+            );
+            const ownerOfToken0 = await contract.ownerOf(3000000);
+            const ownerOfToken1 = await contract.ownerOf(3000001);
+            const ownerOfToken2 = await contract.ownerOf(4000000);
+            const ownerOfToken3 = await contract.ownerOf(4000001);
+            const ownerOfToken4 = await contract.ownerOf(4000002);
+            assert.equal(ownerOfToken0, accounts[2]);
+            assert.equal(ownerOfToken1, accounts[2]);
+            assert.equal(ownerOfToken2, accounts[2]);
+            assert.equal(ownerOfToken3, accounts[2]);
+            assert.equal(ownerOfToken4, accounts[2]);
+
+            const acc3BalanceAfter = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceAfter = await web3.eth.getBalance(accounts[4]);
+            const accCostReceiverBalanceAfter = await web3.eth.getBalance(
+                COST_RECEIVER
+            );
+
+            assert.equal(
+                (
+                    BigInt(acc3BalanceAfter) - BigInt(acc3BalanceBefore)
+                ).toString(),
+                BigInt((0.23 * 1e18 * 80) / 100).toString()
+            );
+            assert.equal(
+                (
+                    BigInt(acc4BalanceAfter) - BigInt(acc4BalanceBefore)
+                ).toString(),
+                BigInt((0.23 * 1e18 * 20) / 100).toString()
+            );
+            assert.equal(
+                (
+                    BigInt(accCostReceiverBalanceAfter) -
+                    BigInt(accCostReceiverBalanceBefore)
+                ).toString(),
+                BigInt(0.02 * 1e18).toString()
+            );
+        } catch (err) {
+            console.log(err);
+            assert.fail();
+        }
+    });
+
+    it("test buy artworks successfully with vault contract", async function () {
+        let contract = this.contracts[3];
+
+        // Mint for credit card
+        let owner = contract.address;
+        await contract.mintArtworks([
+            [this.seriesIds[3], 3000002, owner],
+            [this.seriesIds[3], 3000003, owner],
+            [this.seriesIds[4], 4000003, owner],
+            [this.seriesIds[4], 4000004, owner],
+        ]);
+
+        await web3.eth.sendTransaction({
+            to: this.vault.address,
+            from: accounts[8],
+            value: BigInt(0.5 * 1e18).toString(),
+        });
+        // Generate signature
+        const expiryTime = (new Date().getTime() / 1000 + 300).toFixed(0);
+        const signParams = web3.eth.abi.encodeParameters(
+            [
+                "uint",
+                "address",
+                "tuple(uint256,uint256,uint256,address,uint256[],tuple(address,uint256)[][],bool)",
+            ],
+            [
+                BigInt(await web3.eth.getChainId()).toString(),
+                contract.address,
+                [
+                    BigInt(0.22 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000002, 3000003, 4000003, 4000004],
+                    [
+                        [
+                            [accounts[3], 5000],
+                            [accounts[4], 5000],
+                        ],
+                        [
+                            [accounts[3], 5000],
+                            [accounts[4], 5000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                    ],
+                    true,
+                ],
+            ]
+        );
+        const hash = web3.utils.keccak256(signParams);
+        var sig = await web3.eth.sign(hash, this.signer);
+        sig = sig.substr(2);
+        const r = "0x" + sig.slice(0, 64);
+        const s = "0x" + sig.slice(64, 128);
+        const v = "0x" + sig.slice(128, 130);
+        // Generate signature
+        try {
+            const acc3BalanceBefore = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceBefore = await web3.eth.getBalance(accounts[4]);
+            const vaultBalanceBefore = await web3.eth.getBalance(
+                this.vault.address
+            );
+            const accCostReceiverBalanceBefore = await web3.eth.getBalance(
+                COST_RECEIVER
+            );
+
+            await contract.startSale();
+            await contract.buyArtworks(
+                r,
+                s,
+                web3.utils.toDecimal(v) + 27, // magic 27
+                [
+                    BigInt(0.22 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000002, 3000003, 4000003, 4000004],
+                    [
+                        [
+                            [accounts[3], 5000],
+                            [accounts[4], 5000],
+                        ],
+                        [
+                            [accounts[3], 5000],
+                            [accounts[4], 5000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                        [
+                            [accounts[3], 8000],
+                            [accounts[4], 2000],
+                        ],
+                    ],
+                    true,
+                ],
+                { from: accounts[5], value: 0 } // itx relay
+            );
+            const ownerOfToken0 = await contract.ownerOf(3000002);
+            const ownerOfToken1 = await contract.ownerOf(3000003);
+            const ownerOfToken2 = await contract.ownerOf(4000003);
+            const ownerOfToken3 = await contract.ownerOf(4000004);
+            assert.equal(ownerOfToken0, accounts[2]);
+            assert.equal(ownerOfToken1, accounts[2]);
+            assert.equal(ownerOfToken2, accounts[2]);
+            assert.equal(ownerOfToken3, accounts[2]);
+
+            const acc3BalanceAfter = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceAfter = await web3.eth.getBalance(accounts[4]);
+            const vaultBalanceAfter = await web3.eth.getBalance(
+                this.vault.address
+            );
+            const accCostReceiverBalanceAfter = await web3.eth.getBalance(
+                COST_RECEIVER
+            );
+
+            assert.equal(
+                (
+                    BigInt(acc3BalanceAfter) - BigInt(acc3BalanceBefore)
+                ).toString(),
+                BigInt(((0.2 / 4) * 2 * 1e18 * 130) / 100).toString()
+            );
+            assert.equal(
+                (
+                    BigInt(acc4BalanceAfter) - BigInt(acc4BalanceBefore)
+                ).toString(),
+                BigInt(((0.2 / 4) * 2 * 1e18 * 70) / 100).toString()
+            );
+            assert.equal(
+                (
+                    BigInt(vaultBalanceBefore) - BigInt(vaultBalanceAfter)
+                ).toString(),
+                BigInt(0.22 * 1e18).toString()
+            );
+            assert.equal(
+                (
+                    BigInt(accCostReceiverBalanceAfter) -
+                    BigInt(accCostReceiverBalanceBefore)
+                ).toString(),
+                BigInt(0.02 * 1e18).toString()
+            );
+        } catch (err) {
+            console.log(err);
+            assert.fail();
+        }
+    });
+
+    it("test buy artworks failed with total bps over 10k", async function () {
+        let contract = this.contracts[7];
+
+        // Mint for buy by crypto
+        let owner = contract.address;
+        await contract.mintArtworks([
+            [this.seriesIds[3], 3000000, owner],
+            [this.seriesIds[3], 3000001, owner],
+            [this.seriesIds[4], 4000000, owner],
+            [this.seriesIds[4], 4000001, owner],
+            [this.seriesIds[4], 4000002, owner],
+        ]);
+
+        // Generate signature
+        const expiryTime = (new Date().getTime() / 1000 + 300).toFixed(0);
+        const signParams = web3.eth.abi.encodeParameters(
+            [
+                "uint",
+                "address",
+                "tuple(uint256,uint256,uint256,address,uint256[],tuple(address,uint256)[][],bool)",
+            ],
+            [
+                BigInt(await web3.eth.getChainId()).toString(),
+                contract.address,
+                [
+                    BigInt(0.25 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000000, 3000001, 4000000, 4000001, 4000002],
+                    [
+                        [
+                            [accounts[3], 8001],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 8001],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 9000],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 9000],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 8500],
+                            [COST_RECEIVER, 2000],
+                        ],
+                    ],
+                    false,
+                ],
+            ]
+        );
+        const hash = web3.utils.keccak256(signParams);
+        var sig = await web3.eth.sign(hash, this.signer);
+        sig = sig.substr(2);
+        const r = "0x" + sig.slice(0, 64);
+        const s = "0x" + sig.slice(64, 128);
+        const v = "0x" + sig.slice(128, 130);
+        // Generate signature
+
+        try {
+            await contract.startSale();
+            await contract.buyArtworks(
+                r,
+                s,
+                web3.utils.toDecimal(v) + 27, // magic 27
+                [
+                    BigInt(0.25 * 1e18).toString(),
+                    BigInt(0.02 * 1e18).toString(),
+                    expiryTime,
+                    accounts[2],
+                    [3000000, 3000001, 4000000, 4000001, 4000002],
+                    [
+                        [
+                            [accounts[3], 8001],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 8001],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 9000],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 9000],
+                            [COST_RECEIVER, 2000],
+                        ],
+                        [
+                            [accounts[3], 8500],
+                            [COST_RECEIVER, 2000],
+                        ],
+                    ],
+                    false,
+                ],
+                { from: accounts[5], value: 0.25 * 1e18 }
+            );
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: total bps over 10,000"
+                )
+            );
+        }
+    });
+
+    it("test start/stop and burn, pause/resume sale", async function () {
+        const contract = this.contracts[4];
+
+        // Resume the sale is not allowed before starting the sale
+        try {
+            await contract.resumeSale();
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: mintable required to be false"
+                )
+            );
+        }
+
+        // Pause the sale is not allowed before starting the sale
+        try {
+            await contract.pauseSale();
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: mintable required to be false"
+                )
+            );
+        }
+
+        // Mint new tokens
+        const owner = contract.address;
+        const tokenIDs = [4000997, 4000998, 4000999];
+        await contract.mintArtworks([
+            [this.seriesIds[4], tokenIDs[0], owner],
+            [this.seriesIds[4], tokenIDs[1], owner],
+            [this.seriesIds[4], tokenIDs[2], owner],
+        ]);
+
+        // Start the sale
+        await contract.startSale();
+
+        // Validate mintable flag to be false
+        const mintable = await contract.mintable();
+        assert.equal(mintable, false);
+
+        // Validate selling flag to be true
+        let selling = await contract.selling();
+        assert.equal(selling, true);
+
+        // Pause and resume the sale
+        try {
+            await contract.pauseSale();
+
+            // Validate selling flag to be false
+            selling = await contract.selling();
+            assert.equal(selling, false);
+
+            await contract.resumeSale();
+
+            // Validate selling flag to be true
+            selling = await contract.selling();
+            assert.equal(selling, true);
+        } catch (error) {
+            console.log(error);
+            assert.fail();
+        }
+
+        // Stop sale and burn remaining tokens
+        try {
+            await contract.stopSaleAndBurn();
+        } catch (error) {
+            console.log(error);
+            assert.fail();
+        }
+
+        // Validate selling flag to be false
+        selling = await contract.selling();
+        assert.equal(selling, false);
+
+        // Validate tokens were burned
+        for (let i = 0; i < tokenIDs.length; i++) {
+            try {
+                await contract.getArtwork(tokenIDs[i]);
+            } catch (error) {
+                assert.ok(error.message.includes("ERC721: invalid token ID"));
+            }
+        }
+
+        // Resume the sale is not allowed since there is no token left for sale
+        try {
+            await contract.resumeSale();
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: No token owned by the contract"
+                )
+            );
+        }
+    });
+
+    it("test start/stop and transfer remaining token", async function () {
+        const contract = this.contracts[5];
+
+        // Mint new tokens
+        const tokenIDs = [3000997, 3000998, 4000998, 4000999];
+        await contract.mintArtworks([
+            [this.seriesIds[3], tokenIDs[0], contract.address],
+            [this.seriesIds[3], tokenIDs[1], contract.address],
+            [this.seriesIds[4], tokenIDs[2], contract.address],
+            [this.seriesIds[4], tokenIDs[3], contract.address],
+        ]);
+
+        // Start the sale
+        await contract.startSale();
+
+        const owner1 = accounts[1];
+        const owner2 = accounts[2];
+
+        // 1. Stop the sale and transfer remaining tokens failed
+        try {
+            await contract.stopSaleAndTransfer(
+                [this.seriesIds[3], this.seriesIds[4]],
+                [owner1]
+            );
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: seriesIds length is different from recipientAddresses"
+                )
+            );
+        }
+
+        try {
+            await contract.stopSaleAndTransfer(
+                [this.seriesIds[1], this.seriesIds[2]],
+                []
+            );
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: seriesIds or recipientAddresses length is zero"
+                )
+            );
+        }
+
+        try {
+            await contract.stopSaleAndTransfer(
+                [this.seriesIds[1], this.seriesIds[2]],
+                [owner1, owner2]
+            );
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: Token for sale balance has to be zero"
+                )
+            );
+        }
+
+        // 2. Stop the sale and transfer remaining token successful
+        try {
+            await contract.stopSaleAndTransfer(
+                [this.seriesIds[3], this.seriesIds[4]],
+                [owner1, owner2]
+            );
+        } catch (error) {
+            assert.fail();
+        }
+
+        // Validate balances
+        const contractBal = await contract.balanceOf(contract.address);
+        assert.equal(contractBal, 0);
+
+        const owner1Bal = await contract.balanceOf(owner1);
+        assert.equal(owner1Bal, 2);
+
+        const owner2Bal = await contract.balanceOf(owner2);
+        assert.equal(owner2Bal, 2);
+    });
+
+    it("test transfer token", async function () {
+        const contract = this.contracts[6];
+
+        // mint tokens
+        const owner1 = accounts[1];
+        const owner2 = accounts[2];
+        const tokenId1 = this.seriesIds[3] * 1000000 + 555;
+        const tokenId2 = this.seriesIds[3] * 1000000 + 556;
+        const tokenId3 = this.seriesIds[4] * 1000000 + 555;
+        const tokenId4 = this.seriesIds[4] * 1000000 + 556;
+        let data = [
+            [this.seriesIds[3], tokenId1, owner1],
+            [this.seriesIds[3], tokenId2, owner1],
+            [this.seriesIds[4], tokenId3, owner2],
+            [this.seriesIds[4], tokenId4, owner2],
+        ];
+
+        try {
+            await contract.mintArtworks(data);
+        } catch (error) {
+            console.log(error);
+            assert.fail();
+        }
+
+        // transfer tokens
+        // 1. Transfer to other address rather than contract
+        try {
+            await contract.transferFrom(owner1, owner2, tokenId1, {
+                from: owner1,
+            });
+        } catch (error) {
+            console.log(error);
+            assert.fail();
+        }
+
+        // Validate new owner of token
+        let owner = await contract.ownerOf(tokenId1);
+        assert.equal(owner, owner2);
+
+        // 2. Transfer to contract address
+        try {
+            await contract.transferFrom(owner2, owner1, tokenId1, {
+                from: owner2,
+            });
+        } catch (error) {
+            assert.ok(
+                error.message.includes(
+                    "FeralfileExhibitionV4: Contract isn't allowed to receive token"
+                )
+            );
+        }
+
+        // 3. Transfer as operator
+        // TODO add later
+
+        // 4. Transfer as approval
+        // TODO add later
+    });
+
+    it("test set advance setting successfully", async function () {
+        const contract = this.contracts[7];
+        const advanceAddresses = [accounts[3], accounts[4]];
+        const advanceAmounts = [
+            web3.utils.toWei("0.3", "ether"),
+            web3.utils.toWei("0.8", "ether"),
+        ];
+
+        // 1. Set advance setting
+        try {
+            await contract.setAdvanceSetting(advanceAddresses, advanceAmounts);
+
+            const advanceAmount0 = await contract.advances(advanceAddresses[0]);
+            assert.equal(advanceAmount0, advanceAmounts[0]);
+            const advanceAmount1 = await contract.advances(advanceAddresses[1]);
+            assert.equal(advanceAmount0, advanceAmounts[1]);
+        } catch (error) {
+            console.log(error);
+            assert.fail();
+        }
+    });
+
+    it("test set advance setting failed because address in use", async function () {
+        const contract = this.contracts[8];
+        const advanceAddresses = [accounts[3], accounts[4]];
+        const advanceAmounts = [
+            web3.utils.toWei("0.3", "ether"),
+            web3.utils.toWei("0.8", "ether"),
+        ];
+
+        // 1. Set advance setting
+        await contract.setAdvanceSetting(advanceAddresses, advanceAmounts);
+
+        const advanceAmount0 = await contract.advances(advanceAddresses[0]);
+        assert.equal(advanceAmount0, advanceAmounts[0]);
+        const advanceAmount1 = await contract.advances(advanceAddresses[1]);
+        assert.equal(advanceAmount1, advanceAmounts[1]);
+
+        const updatedAddresses = [advanceAddresses[0], accounts[5]];
+        const updatedAmounts = [
+            web3.utils.toWei("0.5", "ether"),
+            web3.utils.toWei("1", "ether"),
+        ];
+
+        // 2. Update advance setting
+        try {
+            await contract.setAdvanceSetting(updatedAddresses, updatedAmounts);
+        } catch (error) {
+            console.log(error);
+            assert.equal(error.reason, "Custom error (could not decode)");
+        }
+    });
+
+    it("test replace advance addresses successfully", async function () {
+        const contract = this.contracts[9];
+        const advanceAddresses = [accounts[3], accounts[4]];
+        const advanceAmounts = [
+            web3.utils.toWei("0.3", "ether"),
+            web3.utils.toWei("0.8", "ether"),
+        ];
+
+        // 1. Set advance setting
+        await contract.setAdvanceSetting(advanceAddresses, advanceAmounts);
+
+        const advanceAmount0 = await contract.advances(advanceAddresses[0]);
+        assert.equal(advanceAmount0, advanceAmounts[0]);
+        const advanceAmount1 = await contract.advances(advanceAddresses[1]);
+        assert.equal(advanceAmount1, advanceAmounts[1]);
+
+        const oldAddresses = [advanceAddresses[0]];
+        const newAddresses = [accounts[7]];
+
+        // 2. Replace advance addresses
+        await contract.replaceAdvanceAddresses(oldAddresses, newAddresses);
+
+        const newAdvanceAmount0 = await contract.advances(newAddresses[0]);
+        assert.equal(newAdvanceAmount0, advanceAmounts[0]);
+    });
+
+    it("test advance amount", async function () {
+        const costReceiver = accounts[6];
+        const seriesIds = [0, 1, 2];
+        const seriesMaxSupply = [100, 100, 100];
+        const advanceAddresses = [accounts[3], accounts[4]];
+        const advanceAmounts = [
+            web3.utils.toWei("0.3", "ether"),
+            web3.utils.toWei("0.8", "ether"),
+        ];
+        const contract = await FeralfileExhibitionV4_2.new(
+            "Feral File V4 Test",
+            "FFv4",
+            true,
+            true,
+            this.signer,
+            this.vault.address,
+            costReceiver,
+            CONTRACT_URI,
+            seriesIds,
+            seriesMaxSupply,
+            this.token.address
+        );
+
+        // 0. set advance setting
+        await contract.setAdvanceSetting(advanceAddresses, advanceAmounts);
+
+        // 1. mint artworks
+        const tokenID1 = seriesIds[0] * 1000000 + 0;
+        const tokenID2 = seriesIds[0] * 1000000 + 1;
+        const tokenID3 = seriesIds[1] * 1000000 + 0;
+        const tokenID4 = seriesIds[1] * 1000000 + 1;
+        const data = [
+            [seriesIds[0], tokenID1, contract.address],
+            [seriesIds[0], tokenID2, contract.address],
+            [seriesIds[1], tokenID3, contract.address],
+            [seriesIds[1], tokenID4, contract.address],
+        ];
+        await contract.mintArtworks(data);
+
+        // 2. buy artworks
+        const expiryTime = (new Date().getTime() / 1000 + 300).toFixed(0);
+        const signParams = web3.eth.abi.encodeParameters(
+            [
+                "uint",
+                "address",
+                "tuple(uint256,uint256,uint256,address,uint256[],tuple(address,uint256)[][],bool)",
+            ],
+            [
+                BigInt(await web3.eth.getChainId()).toString(),
+                contract.address,
+                [
+                    web3.utils.toWei("1", "ether"),
+                    "0",
+                    expiryTime,
+                    accounts[2],
+                    [tokenID1, tokenID2, tokenID3, tokenID4],
+                    [
+                        [
+                            [accounts[3], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000], // Curator
+                        ],
+                        [
+                            [accounts[3], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                        [
+                            [accounts[4], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                        [
+                            [accounts[4], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                    ],
+                    false,
+                ],
+            ]
+        );
+        const hash = web3.utils.keccak256(signParams);
+        var sig = await web3.eth.sign(hash, this.signer);
+        sig = sig.substr(2);
+        const r = "0x" + sig.slice(0, 64);
+        const s = "0x" + sig.slice(64, 128);
+        const v = "0x" + sig.slice(128, 130);
+
+        try {
+            const acc3BalanceBefore = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceBefore = await web3.eth.getBalance(accounts[4]);
+            const acc5BalanceBefore = await web3.eth.getBalance(accounts[5]);
+            const accCostReceiverBalanceBefore = await web3.eth.getBalance(
+                costReceiver
+            );
+
+            await contract.startSale();
+            await contract.buyArtworks(
+                r,
+                s,
+                web3.utils.toDecimal(v) + 27, // magic 27
+                [
+                    web3.utils.toWei("1", "ether"),
+                    "0",
+                    expiryTime,
+                    accounts[2],
+                    [tokenID1, tokenID2, tokenID3, tokenID4],
+                    [
+                        [
+                            [accounts[3], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000], // Curator
+                        ],
+                        [
+                            [accounts[3], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                        [
+                            [accounts[4], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                        [
+                            [accounts[4], 7000],
+                            [costReceiver, 2000],
+                            [accounts[5], 1000],
+                        ],
+                    ],
+                    false,
+                ],
+                { from: accounts[2], value: 1 * 1e18 }
+            );
+            const ownerOfToken1 = await contract.ownerOf(tokenID1);
+            const ownerOfToken2 = await contract.ownerOf(tokenID2);
+            const ownerOfToken3 = await contract.ownerOf(tokenID3);
+            const ownerOfToken4 = await contract.ownerOf(tokenID4);
+            assert.equal(ownerOfToken1, accounts[2]);
+            assert.equal(ownerOfToken2, accounts[2]);
+            assert.equal(ownerOfToken3, accounts[2]);
+            assert.equal(ownerOfToken4, accounts[2]);
+
+            const acc3BalanceAfter = await web3.eth.getBalance(accounts[3]);
+            const acc4BalanceAfter = await web3.eth.getBalance(accounts[4]);
+            const acc5BalanceAfter = await web3.eth.getBalance(accounts[5]);
+            const accCostReceiverBalanceAfter = await web3.eth.getBalance(
+                costReceiver
+            );
+
+            // Revenue per item is 1 / 4 = 0.25
+            // Revenues is 0.25 * 2 then deduct advance amount 0.3 => received 0.2 * 70% = 0.14
+            assert.equal(
+                (
+                    BigInt(acc3BalanceAfter) - BigInt(acc3BalanceBefore)
+                ).toString(),
+                web3.utils.toWei("0.14", "ether")
+            );
+            // Revenue is 0.25 * 2 then deduct advance amount 0.8 => received 0
+            assert.equal(
+                (
+                    BigInt(acc4BalanceAfter) - BigInt(acc4BalanceBefore)
+                ).toString(),
+                "0"
+            );
+            // revenue is 10% of price 0.2 * 10% = 0.02
+            assert.equal(
+                (
+                    BigInt(acc5BalanceAfter) - BigInt(acc5BalanceBefore)
+                ).toString(),
+                web3.utils.toWei("0.02", "ether")
+            );
+            // revenue is 20% of price 0.2 = 0.04 and 0.8 advance amount
+            assert.equal(
+                (
+                    BigInt(accCostReceiverBalanceAfter) -
+                    BigInt(accCostReceiverBalanceBefore)
+                ).toString(),
+                web3.utils.toWei("0.84", "ether")
+            );
+        } catch (err) {
+            console.log(err);
+            assert.fail();
+        }
+    });
+
+    it("test update token information successfully", async function () {
+        const contract = this.contracts[10];
+        // Mint new tokens
+        const tokenIDs = [3001000, 3001001];
+        await contract.mintArtworks([
+            [this.seriesIds[3], tokenIDs[0], contract.address],
+            [this.seriesIds[3], tokenIDs[1], contract.address],
+        ]);
+
+        // update token infomation
+        await contract.updateTokenInformation(tokenIDs[0], "thubnail_uri1", "0x68656c6c6f", 10)
+
+        const ownerBal1 = await this.token.balanceOf(contract.address);
+        assert.equal(ownerBal1, 10 * 10**18);
+
+        // update token infomation for another token
+        await contract.updateTokenInformation(tokenIDs[1], "thubnail_uri2", "0x68656c6c6f", 20)
+        const ownerBal2 = await this.token.balanceOf(contract.address);
+        assert.equal(ownerBal2, 30 * 10**18);
+
+        // update 1 token multiple times
+        await contract.updateTokenInformation(tokenIDs[1], "thubnail_uri3", "0x68656c6c6f", 25)
+        const ownerBal3 = await this.token.balanceOf(contract.address);
+        assert.equal(ownerBal3, 35 * 10**18);
+    });
+});
diff --git a/test/feralfile_token.js b/test/feralfile_token.js
new file mode 100644
index 0000000..747930a
--- /dev/null
+++ b/test/feralfile_token.js
@@ -0,0 +1,61 @@
+const FeralfileToken = artifacts.require('FeralfileToken');
+
+contract('FeralfileToken', async (accounts) => {
+    before(async function () {
+        this.contract = await FeralfileToken.new("Feral File Token Test", "FFToken",);
+    });
+
+    it("test contract constructor", async function () {
+        const name = await this.contract.name();
+        assert.equal(name, "Feral File Token Test");
+
+        const symbol = await this.contract.symbol();
+        assert.equal(symbol, "FFToken");
+
+        const totalSupply = await this.contract.totalSupply();
+        assert.equal(totalSupply, 0);
+
+    });
+
+    it("test mint token", async function () {
+        const owner = accounts[1];
+        const amount = 24;
+
+        await this.contract.mint(owner, amount, { from: accounts[0] });
+
+        // total supply
+        const totalSupply = await this.contract.totalSupply();
+        assert.equal(totalSupply, amount);
+
+        // balance
+        const balance = await this.contract.balanceOf(owner);
+        assert.equal(balance, amount);
+    });
+
+    it("test mint tokens for multiple owners", async function () {
+        const owners = [accounts[2], accounts[3], accounts[4]];
+        const amounts = [50, 100, 150];
+
+        await this.contract.batchMint(owners, amounts, { from: accounts[0] });
+
+        const totalSupply = await this.contract.totalSupply();
+        assert.equal(totalSupply.toNumber(), 300, "Total supply does not match minted amount for multiple users");
+
+        for (let i = 0; i < owners.length; i++) {
+            const balance = await this.contract.balanceOf(owners[i]);
+            assert.equal(balance.toNumber(), amounts[i], `Balance of owner ${i + 1} does not match minted amount`);
+        }
+    });
+
+    it("test mint tokens for multiple owners mismatched array lengths", async function () {
+        const owners = [accounts[2], accounts[3]];
+        const amounts = [50, 100, 150];
+
+        try {
+            await this.contract.batchMint(owners, amounts, { from: accounts[0] });
+            assert.fail("Minting with mismatched array lengths should have thrown an error");
+        } catch (error) {
+            assert(error.message.includes("owners and amounts length mismatch"), "Expected Owners and amounts length mismatch error");
+        }
+    });
+});
\ No newline at end of file