diff --git a/crates/cdk/src/nuts/mod.rs b/crates/cdk/src/nuts/mod.rs
index 7e59e7c9b..6a2425fe6 100644
--- a/crates/cdk/src/nuts/mod.rs
+++ b/crates/cdk/src/nuts/mod.rs
@@ -13,6 +13,8 @@ pub mod nut11;
 pub mod nut12;
 #[cfg(feature = "nut13")]
 pub mod nut13;
+pub mod nut17;
+pub mod nut18;
 
 #[cfg(feature = "wallet")]
 pub use nut00::wallet::{PreMint, PreMintSecrets, Token};
@@ -24,7 +26,8 @@ pub use nut02::{Id, KeySet, KeySetInfo, KeysetResponse};
 pub use nut03::PreSwap;
 pub use nut03::{SwapRequest, SwapResponse};
 pub use nut04::{
-    MintBolt11Request, MintBolt11Response, MintQuoteBolt11Request, MintQuoteBolt11Response,
+    MintBolt11Request, MintBolt11Response, MintMethodSettings, MintQuoteBolt11Request,
+    MintQuoteBolt11Response,
 };
 pub use nut05::{
     MeltBolt11Request, MeltBolt11Response, MeltQuoteBolt11Request, MeltQuoteBolt11Response,
diff --git a/crates/cdk/src/nuts/nut00.rs b/crates/cdk/src/nuts/nut00.rs
index 5a73c095e..ad6cd51b0 100644
--- a/crates/cdk/src/nuts/nut00.rs
+++ b/crates/cdk/src/nuts/nut00.rs
@@ -112,6 +112,7 @@ impl fmt::Display for CurrencyUnit {
 pub enum PaymentMethod {
     #[default]
     Bolt11,
+    BtcOnChain,
     Custom(String),
 }
 
@@ -121,6 +122,7 @@ impl FromStr for PaymentMethod {
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         match s {
             "bolt11" => Ok(Self::Bolt11),
+            "btconchain" => Ok(Self::BtcOnChain),
             _ => Ok(Self::Custom(s.to_string())),
         }
     }
@@ -130,6 +132,7 @@ impl fmt::Display for PaymentMethod {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
             PaymentMethod::Bolt11 => write!(f, "bolt11"),
+            PaymentMethod::BtcOnChain => write!(f, "btconchain"),
             PaymentMethod::Custom(unit) => write!(f, "{}", unit),
         }
     }
diff --git a/crates/cdk/src/nuts/nut17.rs b/crates/cdk/src/nuts/nut17.rs
new file mode 100644
index 000000000..6ac4281df
--- /dev/null
+++ b/crates/cdk/src/nuts/nut17.rs
@@ -0,0 +1,74 @@
+//! NUT-17: Minting tokens Onchain
+//!
+//! <https://github.com/cashubtc/nuts/blob/main/17.md>
+
+use serde::{Deserialize, Serialize};
+
+use super::{BlindSignature, BlindedMessage, CurrencyUnit, MintMethodSettings};
+use crate::types::MintQuote;
+use crate::Amount;
+
+/// Mint quote request [NUT-17]
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct MintQuoteBtcOnchainRequest {
+    /// Amount
+    pub amount: Amount,
+    /// Unit wallet would like to pay with
+    pub unit: CurrencyUnit,
+}
+
+/// Mint quote response [NUT-17]
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct MintQuoteBtcOnchainResponse {
+    /// Quote Id
+    pub quote: String,
+    /// Payment request to fulfill
+    pub address: String,
+    /// Whether the the request has been paid
+    pub paid: bool,
+    /// Unix timestamp until the quote is valid
+    pub expiry: u64,
+}
+
+impl From<MintQuote> for MintQuoteBtcOnchainResponse {
+    fn from(mint_quote: MintQuote) -> MintQuoteBtcOnchainResponse {
+        MintQuoteBtcOnchainResponse {
+            quote: mint_quote.id,
+            address: mint_quote.request,
+            paid: mint_quote.paid,
+            expiry: mint_quote.expiry,
+        }
+    }
+}
+
+/// Mint request [NUT-17]
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct MintBtcOnchainRequest {
+    /// Quote id
+    pub quote: String,
+    /// Outputs
+    pub outputs: Vec<BlindedMessage>,
+}
+
+impl MintBtcOnchainRequest {
+    pub fn total_amount(&self) -> Amount {
+        self.outputs
+            .iter()
+            .map(|BlindedMessage { amount, .. }| *amount)
+            .sum()
+    }
+}
+
+/// Mint response [NUT-17]
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct MintBtcOnchainResponse {
+    /// Blind Signatures
+    pub signatures: Vec<BlindSignature>,
+}
+
+/// Mint Settings
+#[derive(Debug, Default, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct Settings {
+    methods: Vec<MintMethodSettings>,
+    disabled: bool,
+}
diff --git a/crates/cdk/src/nuts/nut18.rs b/crates/cdk/src/nuts/nut18.rs
new file mode 100644
index 000000000..a6e4b4847
--- /dev/null
+++ b/crates/cdk/src/nuts/nut18.rs
@@ -0,0 +1,68 @@
+//! NUT-18: Melting Tokens Onchain
+//!
+//! <https://github.com/cashubtc/nuts/blob/main/18.md>
+
+use serde::{Deserialize, Serialize};
+
+use super::nut05::MeltMethodSettings;
+use super::CurrencyUnit;
+use crate::nuts::Proofs;
+use crate::{Amount, Bolt11Invoice};
+
+/// Melt quote request [NUT-18]
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct MeltQuoteBtcOnchainRequest {
+    /// Amount to be paid
+    pub amount: Amount,
+    /// Bitcoin onchain address to be paid
+    pub address: Bolt11Invoice,
+    /// Unit wallet would like to pay with
+    pub unit: CurrencyUnit,
+}
+
+/// Melt quote response [NUT-18]
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct MeltQuoteBtcOnchainResponse {
+    /// Quote Id
+    pub quote: String,
+    /// Description
+    pub description: String,
+    /// The amount that needs to be provided
+    pub amount: u64,
+    /// The fee that is required
+    pub fee: u64,
+    /// Whether the the request has been paid
+    pub paid: bool,
+    /// Unix timestamp until the quote is valid
+    pub expiry: u64,
+}
+
+/// Melt BTC on chain Request [NUT-18]
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct MeltBtcOnchianRequest {
+    /// Quote ID
+    pub quote: String,
+    /// Proofs
+    pub inputs: Proofs,
+}
+
+impl MeltBtcOnchianRequest {
+    pub fn proofs_amount(&self) -> Amount {
+        self.inputs.iter().map(|proof| proof.amount).sum()
+    }
+}
+
+/// Melt Response [NUT-18]
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct MeltBtcOnChainResponse {
+    /// Indicate if payment was successful
+    pub paid: bool,
+    // TXID
+    pub txid: Option<String>,
+}
+
+/// Melt Settings
+#[derive(Debug, Default, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub struct Settings {
+    methods: Vec<MeltMethodSettings>,
+}