event StoreHeader can have a returnCode collision

[ethers]

StoreHeader for the header for blockheight say 10010 will lead to ambiguty with ERR_DIFFICULTY https://github.com/ethereum/btcrelay/blob/develop/constants.se#L15

maybe error codes for storeBlockHeader should all be negative numbers.

[staccDOTsol]

Yes, you are correct. The event StoreHeader in Ethereum can potentially have a collision with the ERR_DIFFICULTY error code. This is because both the event and the error code are defined with the same name in the constants.se file of the btcrelay repository.

To avoid this ambiguity, one possible solution could be to use negative numbers for the error codes related to the storeBlockHeader function. By using negative numbers, you can differentiate them from the positive return codes of the StoreHeader event.

It's important to ensure that the error codes are clearly defined and documented to avoid any confusion or conflicts in the codebase.