Need help with "Sign in with Ethereum"

#ETH #Ethereum

Supporting contract wallet makes Eauth ‘not pure’ since ecrecover is a pure function but isValidSignature() is a view function depends on Ethereum’s state.

What’s wrong with that? In the long run you’d want most users’ verification functions to be not pure, because that’s how you can do key revocation etc etc.

OhNoEthereum via https://ift.tt/2PblI7a @@vbuterin Vbuterin, @Khareem Sudlow