0

I am learning solidity NFT, I am trying to generate v, r ,s using python web3

require(owner() == ecrecover(keccak256(abi.encodePacked(this, tokenId)), v, r, s), "owner should sign tokenId");

My python script

from web3.auto import w3
from eth_account.messages import encode_defunct

msg = "contractaddrsstokenid"
private_key = "mywalletprivatekey"
message = encode_defunct(text=msg)
signed_message =  w3.eth.account.sign_message(message, private_key=private_key)
print(signed_message)

it returns v, s, r and signature. But values are supported in contract, it says invalid format. i have changed to base64 and use. It fails with "owner should sign tokenId". How can i create v,s,r using python web3.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.