2 ms·
You use the python or JS web3 library to ask the users private key to sign a message you control. Then you "recover" the public key/address from the signed mess
by simonvc 5y ago
You use the python or JS web3 library to ask the users private key to sign a message you control.
Then you "recover" the public key/address from the signed message.
Then you ping infura and ask for the balanceOf the nft contact for that public address.