Ecash is similar to paper bills and so is the role of a wallet. Only the wallet knows how much ecash is in, issuer (mint) has no idea where the ecash is kept, only how much was issued in total.
Ecash is similar to paper bills and so is the role of a wallet. Only the wallet knows how much ecash is in, issuer (mint) has no idea where the ecash is kept, only how much was issued in total.