If i had a central Bitcoin wallet, and then allowed 3 different people to deposit bitcoin into that address, would there be anyway to distinguish who they are, without knowing who's address is who, i know sending messages with transactions isn't supported by all wallets so i was just wondering if there was a different way.
Like i said i've tried passing a message through the transaction but that isn't always possible from the wallets.
Maybe theres another way to check someone is the owner of a wallet. Other than signing a message of course.