BTC wallet could be a software program, hardware, online web service, or piece of paper that works by generating the public-key-and-non-public-key pair needed for users to interact in a transaction, i.e., to transfer value between Bitcoin wallets and embrace this info within the blockchain. 1 What’s a Bitcoin wallet? While the handle is public, the private key should solely ever be seen by the proprietor of the wallet and by no means shared with other individuals.