key leakage

It is reported that James O’Beirne, a Bitcoin developer, is developing a Bitcoin vault function. When hackers try to steal their Bitcoin, they remind users, and then prevent theft by transferring funds to safer wallets. This function is similar to a Bitcoin smart contract or “contract”, which imposes restrictions on the use of Bitcoin. Vault users must transmit two separate transactions in two different blocks before spending Bitcoin (BTC), and send an alarm after the first transaction (with time delay), allowing users to approve the transaction or scan the token…