The wallet where the investor lost the private key has the function of retrieving, and private key retrieval is set during use, so the lost bitcoin private key can be directly found through retrieval.

The private key is the representative who has the right to withdraw money from the bitcoin address. If you master the private key, you can master all the bitcoins on its corresponding bitcoin address. The private key can calculate the public key, and the public key can calculate the bitcoin address. Every transaction, the payer must show the private key and the signature generated by the private key. The signature of each transaction is different, but it is generated by the same private key. The private key is a long string.