Prove that you have the 66 private key by sharing the SHA-256 of the public key. This way we can verify if the address is correct
No one will be able to derive the public key, but we can verify that you have it
why the sha256 hash of the
public key and not simply publish the sha256 hash of the “
PRIVATE” key instead? Sha256 is secure and there is no way backwards to get the private key. This would mean that everyone in here could only check
afterwards whether the person knew the correct private key, i.e. only after the pubkey had been made public by a TX.