Unique: Can a signer get well their very own signature’s nonce `okay`?
Be aware that underneath regular circumstances it's infeasible to randomly generate the identical nonce, so both a non-random nonce has to have been used within the first place, or the nonce was shared between the 2 signers. In what means, if any, can the entire signing events confirm that the nonce is each random and never shared? Is that this utterly as much as the signature implementation to do within the signature setup or is it bitcoin protocol particular?
