On Fri, Mar 08, 2019 at 03:20:49PM -0500, Matt Corallo via bitcoin-dev wrote: > To make testing easier, it may make sense to keep the existing block header > format (and PoW) and instead apply the signature rules to some field in the > coinbase transaction.
Maybe make the signature be an optional addition to the header, so that you can have a "light node" that doesn't download/verify sigs and a full node that does? (So signatures just sign the traditional 80-byte header, and aren't included in the block's tx merkle root, and the prevHash reflects the hash of the previous block's 80-byte header, without the signature) I think you could do that by adding a p2p service bit to say "send me signatures if you have them / I can send you signatures", which changes the p2p encoding of the header from (ver, prev, mrkl, time, bits, nonce) to (ver, prev, mrkl, time, 0, nonce, bits, sig), and change header processing to ignore headers from nodes that don't have the service bit set? If you did this, it might be a good idea to enforce including the previous block's header signature in the current block's coinbase. Cheers, aj _______________________________________________ bitcoin-dev mailing list bitcoin-dev@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
