On Wednesday, April 05, 2017 9:37:45 PM Gregory Maxwell via bitcoin-dev wrote: > Beginning block X and until block Y the coinbase transaction of > each block MUST either contain a BIP-141 segwit commitment or a > correct WTXID commitment with ID 0xaa21a9ef.
Why not simply require the BIP-141 commitment? > Existing segwit using miners are automatically compatible with > this proposal. Not entirely. The commitment is not required until segwit activates. But this should be trivial to implement at least. > == Overt attack == > > The non-covert form can be trivially blocked by requiring that > the header version match the coinbase transaction version. > > This proposal does not include this block because this method > may become generally available without restriction in the future, > does not generally interfere with improvements in the protocol, > and because it is so easily detected that it could be blocked if > it becomes an issue in the future. How does it not interfere with BIP 9? I suppose the versionbits could be moved to the generation transaction version, but this would hide them from light clients. > This document is placed in the public domain. Could you please use one of these? https://github.com/bitcoin/bips/blob/master/bip-0002.mediawiki#Recommended_licenses Luke _______________________________________________ bitcoin-dev mailing list email@example.com https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev