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Subject: Re: [bitcoin-dev] BIP - limiting OP_RETURN / HF X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 17 Apr 2021 15:50:21 -0000 --xHFwDpU9dbj6ez1V Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 17, 2021 at 03:57:55AM +0000, Christopher Gilliard via bitcoin-= dev wrote: > Thanks ZmnSCPxj. Yes, I agree there are many ways to embed arbitrary data > in the blockchain and it's not feasible to block all of them. That is why > it's important to, at the same time as limiting the OP_RETURN to one per > block, also propose and implement a layer 2 solution for timestamping > so people have a clear and simple upgrade path. That is what I will be > discussing in one of the BIPs I intend to release early next week. Note that an aggregated timestamping service already exists: https://petertodd.org/2016/opentimestamps-announcement But timestamping is useless for most things people want to do, as it can't commit to a unique history. It merely proves something existed in the past.= For uniqueness, you need something like: https://petertodd.org/2017/scalable-single-use-seal-asset-transfer Anyway, at current fees being what they are there's no compelling reason to= try to prevent people from embedding data in the Bitcoin block chain with conse= nsus changes. Economics is preventing that just fine. --=20 https://petertodd.org 'peter'[:-1]@petertodd.org --xHFwDpU9dbj6ez1V Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEFcyURjhyM68BBPYTJIFAPaXwkfsFAmB7A6sACgkQJIFAPaXw kftgzAf6Ar/Gh8KX4szq3/Pz2QM6N4SrFVOT9ZwPsZhq28a6/HCBvhpP6kfnFrlT xXz0LJ9GEiVkshDcqIM1ZrLqQ57zCAjkUxvvRuy/3OenHT4BLf6YGkYLhOB2+807 bv2wJJ+8x6jinjP450I99vjo2yss7cVCoYyvI2YUA4IQL7chjFEZDr5glqlV2teo aA8XlRZ6JSbbRQ4hYtNiFZ73gzleP452nLjwg/SCIPCE6bjPGYDuH1RTj1TARaRK lTMFfI2tBm27Uh+kYwauFdJtvuMvJWbymDffcsehyDzpNr3O3+ybLEeaMR+ERn2X r03SSn4AwNLLxtpxJ6YR07CSu4Q02w== =ugST -----END PGP SIGNATURE----- --xHFwDpU9dbj6ez1V--