On Sat, Mar 22, 2014 at 10:08:36AM -0500, Troy Benjegerdes wrote: > On Sat, Mar 22, 2014 at 04:47:02AM -0400, Peter Todd wrote: > > There's been a lot of recent hoopla over proof-of-publication, with the > > OP_RETURN <data> length getting reduced to a rather useless 40 bytes at > > the last minute prior to the 0.9 release. Secondly I noticed a > > overlooked security flaw in that OP_CHECKMULTISIG sigops weren't taken > > into account, making it possible to broadcast unminable transactions and > > bloat mempools.(1) My suggestion was to just ditch bare OP_CHECKMULTISIG > > outputs given that the sigops limit and the way they use up a fixed 20 > > sigops per op makes them hard to do fee calculations for. They also make > > it easy to bloat the UTXO set, potentially a bad thing. This would of > > course require things using them to change. Currently that's just > > Counterparty, so I gave them the heads up in my email. > > I've spend some time looking at the Datacoin code, and I've come to the > conclusion the next copycatcoin I release will have an explicit 'data' > field with something like 169 bytes (a bakers dozen squared), which will > add 1 byte to each transaction if unused, and provide a small, but usable > data field for proof of publication. As a new coin, I can also do a > hardfork that increases the data size limit much easier if there is a > compelling reason to make it bigger. > > I think this will prove to be a much more reliable infrastructure for > proof of publication than various hacks to overcome 40 byte limits with > Bitcoin. > > I am disclosing this here so the bitcoin 1% has plenty of time to evaluate > the market risk they face from the 40 byte limit, and put some pressure to > implement some of the alternatives Todd proposes.
Lol! Granted, I guess I should "disclose" that I'm working on tree chains, which just improve the scalability of blockchains directly. I'm think tree-chains could be implemented as a soft-fork; if applied to Bitcoin the datacoin 1% might face market risk. :P -- 'peter'[:-1]@petertodd.org 0000000000000000bbcc531d48bea8d67597e275b5abcff18e18f46266723e91
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