On Fri, Sep 03, 2021 at 08:32:19PM -0700, Jeremy via bitcoin-dev wrote: > Hi Bitcoin Devs, > > I recently noticed a flaw in the Sequence lock implementation with respect > to upgradability. It might be the case that this is protected against by > some transaction level policy (didn't see any in policy.cpp, but if not, > I've put up a blogpost explaining the defect and patching it > https://rubin.io/bitcoin/2021/09/03/upgradable-nops-flaw/
Isn't this why BIP68 requires using tx.version=2? Wouldn't we just deploy any new nSequence rules with tx.version>2? -Dave
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