# Gavin Andresen
# 2011-08-23 01:02:11
# https://bitcointalk.org/index.php?topic=38620.msg474612#msg474612

@s{quotedtext}
@s{quotedtext}
 @p{brk}
Why couldn't the-collective-we only revoke the double-spends (and subsequent txns that depended on them) ? @p{par}

A hard-coded list of invalid txids wouldn't be hard to insert into the is-valid-transaction checks, and that along with a blockchain checkpoint would work just fine.  Valid transactions on the bad chain would move to the new chain (actually, they'd already be on the non-attacker chain, since the miners on both sides of the block split would have included them). @p{brk}