On Tue, Jul 30, 2013 at 04:11:41PM -0400, Peter Todd wrote: > Unrelated to Tor, but an interesting possibility to improve SPV security > is to ask for the history of a given txout - that is the previous > transactions that funded it. You could even do this with a > zero-knowledge proof, sampling some subset of the prior transactions to s/zero-knowledge/non-interactive/ -- 'peter'[:-1]@petertodd.org 000000000000007f87c6d7e6b8c2dbf36c72c3db4a05055b604faeec59bda024