On Mon, Nov 04, 2013 at 01:16:49PM -0500, Peter Todd wrote:
> You'll want to put some "reasonable" limit on actual path lengths, just
> pick something like 32 levels; if applications pick their UUIDs honestly
> a collision will be very unlikely. You can also make the allowed paths
> block specific by defining them as H(uuid | nonce), with nonce as an

This could be H(uuid | nLockTime) Coinbase transactions still have a
nLockTime, and while it's generally left at zero it can be any value
valid for a transaction in the block.

-- 
'peter'[:-1]@petertodd.org
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