# Gavin Andresen # 2013-08-30 07:29:22 # https://bitcointalk.org/index.php?topic=284178.msg3040840#msg3040840 It bloats the UTXO set, which is bad. @p{par} MasterCoin transactions should all be spendable or provably prune-able. There are plenty of ways to accomplish that, the easiest of which that works today would be to stuff data into unused public keys of an OP_CHECKMULTISIG transaction. @p{brk}