>>>>> "Malcolm" == Malcolm Howell <hashcash@xxxxxxxxxxxxxxxxxxx> writes: Malcolm> - Recipients will likely be storing the random field in a Malcolm> double spend database. This way, they're not storing your Malcolm> padding in there too. Is there any reason recipients would want to store just the random field, as opposed to, say, a sha1 hash (or some similar hash) of the entire stamp? OK, probably maybe not just a normal sha1 hash, since we already know what the first few bits will be ... -- Hubert Chan <hubert@xxxxxxxxx> - http://www.uhoreg.ca/ PGP/GnuPG key: 1024D/124B61FA Fingerprint: 96C5 012F 5F74 A5F7 1FF7 5291 AF29 C719 124B 61FA Key available at wwwkeys.pgp.net. Encrypted e-mail preferred.