-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 17/07/12 23:27, Tony Arcieri wrote: > I'd like both sides to sign off on both a completed file transfer > and a completed file storage lease. Failure to do so would prevent > ongoing relationships. > > Sybils can claim whatever false histories they want, however the > assumption is that, through normal system operation, a given peer > will come into contact with more truthful peers than Sybils, and > that by virtue of that the false histories concocted by Sybil > networks will be noise filtered out by a collaborative filtering > algorithm. > > Each peer is looking for patterns in the data (specifically > self-similarity) across the combined histories of every peer > they've ever interacted with. As long as they are able to reach a > majority of "trustworthy peers" then hopefully the false histories > concocted by colluding Sybils will be irrelevant.
So, if I understand right, both parties must sign off on a transaction in order for a third party to include the transaction in its similarity calculations? So Sybils can create fake transactions between themselves, but not between a Sybil and a legitimate peer? If that's right, I only have two remaining concerns: bootstrapping and positive feedback. The problem with bootstrapping is how to distinguish legitimate peers from Sybils when you have no interaction history. The problem with positive feedback is how to prevent the interaction graph from collapsing into clusters or isolated components. Interaction leads to similarity, similarity leads to interaction - don't peers become more and more likely to interact with the same peers? Is there a need for a countervailing mechanism to encourage exploration and give new peers a chance to interact? Cheers, Michael -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAEBAgAGBQJQB85vAAoJEBEET9GfxSfMB84IAKtHJZ4pi4QBBsGwrfI3PSk8 G/mrcLADvScC/qXpHadxYUWacG8mubZIWqBkMWw4azh22rqGjiGoly2BdmJ3nv5b l6AS4m7rbUPWqUysvQqQSg0JGDDVvB5b7w46pyQgVElB4AGEdDb5dFUsIFRpAUKm O9YmiY/Eex/aNnofAqqHImL+az0Dtv9zlEWIZ9gxJyAO/8e7tTRaaghhI/b97Is+ sDpFCEgBJ5uUbk+fIUX2qYWZ+fhkx9j0a1vTMHtuu4n9E22R4dU/5m7VqzSkwUaY a8Qg/m3mJFX4fBPgG0J38MKiElh5dqNKvqFTMrjL6kn7o2CCFEtPgWNU2LfarEk= =Iu4B -----END PGP SIGNATURE----- _______________________________________________ p2p-hackers mailing list [email protected] http://lists.zooko.com/mailman/listinfo/p2p-hackers
