I'm not sure what you're trying to do here. This situation is very unlikely to happen. Bitsquare lowers the incentive for scammers as much as possible by a set of measures.
I think I understand the basics, especially how there is an incentive for both buyers and sellers to NOT try and commit fraud or cheat (as it would only *cost* them money). But I'm trying to pinpoint how or where the trust factor comes into play.
If I want to buy bitcoins, I accept an order, and wire my USD or EUR, to whom or where do I wire it? Directly to the seller, or to an unknown intermediary? If at any point the arbitrator controls my wired funds and/or our security deposits, how can we (both me and the seller) be sure the arbitrator doesn't disappear with my fiat?
The arbitrator is a more or less randomly chosen person to solve cases where one trade participant is cheating. If you're not happy with the decision of the arbitrator (unlikely case of collusion between the arbitrator and the scammer) you can call another arbitrator. The case will be looked into and in case of collusion, arbitrator rights plus arbitrator security deposits (which is at least two times the trade volume) will be taken from the colluding arbitrator.
Ah, OK, I didn't notice that before, that's good. But who or what controls his security deposit, or where does an arbitrator send his security payment to?
Thanks again, trying to get BitSquare's security mechanism as clear as possible.
You do the Fiat transfer directly to your trade peer via online banking or whatever method you choose. Similar like LocalBitcoin.
The Bitcoin is held in 2of3 MultiSig. Keyholders are both traders and an arbitrator.
The security deposit of the arbitrator is held in a 4of6 MS. Keyholders are the "supreme court" arbitrators which are the arbitrators with the highest reputation (not anonymous, higher security deposit, many cases solved successfully). If an arbitrator colludes or does not meet defined quality standards, he will lose all his security deposit, which is in any case much more what he can win when trying to cheat.
If you are interested in more details please read our whitepaper and the related papers about the arbitration system and risk analysis or check out the videos.