Appreciate you diving into the mechanics! You’ve hit the exact boundary where code meets off-chain reality - a smart contract can't natively verify a P2P fiat wire or bank transfer without trusting external data or humans.
Here is how we look at those three questions through the lens of minimizing trust:
Arbitration Timeline (3 to 5 Days): Long enough for global time zones to submit bank receipts/chat logs, short enough to prevent capital griefing. If one party goes silent, it defaults after the timeout. In our case it's 7 days
https://docs.zen.land/agents/becoming-an-agentFund Release (Instant & Automatic): Executed programmatically the exact second the arbiter signs the verdict. Zero manual platform delays.
https://docs.zen.land/agents/resolving-disputesArbiter Model ("Judging Power Without Stealing Power"): Spot on. Community voting sounds decentralized, but in practice, it leaks trade privacy and gets hit by voter apathy or sybil/bribery.
A designated arbiter works best if the smart contract mathematically restricts them to only splitting funds between Buyer and Seller. Even if an arbiter goes rogue, they can never steal or route funds to themselves - they can only choose who gets what. In our case we ask our agents to stake real money
https://docs.zen.land/agents/agent-staking"We can't fix human nature, but we can build rigid guardrails so that when humans disagree, the blast radius is strictly contained."