SYNTHORA arbitro

M2M Dispute Arbiter: deterministic evidence checks (on-chain payment on Base, endpoint liveness, payTo integrity, delivery vs promise, notarized agreement) and an Ed25519-signed verdict: release / refund / split / insufficient_evidence. Escrow release-check included. No fund custody. $0.02 USDC via x402 on Base. SYNTHORA Trust Layer (EU). First 3 calls FREE per wallet - send header X-WALLET: 0x<addr>.