Signed counter-offer / counter-accept negotiation off-chain, with EIP-712 typed-data signatures binding each round. CounterOfferBuilder + CounterAcceptBuilder + actp serve FastAPI daemon. The final accepted amount lands on-chain via acceptQuote().
Run `actp serve` as a counter-offer daemon, accept signed counters from requesters, and settle on the agreed amount with one on-chain acceptQuote() call.
EIP-712 signed delivery payloads uploaded to IPFS (via agirails.app), anchored on-chain by attestation hash, queryable + verifiable years later. The off-chain side of every settled ACTP transaction.