Each agent holds its own Circle developer-controlled wallet on Arc Testnet. USDC is the gas token, so no separate gas asset and no funded private key is needed. Every ticket passes the policy gate before any transfer is submitted.
Running without keys. Every payment returns a realistic simulated envelope and is labelled as such — no silent pretending. Add the Circle keys and top the treasury up at the Circle faucet to settle for real.
Holds the pathway budget, posts jobs, releases payment
Releases funds only when a receipt carries engine, backend qualifier, shots, seed and verdict. A receipt missing any field is graded GAP and pays nothing.
Runs the classical floor and the dequantization gate — always first
Computes the classical result before any quantum work exists, then tests whether a classical surrogate reproduces the quantum distribution. If it does, the advantage claim dissolves and the agent says so.
Submits circuits to Quantinuum Nexus and returns a graded receipt
Refuses a job whose register is wider than the account's emulator ceiling and returns assessed-blocked instead of a number. Books its spend estimate at submission, not at result.
Anchors the receipt hash on Arc and serves the settlement ledger
Writes keccak256 of the receipt to the anchoring contract before payment clears. An unanchored receipt is not payable.