All components
Receipt verifier
Signed job records are checked against node identity, billing and measured work.
Data flow
The receipt verifier checks the COSE signature and the job-to-billing match. Measured token counts are compared with the gateway before metering records USDG earnings.
Design boundary
A valid work receipt does not guarantee that an AI answer is correct. Canary jobs add a separate check in the design.
How it fits
A completed node job emits a receipt. The verifier checks it before the record reaches metering and epoch building.
Lifecycle
The same cumulative claimed balance prevents consuming one entitlement again through a different route.