{"service":"Offer Proof Gate","version":"1.0","paid_unit":"one bounded report on caller-supplied public listing text and 1-5 claimed evidence snippets","price":{"network":"nano:mainnet","asset":"XNO","amount_raw":"10000000000000000000000000000","amount_xno":"0.01"},"payment":{"max_timeout_seconds":60,"work":"required","note":"The x402 quote allows 60 seconds for the payer to prepare the signed send, including Nano work. This is client guidance, not a settlement or confirmation deadline."},"prepaid":{"endpoint":"POST /v1/prepay","price_raw":"10000000000000000000000000000000","calls":1000,"recovery":"POST /v1/prepay/recover with the client-generated recovery secret and confirmed payment ID"},"endpoint":"POST /v1/offer-proof","max_body_bytes":16384,"input":{"source_url":"https://example.org/offer","source_text":"Reward: 25 USDC. Status: Open. 0 awards remaining. No entry fee.","claims":[{"field":"awards_remaining","value":1,"quote":"0 awards remaining"}]},"fields":["reward {amount,unit}","status open|closed","awards_remaining integer","entry_fee none|required","deadline ISO UTC"],"note":"No URL fetch or buyer/payment guarantee; exact quote checks only."}