{"slug":"www-securaw-com-cryptovar-x402-proof-verify-6ee113","title":"Check a SHA-256 against a Securaw/TimeChain2 event","host":"www.securaw.com","method":"POST","resource":"https://www.securaw.com/cryptovar/x402/proof_verify","category":"company","description":"Check a SHA-256 against a Securaw/TimeChain2 event. Reports registry checks and direct-file Bitcoin proof separately, with downloadable proof when available. Missing events and mismatches are billable results. Pending/unavailable is NOT Bitcoin confirmed. Legacy receipts without direct-file proofs a","price_listed":0.02,"price_asked":0.02,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":855,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"parameters":{"event_id":"fileproof-20260927191946-1429","sha256":"1aa02dbff8eca9062771ff32967ce149ae1f3f837de31e214ae417eed4ebb6e2"},"service":"proof_verify"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":false,"description":"JSON request envelope. Numeric inputs must be JSON numbers. Unknown fields are rejected. Idempotency-Key header required for paid requests.","properties":{"parameters":{"additionalProperties":false,"properties":{"event_id":{"description":"Securaw/TimeChain2 event identifier from a receipt, never a URL.","pattern":"^[A-Za-z0-9][A-Za-z0-9_-]{0,127}$","title":"Event Id","type":"string"},"sha256":{"description":"Lowercase SHA-256 of exact original bytes, computed locally. No filename or private content.","pattern":"^[0-9a-f]{64}$","title":"Sha256","type":"string"}},"required":["sha256","event_id"],"title":"VerifyInput","type":"object"},"service":{"enum":["proof_verify"],"type":"string"}},"required":["service","parameters"],"type":"object"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"properties":{"result":{"type":"object"},"service":{"const":"proof_verify"}},"required":["service","result"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-28","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.02,"price_match":true,"latency_ms":855,"error":null}],"description_full":"Check a SHA-256 against a Securaw/TimeChain2 event. Reports registry checks and direct-file Bitcoin proof separately, with downloadable proof when available. Missing events and mismatches are billable results. Pending/unavailable is NOT Bitcoin confirmed. Legacy receipts without direct-file proofs are explicitly identified. No arbitrary-chain verification. Idempotency-Key required.","last_updated":"2026-09-27T22:31:41.466Z","schemes":["exact"]}