{"uid":"cap_kkYB2KSZU8q54W_onoJe7","slug":"securaw-timechain2-sha-256-bitcoin-proof-verification-18118d8c","name":"Securaw TimeChain2 SHA-256 Bitcoin Proof Verification","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 are explicitly identified. No arbitrary-chain verification. Idempotency-Key required.","url":"https://www.securaw.com/cryptovar/x402/proof_verify?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"service":{"enum":["proof_verify"],"type":"string"},"parameters":{"type":"object","title":"VerifyInput","required":["sha256","event_id"],"properties":{"sha256":{"type":"string","title":"Sha256","pattern":"^[0-9a-f]{64}$","description":"Lowercase SHA-256 of exact original bytes, computed locally. No filename or private content."},"event_id":{"type":"string","title":"Event Id","pattern":"^[A-Za-z0-9][A-Za-z0-9_-]{0,127}$","description":"Securaw/TimeChain2 event identifier from a receipt, never a URL."}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_lybuCVybIuetwV9_vx_-H","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies a SHA-256 hash against a Securaw/TimeChain2 event, reporting both registry checks and direct-file Bitcoin timestamp proof separately with downloadable proof when available.","exampleAgentPrompt":"Can you check whether my file with SHA-256 hash 3a7bd3e2360a3d29eea436fcfb7e44c735d117c42d1c1835420b6b9942dd4f1b was confirmed on Bitcoin using Securaw/TimeChain2 event ID DOC-2024-INVOICE-001?","exampleUseCases":[{"title":"Audit trail for legal document","prompt":"I need to verify that our signed contract — SHA-256 hash b94d27b9934d3e08a52e52d7da7dabfac484efe04294e576b4b0d02e9bf1aab7 — is genuinely timestamped on the Bitcoin blockchain under Securaw event ID LEGAL-CONTRACT-2024-Q3. Can you check and download the proof if it's available?"},{"title":"Intellectual property timestamp check","prompt":"We submitted a design file to TimeChain2 last quarter and got a receipt. Can you confirm that the file with SHA-256 5f4dcc3b5aa765d61d8327deb882cf994b07ea3a3932b6c0e3b9b1e8b06f1239 is genuinely Bitcoin-confirmed under event ID IP-DESIGN-REV2?"},{"title":"Financial record integrity verification","prompt":"Before we close the audit, can you verify that our Q4 financial report with hash e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 actually has a direct-file Bitcoin proof attached to event ID FINRPT-Q4-2024, not just a registry entry?"}],"resultDescription":"Returns a structured result distinguishing registry-level checks from direct-file Bitcoin proof confirmation, indicates whether a proof is downloadable, flags mismatches between the provided SHA-256 and the event record, explicitly identifies legacy receipts lacking direct-file proofs, and clarifies that pending or unavailable statuses are not Bitcoin-confirmed. Missing events and mismatches are billable results.","failureModes":["Event ID not found — billable result returned indicating missing event","SHA-256 mismatch between supplied hash and event record — billable mismatch result","Proof status is pending or unavailable — not Bitcoin confirmed, clearly flagged","Legacy receipt without direct-file proof — identified explicitly in response","Invalid SHA-256 format (not 64 lowercase hex chars) — validation error","Invalid event_id format — validation error","Missing Idempotency-Key header — request rejected","Payment failure or insufficient USDC balance — 402 payment required"],"whenToPreferThis":"Choose this endpoint when you need to cryptographically verify that a specific file's SHA-256 hash is anchored to the Bitcoin blockchain via a Securaw/TimeChain2 event, particularly when you need the distinction between a registry-level check and a direct-file Bitcoin proof, or when you need to download a proof artifact. Not suitable for verifying timestamps on arbitrary blockchains, general hash lookup without a TimeChain2 event ID, or non-Bitcoin proof systems.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:37:02.991Z","isFirstParty":false,"canonicalSlug":"securaw-timechain2-sha-256-bitcoin-proof-verification-18118d8c"}