{"uid":"cap_D-UFKFtHOJGhk-qvuKFHD","slug":"neo-timestamp-9f8e7190","name":"neo timestamp","description":"Prove you had this sha256 at this time: signed receipt with its position in neo's public log, anchored daily on Bitcoin (OpenTimestamps) and Software Heritage.","url":"https://neo-collettive.onrender.com/x402/timestamp?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"note":{"type":"string","maxLength":200},"sha256":{"type":"string","pattern":"^[0-9a-f]{64}$"}}},"responseSchema":{"type":"json","example":{"sha256":"...","receipt":{"log":{"seq":11}},"signature":"..."}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_gC5RwUovjnnNCrozq-N1T","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates a signed timestamping receipt proving you possessed a specific SHA-256 hash at a given moment, with the proof anchored to Bitcoin via OpenTimestamps and Software Heritage through Neo's public append-only log.","exampleAgentPrompt":"Timestamp this SHA-256 hash for me and get a signed receipt proving I had it right now: a3f1c2d4e5b67890abcdef1234567890abcdef1234567890abcdef1234567890ab — add the note 'contract draft v2'.","exampleUseCases":[{"title":"Proof of prior art for IP","prompt":"I need to prove I had this document before today — timestamp this SHA-256 hash for me and get a signed receipt anchored to Bitcoin: d4e5f6a7b8c9012345678901234567890123456789012345678901234567890123. Note it as 'invention disclosure Q2 2025'."},{"title":"Audit trail for agent output","prompt":"My agent just produced a report — timestamp its SHA-256 hash so I have a verifiable record that this exact output existed right now: b1c2d3e4f5a6789012345678901234567890123456789012345678901234567890. Label it 'agent report run 47'."},{"title":"Legal evidence of document existence","prompt":"I need a cryptographic timestamp proving this contract hash existed before signing negotiations started — can you get a signed receipt from neo's public log for this sha256: 0f1e2d3c4b5a678901234567890123456789012345678901234567890123456789?"}],"resultDescription":"A JSON receipt containing the submitted SHA-256 hash, a signed receipt object with the hash's sequential position in Neo's public append-only log, and a cryptographic signature. The log is anchored daily to Bitcoin via OpenTimestamps and to Software Heritage, providing an externally verifiable, tamper-evident proof of existence at the time of submission.","failureModes":["Invalid SHA-256 format (not 64 lowercase hex characters) returns a validation error","Note field exceeding 200 characters is rejected","Service unavailability on Render's free tier may cause cold-start latency or 503 errors","Payment failure via x402 results in a 402 response before processing","Duplicate hash submissions are accepted but each creates a new log entry with a different sequence number"],"whenToPreferThis":"Choose this endpoint when you need a cryptographically verifiable, third-party-witnessed proof that a specific SHA-256 hash existed at a particular point in time, with the proof anchored to Bitcoin's blockchain for long-term tamper resistance. It is ideal for intellectual property protection, audit trails, legal evidence, and agent output certification where you need an independent witness beyond self-signed timestamps. Prefer it over generic OpenTimestamps clients when you also want a human-readable signed receipt with a public log sequence number and Software Heritage anchoring.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T12:34:33.078Z","isFirstParty":false,"canonicalSlug":"neo-timestamp-9f8e7190"}