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Securaw TimeChain2 File Timestamp Registration (delivery_proof)
x402
Securaw TimeChain2 File Timestamp Registration (delivery_proof) is a paid API for AI agents from www.securaw.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-20).
Registers a file's SHA-256 hash with Securaw/TimeChain2 and returns a downloadable ZIP containing an OpenTimestamps proof, metadata, and independent verification instructions.
Price / call$0.05
Success—
StatusUnknown
How this service works
Register a file SHA-256 with Securaw/TimeChain2 and receive a downloadable OpenTimestamps proof directly binding its original bytes. ZIP includes .ots, metadata and independent-verification instructions. Hash only; no file upload. Initial receipt is NOT Bitcoin confirmed. Check the status link for later anchoring; no guaranteed deadline, authorship or content-truth certification. Idempotency-Key required.
Output
A downloadable ZIP archive containing: a .ots (OpenTimestamps) proof file binding the submitted SHA-256 to a TimeChain2 event, associated metadata about the registration, independent verification instructions, and a status link to check when the proof is later anchored to the Bitcoin blockchain. The initial receipt is not yet Bitcoin-confirmed; Bitcoin anchoring occurs later with no guaranteed deadline.
Example use cases
Notarizing a signed contract
“I have a signed NDA and its SHA-256 is 9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a8 — can you register it with Securaw TimeChain2 so I have a blockchain timestamp proving it existed today?”
Proving research data integrity
“Before I publish my dataset, I want to timestamp its hash so reviewers can verify it hasn't changed — the SHA-256 is b94f6f125c79e3a5ffaa826f584c10d52ada669e6762051b826b55776d7a91b3. Please send it to Securaw for an OpenTimestamps proof.”
Archiving software release hash
“We're releasing v2.1.0 of our software and I want a tamper-evident timestamp for the release bundle — the SHA-256 is 2c624232cdd221771294dfbb310acbc7c3c6f0c929e5fdfc800c9a43e2dc3df. Get me the .ots proof from Securaw TimeChain2.”
Technical details
Endpoint
POSThttps://www.securaw.com/cryptovar/x402/delivery_proof?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a hash-only (no file upload) cryptographic proof of existence for a document or file, specifically an OpenTimestamps-format .ots proof anchored via Securaw's TimeChain2 service. Prefer this over generic blockchain notarization services when you want an open, independently-verifiable OpenTimestamps proof bundled with verification instructions at low per-call cost ($0.05 USDC). Ideal when file privacy is important since only the SHA-256 is transmitted.
Side effects
- Invalid SHA-256 format (not 64 lowercase hex characters) returns a validation error
- Missing Idempotency-Key header causes request rejection
- Duplicate submission with same Idempotency-Key returns cached result rather than error
- Bitcoin anchoring is not immediate — initial proof is pending confirmation
- No guarantee of specific anchoring deadline; status must be checked separately
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| service | string | |
| parameters | object |
Tags
x402
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