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MimirAPI Provenance Certificate
x402
MimirAPI Provenance Certificate is a paid API for AI agents from mimirapi.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-11).
Issues a chain-of-custody license certificate binding a SHA-256 content hash to an issuer, subject, and license terms under an HMAC-SHA-256 signature.
Price / call$0.25
Success—
StatusUnknown
How this service works
Chain-of-custody license certificate for any digital asset: a SHA-256 content hash bound to issuer, subject, and license terms under an HMAC-SHA-256 signature. Deterministic, portable, and verifiable through the issuer while the current HMAC v1 profile is active — a receipt an agent can carry to record what it licensed, from whom, and on what terms.
Output
A structured license certificate containing the SHA-256 content hash, issuer identity, subject, license terms, and an HMAC-SHA-256 signature over those fields — serving as a portable, verifiable chain-of-custody receipt that can be presented to the issuer for verification while the HMAC v1 profile is active.
Example use cases
AI-generated image licensing record
“I just licensed an AI-generated image with SHA-256 hash 'd4e2b1a0...' under a commercial-use license, and the subject is my company 'Acme Corp' — can you issue a provenance certificate so I have a signed, verifiable receipt of that licensing transaction?”
Document provenance for legal compliance
“We need to certify that the PDF with content hash 'f9c3a7...' was licensed to 'legal-team@lawfirm.io' under our Enterprise License Agreement — generate a chain-of-custody certificate so we have an auditable record for compliance.”
Agent-to-agent content licensing attestation
“My agent just acquired a dataset with hash 'b2d8e4...' from a data marketplace under a research-only license — create a provenance certificate with subject 'research-agent-007' so the agent can carry that receipt and prove it licensed the data legitimately.”
Technical details
Endpoint
POSThttps://mimirapi.com/v1/provenance/certificate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cryptographically signed, portable, auditable license receipt binding a specific digital asset (identified by its SHA-256 hash) to a named subject and license terms — especially in agentic workflows where an AI agent must carry proof of what it licensed and from whom. Prefer it over simple logging or database writes when you need issuer-verifiable integrity and portability of the certificate across systems.
Side effects
- Invalid or malformed SHA-256 hex in contentHash — certificate rejected
- Missing required fields (license, subject, or contentHash) — 400 bad request
- Payment not settled via x402 protocol — 402 payment required
- HMAC signing failure on issuer side — 500 internal error
- Content hash format not conforming to hex encoding — validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| license | string | |
| subject | string | |
| contentHash | string | SHA-256 hex of the asset |
Tags
x402
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