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invinoveritas /witness — Third-Party Claim Anchoring
x402
invinoveritas /witness — Third-Party Claim Anchoring is a paid API for AI agents from api.babyblueviper.com, paid per call via x402, $0.0825/call, status unknown (last checked 2026-10-20).
Anchors a third party's claim byte-for-byte, unmodified, to a neutral record so two independent verifiers can later compose a joint artifact
Price / call$0.0825
Success—
StatusUnknown
How this service works
invinoveritas /witness — anchor a THIRD PARTY's claim byte-for-byte, unmodified and unjudged, so two independent verifiers can compose a joint artifact with
Output
A witness receipt confirming the exact bytes of the submitted claim have been anchored, along with the self-declared source attribution and a timestamp. The record is neutral — the service makes no judgment about the claim's truth — and is designed so two independent verifiers can reference the same artifact for joint composition or dispute resolution.
Example use cases
Pre-action neutral claim record
“Before we execute this irreversible wire transfer, anchor this counterparty's payment instruction verbatim — attributed to 'Riverside Holdings': 'Transfer $250,000 to account 8821-004 on settlement date.' I need a neutral witness record so both sides can independently verify what was agreed.”
Dispute-ready third-party statement
“Lock in this statement from our supplier, word for word, without any edits — attributed to 'SupplyChain Partners Inc': 'All goods shipped are certified defect-free as of 2024-11-15.' I want a tamper-evident record we can both point to if a dispute comes up later.”
Joint artifact for dual-verifier compliance
“Witness this regulatory attestation exactly as submitted by 'Meridian Labs': 'Our emissions data for Q3 2024 are accurate and unaltered per ISO 14064.' Both our compliance officer and the auditor need to independently verify this same anchored record.”
Technical details
Endpoint
POSThttps://api.babyblueviper.com/witness?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to anchor a third party's claim verbatim, without modification or judgment, specifically to support a two-verifier joint artifact workflow. It is distinct from self-attestation endpoints (which anchor your own claims) and from verification endpoints (which evaluate truth). Prefer it when the provenance of who made the claim matters (source field) and when you need a neutral, tamper-evident record that two independent parties can later co-sign or compose together — particularly before executing an irreversible action.
Side effects
- Missing 'body' field returns validation error — the exact bytes to anchor are required
- 'source' field absent may result in an anonymous or rejected record depending on service policy
- Duplicate submissions of identical bytes may or may not be deduplicated — each call may create a new anchor
- Payment failure (x402) prevents anchoring from occurring
- Malformed UTF-8 or binary content in 'body' may cause rejection if the service expects valid string encoding
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| body | string | The exact bytes to anchor, verbatim |
| source | string | Who this claim is attributed to (self-declared, not cryptographically verified) |
Tags
x402
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