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Council of AI — OTS Proofs Population Slice
x402
Council of AI — OTS Proofs Population Slice is a paid API for AI agents from councilof.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).
Returns the current count and verifiable OpenTimestamps (.ots) proof population data with signed attestation from the Council of AI measurement ledger.
Price / call$0.01
Success—
StatusUnknown
How this service works
We measure how AI systems behave against frozen, published tests and publish checkable evidence. Issued measurement cards are signed; unsigned supporting runs are labelled. Read the live board and corrections ledger.
Output
Returns a JSON object containing: the total count of published .ots proofs that parse as valid proofs (n), a slice identifier (id: 'ots-proofs'), the raw proof rows/artifact bytes, an as-of ISO timestamp, measurement state ('MEASURED'), settlement metadata (payer, network, transaction), source manifest path, and a full attestation block including schema URL, SHA-256 hash, payload hash, surface label, and an optional ed25519 signature indicating whether the card is officially signed.
Example use cases
Audit AI benchmark proof count
“How many published OpenTimestamps proofs does Council of AI currently have, and can you get me the signed attestation to verify it independently?”
Verify measurement ledger integrity
“Fetch the current OTS proof population slice from Council of AI, including the ed25519 signature and SHA-256 hash, so I can confirm the ledger hasn't been tampered with.”
Monitor AI evaluation transparency
“Check the Council of AI measurement board and tell me the current count of valid .ots proofs and when the data was last recorded.”
Technical details
Endpoint
GEThttps://councilof.ai/api/pop/ots-proofs?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a cryptographically attested, independently verifiable count of OpenTimestamps proofs published by Council of AI — specifically when auditability, signed evidence, and ledger integrity matter. Prefer it over generic AI leaderboard APIs when you need tamper-evident proof of measurement activity, not just scores. Use it when building compliance workflows, transparency dashboards, or automated audits that require ed25519-signed attestation and SHA-256 checksums.
Side effects
- Payment not included or insufficient (x402 payment required — must send 0.01 USDC)
- Unsigned runs returned with null sig_ed25519 — attestation present but not officially signed
- Source manifest /interop/ots/manifest.json unavailable or stale
- Malformed attestation schema causing verification failure
- Network or upstream ledger unavailability returning non-200 status
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"n": 643,
"id": "ots-proofs",
"kind": "slice",
"rows": "<the population rows / artifact bytes, verbatim>",
"as_of": "2026-09-27T10:37:43Z",
"state": "MEASURED",
"n_unit": "published .ots proofs that parse as proofs",
"schema": "csoai.population-door/0.1",
"settle": {
"payer": "<0x… or null>",
"network": "<caip2 or null>",
"transaction": "<0x… or null>"
},
"source": [
"/interop/ots/manifest.json"
],
"attestation": {
"schema": "https://councilof.ai/schema/card-v0.json",
"sha256": "<hex>",
"payload": {
"kind": "csoai.population.slice/0.1",
"rows_sha256": "<hex>"
},
"surface": "population.slice",
"sig_ed25519": "<hex or null>"
}
}
}Tags
x402
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