Who checks this log
A cosignature means the witness checked that this checkpoint extends, without a fork or a rollback, every earlier checkpoint of this log it has seen. It is not an endorsement of any record, publisher or claim.
aisourceoftruth.com/logaisourceoftruth.com/log+3b162de5+ASW799lCqbFOP7rojZjZlbDqBarpu1gimAMGcPaf2t8rhttps://aisourceoftruth.com/log/ (C2SP tlog-tiles: checkpoint, tile/<L>/<N>, tile/entries/<N>; each entry is a record digest)uses: aisourceoftruth/monitor@v1 (source packages/monitor/monitor.mjs, no dependencies): checkpoint signatures against /log/policy, the witness quorum, consistency over time from the tiles, publishers' key events and this witness's cosignature log; public routes only, no tokenThe published witness policy
# C2SP tlog-policy (https://c2sp.org/tlog-policy) for the AI Source of Truth log. # A checkpoint is valid when the log key below signed it and the quorum co-signed it. # Only independent witnesses are listed. A witness run by the registry's operator never counts. log aisourceoftruth.com/log+3b162de5+ASW799lCqbFOP7rojZjZlbDqBarpu1gimAMGcPaf2t8r https://aisourceoftruth.com # No independent witness co-signs this log yet. The target quorum is 2. quorum none
Served at /log/policy. 0 of 2 required independent cosignatures on the latest checkpoint (tree size 24), not met.
Key custody
The key that signs model receipts
signature: nullcurl -s https://aisourceoftruth.com/witness?format=json > witness.json && node dist/src/model/cli.js verify-receipt receipt.json --witness witness.json [--checkpoint checkpoint.txt] [--dumps dumps/<YYYY-MM-DD>]No outside security review or legal opinion has been published yet. When one is, its report is a record in this log, listed here with its reviewer, date and findings.
The scope covers the ingest path, the log and checkpoint signing, this witness and key custody. Every review is listed on /about.
No witnesses are configured yet. Until then the log is checked by its public git copy and its RFC 3161 timestamps.
A witness run by the registry's own operator is marked independent: false and never counted toward independence.
Logs we witness
This registry also runs a witness for other transparency logs, under the C2SP tlog-witness protocol. A cosignature from this witness means it checked that the checkpoint extends, without a fork or a rollback, every earlier checkpoint of that log it co-signed. It is consistency, not endorsement: it says nothing about any entry in the log, its publisher or its claims.
aisourceoftruth.com/witnesshttps://aisourceoftruth.com/add-checkpointhttps://aisourceoftruth.com/witnessNo logs are configured yet.
Operated by PromptReports LLC, which also operates this registry. A log run by the same owner gains no independence from this witness.
aisourceoftruth.com/witness/cosignaturese3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855# Did this witness ever sign two different roots at one size for a log? curl -s 'https://aisourceoftruth.com/witness/cosignatures?origin=<log origin>&size=<tree size>'
GET /witness/cosignatures?origin=<log origin>&size=<tree size> returns every cosignature this witness issued at that size. More than one distinct root_hash is proof of equivocation.
Every cosignature this witness issues is logged, so anyone can catch it signing two different trees at one size.
Published, not promised
No uptime history is published yet, so no uptime is shown. See status.
Witness tiers
| TIER | PRICE | UP TO |
|---|---|---|
| Witness Community | $0 | 1,440 qpd |
| Witness Log Operator PAID PLAN | $49 / month | 86,400 qpd |
| Witness High Volume PAID PLAN | $399 / month | 864,000 qpd |
| Witness Enterprise PAID PLAN | by contract | by contract |
Prices are approved; on sale. A plan never changes what the witness checks or signs. Each log on a paid tier shows "paid plan" on /witness. See pricing.
Add your log
- Publish C2SP checkpoints for your log with a stable origin and an Ed25519 or ML-DSA-44 key.
- Get configured: through a witness list this witness syncs, or by the operator by hand. Every addition is on the public admin ledger (/admin-ledger).
- Send your checkpoints to POST https://aisourceoftruth.com/add-checkpoint (C2SP tlog-witness). The first cosignature fixes the size this witness holds your log to.
- Need more requests per day? A witness plan raises your log's limits; it never changes what is checked or signed.