Decision Log
The public record of AI decisions made against CertifiedData certified artifacts. Each entry is cryptographically signed, appended to an append-only log, and independently verifiable without an account.
This page shows decisions logged with public_mode=true. Private records are not published. Machine-readable: GET /api/decision-log
How decision records reach this log
Artifact certified
A dataset or AI artifact is cryptographically certified and registered in the artifact registry.
Artifact used
A model or workflow consumes the certified artifact to produce a decision or output.
Decision logged
The operator logs the decision via POST /v1/decisions, optionally referencing the certificate ID.
Published here
Records with public_mode=true are Ed25519-signed, chain-linked, and appear in this log.
Live public records· showing 1–25 of 4,306
| Decision | Timestamp |
|---|---|
dataset certified a1dbe413-4b2b-4c6b-bc8a-ff74c1d11e83 enterprise_auto_certified | May 28, 2026, 11:47 AM UTC |
dataset generated ff4cca94-f98f-41ed-8bda-b7f53e1e0ebd synthetic_generation_completed | May 28, 2026, 11:47 AM UTC |
dataset generated 8a498820-d8e0-456e-b22d-14f5ce419a7c synthetic_generation_completed | May 28, 2026, 11:47 AM UTC |
dataset generated 4b8582ee-881e-481c-8baa-81a0eb966215 synthetic_generation_completed | May 28, 2026, 05:46 AM UTC |
dataset generated ff865bb1-15fd-41f0-bc81-35bff7072e42 synthetic_generation_completed | May 28, 2026, 05:46 AM UTC |
dataset certified bcf937e6-260e-4cc2-8178-2d6a2309634a team_tier_certification | May 27, 2026, 11:37 PM UTC |
dataset generated 2965f417-bc58-4d86-9f03-55adf36429b6 synthetic_generation_completed | May 27, 2026, 11:37 PM UTC |
dataset generated eac36e15-bd53-4f54-8485-d9123156d1ad synthetic_generation_completed | May 27, 2026, 11:37 PM UTC |
dataset generated 99c9ab0e-7fb5-4d7f-81e9-b37c938f8519 synthetic_generation_completed | May 27, 2026, 11:37 PM UTC |
dataset certified 6b6ef8d2-4108-4942-8c07-e2d7d7a6391d free_tier_auto_certified | May 27, 2026, 11:37 PM UTC |
dataset generated 5e4f40a7-f58d-45cb-ac33-706a1d76d018 synthetic_generation_completed | May 27, 2026, 11:37 PM UTC |
dataset generated 7e78037b-3435-4992-8fa8-8f8bdd34f347 synthetic_generation_completed | May 27, 2026, 11:37 PM UTC |
dataset certified 03892942-7dae-4ac6-a4bb-23d4a6b18ded enterprise_auto_certified | May 27, 2026, 07:04 PM UTC |
dataset generated 9f4eae1d-1d5e-4e88-8fd3-13870234d004 synthetic_generation_completed | May 27, 2026, 07:04 PM UTC |
dataset certified 47d58c01-f497-4007-8a04-ca17ce20816a enterprise_auto_certified | May 27, 2026, 07:04 PM UTC |
dataset generated 74efbc3f-6df8-41fb-9d77-55b18e79cba9 synthetic_generation_completed | May 27, 2026, 07:04 PM UTC |
dataset certified b823f3b6-249d-490d-81ea-06764bab2e29 enterprise_auto_certified | May 27, 2026, 07:04 PM UTC |
dataset generated 28027bfe-ca4e-41e2-b279-c6d1d0e2c7d2 synthetic_generation_completed | May 27, 2026, 07:04 PM UTC |
dataset generated 7d3076e1-a15c-4774-ad6f-52e739ac291a synthetic_generation_completed | May 27, 2026, 07:04 PM UTC |
dataset generated 133f65c3-44ca-41ee-b72d-2ac2e43f07f7 synthetic_generation_completed | May 27, 2026, 07:04 PM UTC |
dataset generated 1a99cebf-cfe6-432b-8d79-5b409dadda91 synthetic_generation_completed | May 27, 2026, 03:39 PM UTC |
dataset certified 2dc6f165-d7b8-4759-a242-e11a9346aa54 team_tier_certification | May 27, 2026, 03:39 PM UTC |
dataset generated 88d1540e-686a-4ddc-89c8-f335471705e4 synthetic_generation_completed | May 27, 2026, 03:39 PM UTC |
dataset certified 1491bdb6-4519-4f20-8aa9-0bd3a4bc0c36 enterprise_auto_certified | May 27, 2026, 09:06 AM UTC |
dataset generated 7d5a07ab-239b-4e9b-a234-863d12a9f06c synthetic_generation_completed | May 27, 2026, 09:06 AM UTC |
Record structure and API
Public API endpoints
GET /api/decision-log
?limit=25&offset=0
GET /api/decision-log/latest
GET /api/decision-log/:id
GET /api/decision-log/:id/verify
GET /.well-known/decision-signing-keys.json
Response fields (public records)
decision_id — unique identifier
decision_label — event type
selected_option — outcome
certificate_id — linked artifact (optional)
public_hash — SHA-256 of this record
previous_public_hash — chain link
signature_alg — Ed25519
integrity_status — verified | pending
timestamp — ISO 8601
Integrity model
Each public record is signed with Ed25519 using the key identified in /.well-known/decision-signing-keys.json.
The previous_public_hash field links each record to the prior entry. Any modification to a prior record changes its hash and breaks the chain.
Signature verification is available at /api/decision-log/:id/verify without authentication.
Current implementation scope
Public decision records are available via the API and on this page. Records are optionally linked to certified artifact IDs.
Ed25519 signing and SHA-256 chain linking are active for all public records. The /verify endpoint performs live signature checks.
Only records explicitly submitted with public_mode=true appear here. Private records are not published.
Log a decision
Use POST /v1/decisions with an authenticated API key. Set public_mode: true to publish the record to this log. Reference a certificate_id to link the decision to a certified artifact.
POST /v1/decisions
Authorization: Bearer <api_key>
{
"decision_label": "loan_approved",
"selected_option": "approved",
"public_mode": true,
"artifact_reference": {
"certificate_id": "cert_01j9k..."
}
}Questions
What is a decision record?
A decision record is a structured log entry that captures an AI system action: the decision label, selected outcome, input context, model version, policy version, and timestamp. Records submitted with public_mode=true are signed with Ed25519, assigned a SHA-256 hash, and appended to this public log.
How is the decision log different from the artifact registry?
The artifact registry records certified datasets and AI artifacts — what was built and signed. The decision log records how those artifacts were used downstream — decisions made by systems that consumed certified data. Certification is about provenance; decision logging is about use.
How does decision lineage connect to artifact certification?
Each decision record can reference a certificate_id, linking the decision to the specific certified artifact used. This creates a traceable chain: certified dataset → model trained on it → decision made by that model. The chain allows auditors to follow a decision backwards to its data origin.
Can decision records be independently verified?
Each record includes an Ed25519 signature and a chain hash linking it to the prior entry. The signing public key is available at /.well-known/decision-signing-keys.json. Any party with the record payload and the public key can verify the signature without contacting CertifiedData.
Are all AI system decisions published here?
No. Only decisions logged via POST /v1/decisions with public_mode=true appear in this log. Private decision records are retained but not published. Operators choose what to make public at the record level.
Why does decision logging matter for governance?
AI governance requires verifiable evidence of how systems behave — not just what data they were trained on. Decision logs provide timestamped, cryptographically signed records of individual AI actions, satisfying audit and traceability requirements for frameworks like the EU AI Act (Articles 12 and 19).
Related
AI Decision Logging
What decision logging is, how it supports EU AI Act compliance, and how it differs from general audit logs.
AI Decision Lineage
The traceable chain from certified dataset to model to downstream decisions — and why it matters for governance.
Artifact Registry
The public index of certified AI artifacts. Decision records can reference any registry entry by certificate ID.
Transparency Log
Browse the append-only public audit trail for certificates, datasets, and decision records in one place.
Verify a Certificate
Independently verify any artifact certificate using its SHA-256 fingerprint and Ed25519 signature.
Verification Docs
How to programmatically verify certificates and decision records using standard cryptography libraries.
Synthetic Data Certification
Certify the synthetic datasets referenced in decision records. Each certificate ID links a decision to its verified artifact.
Payment Decision Log
AI agent spend authorization decisions — every payment authorized, blocked, or escalated, with policy hash and reason codes.