Public · Ed25519-signed · Hash-chained

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

Step 1

Artifact certified

A dataset or AI artifact is cryptographically certified and registered in the artifact registry.

Step 2

Artifact used

A model or workflow consumes the certified artifact to produce a decision or output.

Step 3

Decision logged

The operator logs the decision via POST /v1/decisions, optionally referencing the certificate ID.

Step 4

Published here

Records with public_mode=true are Ed25519-signed, chain-linked, and appear in this log.

Live public records· showing 1–25 of 7,916

Decision	Outcome	Certificate	Integrity	Chain hash	Timestamp
dataset certified bb8ee665-4401-4a47-a819-2e352d016301 certification_requested	ISSUED Dataset certification issued by CertifiedData.	⬡46fad60b-bed…	✓ verified	27ccd510f562be99…	Aug 26, 2026, 07:22 PM UTC
dataset certified 8d67d8c2-1591-467d-bbe9-dfa22e470000 certification_requested	ISSUED Dataset certification issued by CertifiedData.	⬡c89eb283-09c…	✓ verified	f606685b4468f104…	Aug 26, 2026, 07:22 PM UTC
dataset generated 7f162db7-5f6f-4974-934c-9cf5a23aac5b synthetic_generation_completed	completed Synthetic dataset generated: 5,000 rows via light engine (insurance_risk).	—	✓ verified	d0c0bfd6c6afeceb…	Aug 26, 2026, 06:15 PM UTC
dataset certified 830f2f76-8d97-4cd2-82fc-24cb9cc8f51e free_tier_auto_certified	ISSUED Dataset certified: 50,000 row loan_applications artifact.	⬡0e4ee7d7-c17…	✓ verified	d316bff0bd4c2873…	Aug 26, 2026, 06:15 PM UTC
dataset generated c00de7a0-b36a-46da-a6e7-ea7c4b4100dd synthetic_generation_completed	completed Synthetic dataset generated: 50,000 rows via light engine (loan_applications).	⬡0e4ee7d7-c17…	✓ verified	e99938df2689e931…	Aug 26, 2026, 06:15 PM UTC
dataset generated 0e753438-95b9-410d-9bcc-ea56b5ea6bbb synthetic_generation_completed	completed Synthetic dataset generated: 100,000 rows via light engine (clinical_trials).	—	✓ verified	9f773980ec57115e…	Aug 26, 2026, 06:15 PM UTC
dataset certified c0c66a2b-da1e-44c2-9f50-0249a53878a2 free_tier_auto_certified	ISSUED Dataset certified: 25,000 row insurance_risk artifact.	⬡c39e9987-8e2…	✓ verified	6a7a36902da0cea4…	Aug 26, 2026, 06:15 PM UTC
dataset generated 247a7a01-d9b1-424c-8b34-66c2d8b629b6 synthetic_generation_completed	completed Synthetic dataset generated: 25,000 rows via light engine (insurance_risk).	⬡c39e9987-8e2…	✓ verified	ca9d144dfcfd7f88…	Aug 26, 2026, 06:15 PM UTC
dataset generated 67f35c9b-c650-4be0-abac-9a3265d83f2f synthetic_generation_completed	completed Synthetic dataset generated: 500 rows via gaussian engine (financial_transactions).	—	✓ verified	0ad92348e8a8ce04…	Aug 26, 2026, 11:51 AM UTC
dataset generated 33472e11-911d-47f5-a2da-a2d3e70b8a9f synthetic_generation_completed	completed Synthetic dataset generated: 500 rows via light engine (clinical_trials).	—	✓ verified	8b714932e755bd75…	Aug 26, 2026, 11:51 AM UTC
dataset certified dce96b7a-1e20-4734-8473-247ba46887ff free_tier_auto_certified	ISSUED Dataset certified: 500 row loan_applications artifact.	⬡6a18314d-0cb…	✓ verified	2fa07cc9a893d134…	Aug 26, 2026, 11:51 AM UTC
dataset generated 8ec15a09-d422-4ec0-8523-dcaf38f99df8 synthetic_generation_completed	completed Synthetic dataset generated: 500 rows via light engine (loan_applications).	⬡6a18314d-0cb…	✓ verified	b0f8f1e41012c095…	Aug 26, 2026, 11:51 AM UTC
dataset generated cb8e31c3-6459-4ad1-ad39-d043f05bb78c synthetic_generation_completed	completed Synthetic dataset generated: 1,000 rows via light engine (loan_applications).	—	✓ verified	bbbcf82b5ca90313…	Aug 26, 2026, 11:51 AM UTC
dataset certified e6f9a85c-364c-4f13-8d3d-bf65f00a1fc8 enterprise_auto_certified	ISSUED Dataset certified: 100,000 row loan_applications artifact.	⬡26f4e4d6-58e…	✓ verified	0a5154488fa19270…	Aug 26, 2026, 11:51 AM UTC
dataset generated dd80c737-9c16-4334-b480-f2ccccdb04bb synthetic_generation_completed	completed Synthetic dataset generated: 100,000 rows via ctgan engine (loan_applications).	⬡26f4e4d6-58e…	✓ verified	1b014c917196155d…	Aug 26, 2026, 11:51 AM UTC
dataset certified 1547308a-cae7-40b5-ac5a-4135ab3b917b certification_requested	ISSUED Dataset certification issued by CertifiedData.	⬡a1c14a52-40c…	✓ verified	d2e3b89d31bb972d…	Aug 26, 2026, 09:46 AM UTC
dataset generated 57333350-3774-476a-9c15-643f48f9fca9 synthetic_generation_completed	completed Synthetic dataset generated: 25,000 rows via light engine (customer_demographics).	—	✓ verified	8f54764cd699282d…	Aug 26, 2026, 08:29 AM UTC
dataset generated 9f1ffec4-87cf-41df-8d67-4805b141ad13 synthetic_generation_completed	completed Synthetic dataset generated: 100,000 rows via light engine (healthcare_claims).	—	✓ verified	c17ae8e8b2ac974b…	Aug 26, 2026, 08:29 AM UTC
dataset certified e8197a0d-c94f-4384-88ca-033e35bbdcc1 free_tier_auto_certified	ISSUED Dataset certified: 2,500 row healthcare_claims artifact.	⬡67fb75d5-126…	✓ verified	253a5e7ab2ba30c6…	Aug 26, 2026, 08:29 AM UTC
dataset generated 25626794-44b4-45cd-ab5f-7962812f5060 synthetic_generation_completed	completed Synthetic dataset generated: 2,500 rows via light engine (healthcare_claims).	⬡67fb75d5-126…	✓ verified	fb12dce780c341ba…	Aug 26, 2026, 08:29 AM UTC
dataset generated 478e4492-17a5-4470-8bd4-36f54cf3cd23 synthetic_generation_completed	completed Synthetic dataset generated: 5,000 rows via light engine (loan_applications).	—	✓ verified	04e47468c0d8fbe0…	Aug 26, 2026, 08:29 AM UTC
dataset generated e7f398cb-8d99-44c5-b436-c64acedacdeb synthetic_generation_completed	completed Synthetic dataset generated: 25,000 rows via gaussian engine (loan_applications).	—	✓ verified	5181826f1d0e07a9…	Aug 26, 2026, 08:29 AM UTC
dataset generated 1fb14d1d-982d-4dbe-8116-cb97144b3532 synthetic_generation_completed	completed Synthetic dataset generated: 2,500 rows via light engine (healthcare_claims).	—	✓ verified	68b86ca37723bef2…	Aug 26, 2026, 08:29 AM UTC
dataset certified ffa3ca10-8a80-49da-94ee-4ad01e012161 free_tier_auto_certified	ISSUED Dataset certified: 100,000 row loan_applications artifact.	⬡8b7b1ada-da4…	✓ verified	a1fa8bba2ca21c6c…	Aug 26, 2026, 05:07 AM UTC
dataset generated 70a41e9b-2d72-4b01-9d87-e0ad56862c55 synthetic_generation_completed	completed Synthetic dataset generated: 100,000 rows via light engine (loan_applications).	⬡8b7b1ada-da4…	✓ verified	3b481f7044b61e5d…	Aug 26, 2026, 05:07 AM UTC

Entries 1–25

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).

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.