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

Decision	Outcome	Certificate	Integrity	Chain hash	Timestamp
dataset certified 3e9ce466-2ac9-42b6-8aef-0c75bd0f6f85 enterprise_auto_certified	ISSUED Dataset certified: 5,000 row customer_demographics artifact.	⬡80a57c19-8ff…	✓ verified	79980679bc4613a8…	Apr 12, 2026, 05:23 PM UTC
dataset generated 55958305-762f-4ec6-b783-789664954446 synthetic_generation_completed	completed Synthetic dataset generated: 5,000 rows via gaussian engine (customer_demographics).	⬡80a57c19-8ff…	✓ verified	4a9c644d1e3e91c4…	Apr 12, 2026, 05:23 PM UTC
dataset generated 1fbf3a8c-e9e6-4f73-8d14-529a69b98215 synthetic_generation_completed	completed Synthetic dataset generated: 500 rows via light engine (ecommerce_orders).	—	✓ verified	07965dd563faaf13…	Apr 12, 2026, 05:23 PM UTC
dataset certified f199f8d1-5676-4dd8-bfea-096f833ec594 free_tier_auto_certified	ISSUED Dataset certified: 100,000 row financial_transactions artifact.	⬡2401b08c-d94…	✓ verified	66528ffd01969c5e…	Apr 12, 2026, 05:23 PM UTC
dataset generated 87a95fa4-9a59-4c69-b83b-9eaf65e4f808 synthetic_generation_completed	completed Synthetic dataset generated: 100,000 rows via light engine (financial_transactions).	⬡2401b08c-d94…	✓ verified	1bb50060048b8e2d…	Apr 12, 2026, 05:22 PM UTC
dataset generated 03426e89-7f1c-42a3-a085-8e023db0aaf6 synthetic_generation_completed	completed Synthetic dataset generated: 1,000 rows via light engine (customer_demographics).	—	✓ verified	f8d3a77327a278a8…	Apr 12, 2026, 05:22 PM UTC
dataset certified c09ae65d-bdd5-4afd-8d15-d15c78d7ac69 pro_tier_certification	ISSUED Dataset certified: 5,000 row employee_records artifact.	⬡a259bfec-974…	✓ verified	01ac9b76fe41ae73…	Apr 12, 2026, 04:49 PM UTC
dataset generated 1ee4699d-8330-4ba5-bc5c-63598ba8c843 synthetic_generation_completed	completed Synthetic dataset generated: 5,000 rows via gaussian engine (employee_records).	⬡a259bfec-974…	✓ verified	80a869829c687c03…	Apr 12, 2026, 04:49 PM UTC
dataset generated 2e479d8d-7faf-4d2f-940b-ed0964389687 synthetic_generation_completed	completed Synthetic dataset generated: 2,500 rows via light engine (loan_applications).	—	✓ verified	a37734cf0246a812…	Apr 12, 2026, 04:49 PM UTC
dataset certified 2e247698-cdb3-4e23-89db-8e148a5b236e free_tier_auto_certified	ISSUED Dataset certified: 2,500 row customer_demographics artifact.	⬡083240f9-98a…	✓ verified	c357247e02a87ff0…	Apr 12, 2026, 04:49 PM UTC
dataset generated 0111890c-f118-40fb-8a57-32d066e9dca7 synthetic_generation_completed	completed Synthetic dataset generated: 2,500 rows via light engine (customer_demographics).	⬡083240f9-98a…	✓ verified	a8c51d7fd98bf18d…	Apr 12, 2026, 04:49 PM UTC
dataset generated 302fe2c4-743e-48d9-8cea-4fc43ccc588d synthetic_generation_completed	completed Synthetic dataset generated: 1,000 rows via light engine (ecommerce_orders).	—	✓ verified	a6d2310f9c2e1260…	Apr 12, 2026, 04:49 PM UTC
dataset certified 1769fcd5-6049-4cc6-acc9-93a5b6a1160a team_tier_certification	ISSUED Dataset certified: 2,500 row ecommerce_orders artifact.	⬡165bfa38-100…	✓ verified	f542d741f2b9469b…	Apr 12, 2026, 04:49 PM UTC
dataset generated d5d4a3ac-1976-4bb9-a065-ea1c8ccaa566 synthetic_generation_completed	completed Synthetic dataset generated: 2,500 rows via gaussian engine (ecommerce_orders).	⬡165bfa38-100…	✓ verified	7264825694b70424…	Apr 12, 2026, 04:49 PM UTC
dataset generated 904c562b-1dba-4bc5-97d3-0edd992d67ef synthetic_generation_completed	completed Synthetic dataset generated: 10,000 rows via light engine (customer_demographics).	—	✓ verified	99d80ebb8ca5e352…	Apr 12, 2026, 04:48 PM UTC
regulatory screening 0d5f627e-4acf-4727-9b10-4862d2e5062e pep_indicator_detectedidentity_verifiedadverse_media_none	CLEARED No matches on watchlists or sanctions lists. Identity verification complete.	—	✓ verified	6fd66ee46c60e980…	Apr 12, 2026, 03:22 PM UTC
transaction review 9235d647-8b4e-4577-9cef-02dc8aa979e0 velocity_within_thresholdmerchant_category_normalvelocity_threshold_exceeded	CLEARED Transaction flagged: multiple risk indicators exceeded policy thresholds.	—	✓ verified	d7e17c60e7f908f2…	Apr 12, 2026, 03:22 PM UTC
credit risk assessment c1710c3e-307d-42cd-b2a2-3cdfeb9c8ee3 thin_credit_fileincome_verifieddebt_ratio_within_threshold	DECLINED All primary risk indicators within policy thresholds. Score above approval floor.	—	✓ verified	3bedc278a33c6bb6…	Apr 12, 2026, 03:22 PM UTC
transaction review 07d4c53c-7e42-4c8f-a797-6e80610cc238 device_recognizedvelocity_within_thresholdamount_within_daily_limit	CLEARED Transaction flagged: multiple risk indicators exceeded policy thresholds.	—	✓ verified	f662b2da03c5ec32…	Apr 12, 2026, 03:22 PM UTC
loan underwriting 0fa530b4-d69c-4e95-b678-5b13a771a428 credit_score_qualifyingdti_acceptablereserves_adequate	APPROVED Application meets standard underwriting criteria. Conditional on document verification.	—	✓ verified	c11b3a4acc4291c6…	Apr 12, 2026, 03:22 PM UTC
content moderation 12cb5546-c8d6-45c7-bcf2-0b03b8ca853d no_policy_violation_detectedsafe_for_all_audiencesconfidence_above_threshold	ALLOWED Context-aware analysis completed. No action required.	—	✓ verified	3c1156f4e06a1416…	Apr 12, 2026, 03:22 PM UTC
dataset certified 291c2749-1c5c-4a29-bd97-669a5f9d326d enterprise_auto_certified	ISSUED Dataset certified: 25,000 row financial_transactions artifact.	⬡846a8d01-360…	✓ verified	77b81bacb1b0b9ec…	Apr 12, 2026, 02:31 PM UTC
dataset generated 4da23c19-efa5-44ad-ba55-c16849c40128 synthetic_generation_completed	completed Synthetic dataset generated: 25,000 rows via ctgan engine (financial_transactions).	⬡846a8d01-360…	✓ verified	b1b21de958e86915…	Apr 12, 2026, 02:31 PM UTC
dataset certified 0f18697c-37ba-449d-8885-903f32bfed2f free_tier_auto_certified	ISSUED Dataset certified: 2,500 row insurance_risk artifact.	⬡1da2cc4e-c58…	✓ verified	86288f1ebcdd0dba…	Apr 12, 2026, 02:31 PM UTC
dataset generated f091bb78-05b0-48b4-b5b8-47a20e672213 synthetic_generation_completed	completed Synthetic dataset generated: 2,500 rows via light engine (insurance_risk).	⬡1da2cc4e-c58…	✓ verified	2f26e85f714613aa…	Apr 12, 2026, 02:31 PM 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.