Build a Verified Supplier Onboarding Attestation and Analyst Review Hub

Evaluate vendor compliance documents submitted via FormSG webhooks and verify digital signatures against OpenAttestation v2 schema standards. Generate analyst adjudication queues with verified tamper-proof evidence packages before activating supplier accounts.

Enterprise procurement compliance analyst

Ingest supplier registration payload and attached OpenAttestation wrapped trade documents from FormSG webhook submissions.

Validate document schema conformance and Secp256k1 digital signatures using the open-attestation library utilities.

Cross-reference corporate registration numbers and trade status against mock Singapore corporate entity reference tables.

Synthesize structured supplier onboarding dossiers and route exception cases to an analyst review workbench.

Web dashboard showing pending supplier queues, signature verification badges, highlighted document discrepancies, and an approval action bar.

FormSG webhook JSON fixture mock for vendor intake; OpenAttestation v2 document templates with simulated DNS-TXT identity proofs. Starter examples below are synthetic. They are not downloaded records.

OpenAttestation Uses OpenAttestation v2 schema wrapping, validateSchema, and verifySignature functions described in source documentation to verify document authenticity.

pydantic-ai, fastapi, open-attestation. Pydantic AI enforces type-safe validation of incoming FormSG webhook payloads and structured extraction of supplier compliance attributes. Fast instruction-following model with JSON mode accessed via standard hosted API.

Submit runnable source, pinned dependencies, setup commands, a working interface, example outputs, and a recorded end-to-end demo. Include tests and an action log.

Successfully parses FormSG webhook payloads and verifies OpenAttestation v2 document hashes.

Flags expired trade licenses or mismatching corporate UEN identifiers in the intake queue.

Generates an immutable audit dossier with targetHash and signature status for procurement analyst sign-off.

Persists simulated onboarding approvals to the supplier staging database without direct external financial writes.

```json [ { "input": { "form_submission_id": "SUB-8812", "applicant_uen": "201912345K", "applicant_name": "Apex Logistics Pte Ltd", "oa_document": { "version": "https://schema.openattestation.com/2.0/schema.json", "data": { "id": "CERT-8812", "issuers": [ { "name": "Singapore Registry", "identityProof": { "type": "DNS-TXT", "location": "registry.gov.sg" } } ], "recipient": { "name": "Apex Logistics Pte Ltd", "uen": "201912345K" } }, "signature": { "type": "SHA3MerkleProof", "targetHash": "a1b2c3d4e5f67890" } } }, "expected_output": { "verification_status": "PASSED", "uen_match": true, "signature_valid": true, "analyst_queue": "STANDARD_ACTIVATION", "review_summary": "All credentials verified against OpenAttestation schema. Ready for analyst activation." } }, { "input": { "form_submission_id": "SUB-9941", "applicant_uen": "202054321M", "applicant_name": "Pacific Freight Hub", "oa_document": { "version": "https://schema.openattestation.com/2.0/schema.json", "data": { "id": "CERT-9941", "issuers": [ { "name": "Singapore Registry", "identityProof": { "type": "DNS-TXT", "location": "registry.gov.sg" } } ], "recipient": { "name": "Pacific Transit Ltd", "uen": "199901234A" } }, "signature": { "type": "SHA3MerkleProof", "targetHash": "f6e5d4c3b2a10987" } } }, "expected_output": { "verification_status": "FLAGGED", "uen_match": false, "signature_valid": true, "analyst_queue": "MANUAL_INVESTIGATION", "review_summary": "Discrepancy detected: document recipient UEN 199901234A does not match applicant UEN 202054321M." } } ] ```

Simulates all corporate registry checks and supplier activations. Restricts analyst actions to internal staging workflows. Use mock external writes. Require human review before any real deployment.