Build a Verified Origin Certificate Verification and Duty Expiry Reconciler
Audit ASEAN-Singapore preferential tariff certificates against OpenAttestation verification rules. Flag credential expiries and calculate mock customs duty liabilities.
What you are building
The core problem, expected build, and operating context for this challenge.
Audit ASEAN-Singapore preferential tariff certificates against OpenAttestation verification rules. Flag credential expiries and calculate mock customs duty liabilities.
Cross-Border Customs Broker
Ingest wrapped electronic Certificates of Origin (e-CO) formatted according to TradeTrust specifications.
Validate document authenticity and cryptographic signature status using OpenAttestation core functions.
Verify certificate validity dates against planned customs clearance and free trade agreement expiration dates.
Calculate potential duty impact if origin credentials expire and compile a customs audit file.
Customs tariff dashboard displaying certificate hash trees, HS code matches, and duty liability calculations.
Normalized JSON documents mimicking ASEAN Trade in Goods Agreement (ATIGA) Form D certificates wrapped with OpenAttestation. Starter examples below are synthetic. They are not downloaded records.
TradeTrust Leverages TradeTrust website and document-store integration paradigms to verify electronic certificates of origin against Sepolia testnet parameters.
langgraph, ethers, typescript. LangGraph manages cyclic verification workflows, branching between valid signatures, expired certificates, and duty recalculations. API-hosted model for analyzing trade agreement rules and synthesizing non-technical customs broker explanations.
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.
Verify TradeTrust cryptographic signatures and merkle root inclusion.
Flag expired certificates of origin prior to import permit lodgement.
Compute preferential versus standard non-preferential duty deltas accurately.
Generate a structured customs reconciliation summary for broker sign-off.
```json [ { "input": { "declaration_id": "DEC-SG-CUSTOMS-5501", "hs_code": "8471.30.00", "goods_description": "Data processing servers", "customs_value_sgd": 350000, "preferential_rate_percent": 0, "standard_rate_percent": 5, "co_document": { "certificate_number": "MY-SG-2024-8871", "expiry_date": "2025-06-30T00:00:00Z", "signature_valid": true, "merkle_root_published": true }, "declaration_date": "2025-04-12T00:00:00Z" }, "expected_output": { "certificate_status": "VALID_ACTIVE", "preferential_duty_eligible": true, "applied_duty_sgd": 0, "duty_saved_sgd": 17500, "customs_ready": true, "broker_action": "Proceed with zero-tariff FTA import lodgement." } }, { "input": { "declaration_id": "DEC-SG-CUSTOMS-5502", "hs_code": "2208.30.00", "goods_description": "Commercial spirits", "customs_value_sgd": 80000, "preferential_rate_percent": 2, "standard_rate_percent": 10, "co_document": { "certificate_number": "TH-SG-2023-1102", "expiry_date": "2024-12-31T00:00:00Z", "signature_valid": true, "merkle_root_published": true }, "declaration_date": "2025-04-12T00:00:00Z" }, "expected_output": { "certificate_status": "EXPIRED", "preferential_duty_eligible": false, "applied_duty_sgd": 8000, "duty_saved_sgd": 0, "customs_ready": false, "broker_action": "Preferential tariff certificate expired. Hold declaration or lodge under standard MFN duty rate (10%)." } } ] ```
No filings are made to Singapore Customs; all duty rate comparisons and document validations are simulated locally. Use mock external writes. Require human review before any real deployment.
Participation guide
No filings are made to Singapore Customs; all duty rate comparisons and document validations are simulated locally. Use mock external writes and human review.
How work is evaluated
Verify TradeTrust cryptographic signatures and merkle root inclusion. Flag expired certificates of origin prior to import permit lodgement. Compute preferential versus standard non-preferential duty deltas accurately. Generate a structured customs reconciliation summary for broker sign-off.
Runnable source, pinned dependencies, setup commands, working interface, example outputs, recorded demo, tests, and action logs.
Challenge datasets
Public datasets, plus the private datasets you have access to.
How submissions are scored
These dimensions define what the evaluator checks and which criteria separate a passable run from a strong one.
Complete workflow
Ingest wrapped electronic Certificates of Origin (e-CO) formatted according to TradeTrust specifications. Validate document authenticity and cryptographic signature status using OpenAttestation core functions. Verify certificate validity dates against planned customs clearance and free trade agreement expiration dates. Calculate potential duty impact if origin credentials expire and compile a customs audit file.
Missing or incorrect.
Partly complete, with documented gaps.
Complete, with reproducible evidence.
Correctness and evidence
Verify TradeTrust cryptographic signatures and merkle root inclusion. Flag expired certificates of origin prior to import permit lodgement. Compute preferential versus standard non-preferential duty deltas accurately. Generate a structured customs reconciliation summary for broker sign-off.
Missing or incorrect.
Partly complete, with documented gaps.
Complete, with reproducible evidence.
Review interface
Customs tariff dashboard displaying certificate hash trees, HS code matches, and duty liability calculations.
Missing or incorrect.
Partly complete, with documented gaps.
Complete, with reproducible evidence.
Safe execution
No filings are made to Singapore Customs; all duty rate comparisons and document validations are simulated locally.
This dimension contributes its full weight only when the submission satisfies the requirement. Partial credit is not awarded.
What you should walk away with
Ingest wrapped electronic Certificates of Origin (e-CO) formatted according to TradeTrust specifications.
Validate document authenticity and cryptographic signature status using OpenAttestation core functions.
Verify certificate validity dates against planned customs clearance and free trade agreement expiration dates.
Calculate potential duty impact if origin credentials expire and compile a customs audit file.
Reference links and supporting material
Normalized JSON documents mimicking ASEAN Trade in Goods Agreement (ATIGA) Form D certificates wrapped with OpenAttestation. Supplied starter examples are synthetic, not source extracts.
Challenge setup
Configuration summary for this challenge.
Challenge input
Input details are not configured.
LangGraph
Runtime for stateful agent workflows.
Evaluated output
No output checks are configured.
- Ingest wrapped electronic Certificates of Origin (e-CO) formatted according to TradeTrust specifications. V...
- Verify TradeTrust cryptographic signatures and merkle root inclusion. Flag expired certificates of origin p...
- Customs tariff dashboard displaying certificate hash trees, HS code matches, and duty liability calculations.
- 2 public reference cases
- 2 configured tools
Summary shows the first task, up to three tools, and up to three evidence items. Open the technical recipe to view all configured items.
View technical recipe
Configured tools
- LangGraph · Optional
- LangGraph · Optional
Evaluation contract
- Complete workflow · Weight 40
- Correctness and evidence · Weight 30
- Review interface · Weight 20
- Safe execution · Weight 10
Reference cases
- 2 public reference cases
Workflow tasks
No workflow tasks are configured.
Recipe freeze marker
No recipe freeze time is recorded.