Build an Empty Container Repatriation TradeTrust Proof Generator
Reconcile empty shipping container return receipts against carrier leasing ledgers. Wrap verified depot drop-off logs with OpenAttestation to generate immutable cryptographic proofs, preventing erroneous equipment non-return penalties and defending leasing disputes.
What you are building
The core problem, expected build, and operating context for this challenge.
Reconcile empty shipping container return receipts against carrier leasing ledgers. Wrap verified depot drop-off logs with OpenAttestation to generate immutable cryptographic proofs, preventing erroneous equipment non-return penalties and defending leasing disputes.
Depot Operations and Equipment Logistics Manager
Extract empty container yard drop-off timestamps and equipment condition logs from depot feeds.
Reconcile return events against original ocean carrier leasing agreements and free-time deadlines.
Wrap the empty container return receipt using the OpenAttestation schema to produce an immutable cryptographic proof.
Generate a structured penalty defense dossier if carriers erroneously invoice for unreturned or late equipment.
Depot reconciliation dashboard displaying empty container return deadlines, OpenAttestation drop-off proofs, and automated leasing dispute dossiers.
Mocked ocean carrier leasing ledger datasets paired with simulated container yard drop-off logs in JSON format. Starter examples below are synthetic. They are not downloaded records.
OpenAttestation Uses signDocument and verifySignature from @govtechsg/open-attestation to wrap empty container return events into verifiable records.
mastra-ai, ethers, typescript. Mastra AI orchestrates the multi-step verification between carrier leasing deadlines, depot drop-off data extraction, and OpenAttestation signing. Local or hosted LLM API capable of comparing datetime objects and drafting formal commercial leasing defense summaries based on timestamp proofs.
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.
Parse and extract depot drop-off timestamps and container IDs from incoming yard logs.
Sign and verify wrapped empty container receipts using OpenAttestation Secp256k1VerificationKey2018 utilities.
Detect discrepancies between carrier return deadlines and actual depot drop-off timestamps to validate or invalidate leasing penalties.
Generate an itemized dispute response citing the OpenAttestation receipt hash when erroneous late fees are detected.
```json [ { "input": { "container_number": "MEDU9876543", "carrier_name": "Med Freight Empty Dept", "return_deadline": "2025-04-05T18:00:00Z", "depot_dropoff": { "yard_id": "TUAS-DEPOT-3", "dropoff_time": "2025-04-05T15:00:00Z", "condition": "SOUND" }, "late_fee_per_hour_sgd": 50 }, "expected_output": { "_note": "These are simplified synthetic app records, not complete official schema files.", "return_verified": true, "hours_early": 3, "late_fee_owed_sgd": 0, "oa_receipt_hash": "0x44a19b882fe", "defense_action": "RETURN_VERIFIED: Container dropped at TUAS-DEPOT-3 3 hours before deadline. Receipt wrapped." } }, { "input": { "container_number": "MSKU1122334", "carrier_name": "Maersk Equipment", "return_deadline": "2025-04-02T12:00:00Z", "depot_dropoff": { "yard_id": "JURONG-DEPOT-1", "dropoff_time": "2025-04-02T16:00:00Z", "condition": "SOUND" }, "late_fee_per_hour_sgd": 50 }, "expected_output": { "_note": "These are simplified synthetic app records, not complete official schema files.", "return_verified": true, "hours_late": 4, "late_fee_owed_sgd": 200, "oa_receipt_hash": "0x99a22e811c", "defense_action": "LATE_RETURN: Container dropped 4 hours late. Liability confirmed for SGD 200, no defense generated." } } ] ```
Dispute packets and leasing defenses are advisory documents; no actual funds or legal arbitration notices are transmitted. Use mock external writes. Require human review before any real deployment.
Participation guide
Dispute packets and leasing defenses are advisory documents; no actual funds or legal arbitration notices are transmitted. Use mock external writes and human review.
How work is evaluated
Parse and extract depot drop-off timestamps and container IDs from incoming yard logs. Sign and verify wrapped empty container receipts using OpenAttestation Secp256k1VerificationKey2018 utilities. Detect discrepancies between carrier return deadlines and actual depot drop-off timestamps to validate or invalidate leasing penalties. Generate an itemized dispute response citing the OpenAttestation receipt hash when erroneous late fees are detected.
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
Extract empty container yard drop-off timestamps and equipment condition logs from depot feeds. Reconcile return events against original ocean carrier leasing agreements and free-time deadlines. Wrap the empty container return receipt using the OpenAttestation schema to produce an immutable cryptographic proof. Generate a structured penalty defense dossier if carriers erroneously invoice for unreturned or late equipment.
Missing or incorrect.
Partly complete, with documented gaps.
Complete, with reproducible evidence.
Correctness and evidence
Parse and extract depot drop-off timestamps and container IDs from incoming yard logs. Sign and verify wrapped empty container receipts using OpenAttestation Secp256k1VerificationKey2018 utilities. Detect discrepancies between carrier return deadlines and actual depot drop-off timestamps to validate or invalidate leasing penalties. Generate an itemized dispute response citing the OpenAttestation receipt hash when erroneous late fees are detected.
Missing or incorrect.
Partly complete, with documented gaps.
Complete, with reproducible evidence.
Review interface
Depot reconciliation dashboard displaying empty container return deadlines, OpenAttestation drop-off proofs, and automated leasing dispute dossiers.
Missing or incorrect.
Partly complete, with documented gaps.
Complete, with reproducible evidence.
Safe execution
Dispute packets and leasing defenses are advisory documents; no actual funds or legal arbitration notices are transmitted.
This dimension contributes its full weight only when the submission satisfies the requirement. Partial credit is not awarded.
What you should walk away with
Extract empty container yard drop-off timestamps and equipment condition logs from depot feeds.
Reconcile return events against original ocean carrier leasing agreements and free-time deadlines.
Wrap the empty container return receipt using the OpenAttestation schema to produce an immutable cryptographic proof.
Generate a structured penalty defense dossier if carriers erroneously invoice for unreturned or late equipment.
Reference links and supporting material
Mocked ocean carrier leasing ledger datasets paired with simulated container yard drop-off logs in JSON format. Supplied starter examples are synthetic, not source extracts.
Challenge setup
Configuration summary for this challenge.
Challenge input
Input details are not configured.
Mastra AI
TypeScript agent framework.
Evaluated output
No output checks are configured.
- Extract empty container yard drop-off timestamps and equipment condition logs from depot feeds. Reconcile r...
- Parse and extract depot drop-off timestamps and container IDs from incoming yard logs. Sign and verify wrap...
- Depot reconciliation dashboard displaying empty container return deadlines, OpenAttestation drop-off proofs...
- 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
- Mastra AI · Optional
- Mastra AI · 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.