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Challenge

Build a Trade Document Endorsement Chain and Missing Evidence Tracker

Audit multi-party transferable records and bills of lading for title endorsement gaps. Assemble TradeTrust compliant endorsement sequences and issue automated evidence requests.

Business OperationsHosted by Vera
Challenge brief

What you are building

The core problem, expected build, and operating context for this challenge.

Audit multi-party transferable records and bills of lading for title endorsement gaps. Assemble TradeTrust compliant endorsement sequences and issue automated evidence requests.

Maritime trade documentation specialist

Incorporate electronic bills of lading and warehouse warrants into an endorsement tracker.

Verify token registry smart contract addresses and previous endorser public keys.

Identify breaks in the transfer of title or unverified intermediate holders.

Formulate a chronological endorsement lineage chart and generate missing evidence requests.

Linear custody timeline graph showing endorsement transitions, signature status badges, and request ticket links.

Utilize TradeTrust document-store repository fixtures and sample JSON transferable records from source 1. Starter examples below are synthetic. They are not downloaded records.

TradeTrust Adopts TradeTrust token registry identity proof formats and transferable record ownership verification steps.

langgraph, ethers, pydantic. LangGraph's cyclic state graphs model complex multi-party endorsement validations and pending inquiry loops. Instruction-following API model skilled at legal document sequence evaluation and exception detection.

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.

Detects missing endorsements between intermediate holder transfers.

Validates issuer token registry contract formats against Sepolia or Amoy networks.

Generates targeted Request for Information (RFI) notices citing specific broken links.

Emits structured endorsement chain summary payloads for downstream settlement.

```json [ { "input": { "bill_number": "TT-BL-99120", "endorsement_chain": [ { "holder": "Exporter Corp", "transferred_to": "Bank Alpha", "signature_valid": true }, { "holder": "Bank Alpha", "transferred_to": "Importer Corp", "signature_valid": true } ], "claimed_owner": "Importer Corp" }, "expected_output": { "chain_intact": true, "missing_links": 0, "status": "CLEAR_FOR_CARGO_RELEASE", "rfi_issued": false } }, { "input": { "bill_number": "TT-BL-99121", "endorsement_chain": [ { "holder": "Exporter Corp", "transferred_to": "Bank Alpha", "signature_valid": true }, { "holder": "Intermediary Trading", "transferred_to": "Importer Corp", "signature_valid": false } ], "claimed_owner": "Importer Corp" }, "expected_output": { "chain_intact": false, "missing_links": 1, "status": "ENDORSEMENT_BREAK_DETECTED", "rfi_issued": true } } ] ```

Acts purely as an analytical verification workspace; no on-chain token transfers or title releases are executed. Use mock external writes. Require human review before any real deployment.

Rules

Participation guide

Acts purely as an analytical verification workspace; no on-chain token transfers or title releases are executed. Use mock external writes and human review.

Delivery guide

How work is evaluated

Evaluation

Detects missing endorsements between intermediate holder transfers. Validates issuer token registry contract formats against Sepolia or Amoy networks. Generates targeted Request for Information (RFI) notices citing specific broken links. Emits structured endorsement chain summary payloads for downstream settlement.

Submission format

Runnable source, pinned dependencies, setup commands, working interface, example outputs, recorded demo, tests, and action logs.

Datasets

Challenge datasets

Public datasets, plus the private datasets you have access to.

Evaluation rubric

How submissions are scored

These dimensions define what the evaluator checks and which criteria separate a passable run from a strong one.

Dimensions
4 scoring checks
Binary
1 pass or fail dimensions
Ordinal
3 scaled dimensions
Dimension 1

Complete workflow

Incorporate electronic bills of lading and warehouse warrants into an endorsement tracker. Verify token registry smart contract addresses and previous endorser public keys. Identify breaks in the transfer of title or unverified intermediate holders. Formulate a chronological endorsement lineage chart and generate missing evidence requests.

Score scale
012
Score 0

Missing or incorrect.

Score 1

Partly complete, with documented gaps.

Score 2

Complete, with reproducible evidence.

Dimension 2

Correctness and evidence

Detects missing endorsements between intermediate holder transfers. Validates issuer token registry contract formats against Sepolia or Amoy networks. Generates targeted Request for Information (RFI) notices citing specific broken links. Emits structured endorsement chain summary payloads for downstream settlement.

Score scale
012
Score 0

Missing or incorrect.

Score 1

Partly complete, with documented gaps.

Score 2

Complete, with reproducible evidence.

Dimension 3

Review interface

Linear custody timeline graph showing endorsement transitions, signature status badges, and request ticket links.

Score scale
012
Score 0

Missing or incorrect.

Score 1

Partly complete, with documented gaps.

Score 2

Complete, with reproducible evidence.

Dimension 4

Safe execution

Acts purely as an analytical verification workspace; no on-chain token transfers or title releases are executed.

Binary check

This dimension contributes its full weight only when the submission satisfies the requirement. Partial credit is not awarded.

Learning goals

What you should walk away with

  • Incorporate electronic bills of lading and warehouse warrants into an endorsement tracker.

  • Verify token registry smart contract addresses and previous endorser public keys.

  • Identify breaks in the transfer of title or unverified intermediate holders.

  • Formulate a chronological endorsement lineage chart and generate missing evidence requests.

Resources and assets

Reference links and supporting material

Dataset notes

Utilize TradeTrust document-store repository fixtures and sample JSON transferable records from source 1. 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.

Evaluation checks
  • Incorporate electronic bills of lading and warehouse warrants into an endorsement tracker. Verify token reg...
  • Detects missing endorsements between intermediate holder transfers. Validates issuer token registry contrac...
  • Linear custody timeline graph showing endorsement transitions, signature status badges, and request ticket...
Configured evaluation evidence
  • 2 public reference cases
Configured runtime
  • 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

Action Space
  • LangGraph · Optional
Orchestration
  • 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.

Frequently Asked Questions about Build a Trade Document Endorsement Chain and Missing Evidence Tracker