Digital Letter-of-Credit Presentation Compliance

W-B. eUCP/eURC/URDTT discrepancy check (ART-54) -> commercial-invoice data validation (art-08) -> cross-document consistency + provenance (ART-55). Machine-checks a digital LC presentation end-to-end.

OpenChainGraph · 3 Steps cryptographic mandate Hash-Anchored §4 chain_depth:3 Client-Side · Zero PII

Chain Stages · 3 Steps

1 ROOT · D0 node

Digital Trade Rules Compliance Checker art-54-digital-trade-rules-checker

discrepancies and verdict (H1) feed the invoice validator

MCP Call · check_digital_trade_rules

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "check_digital_trade_rules",
    "arguments": {}
  },
  "id": 1
}

↓

2 D2 node

EN 16931 / Factur-X E-Invoicing Batch Validator art-08-en16931-einvoice-batch-validator

invoice validation (H2) feeds the provenance verifier

MCP Call · validate_einvoice_batch

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "validate_einvoice_batch",
    "arguments": {}
  },
  "id": 1
}

↓

3 TERMINAL · D3 node

Trade Document Provenance & Consistency Verifier art-55-trade-document-provenance-verifier

Exports composite digital-LC artifact with execution_hash (H3) -- final stage

MCP Call · verify_trade_document_set

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "verify_trade_document_set",
    "arguments": {}
  },
  "id": 1
}