1 ROOT §21.4 gate

Public-Money Settlement Receipt art-513-public-money-settlement-receipt

GATE: /currency neq null → art-492 | default → end

Single-settlement, attribution and at-par verdicts. Gate: a declared currency continues to finality classification; no declared currency means there is nothing further to classify, and the automated path ends.

MCP Call · build_public_money_settlement_receipt

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "build_public_money_settlement_receipt",
    "arguments": {
      "payment_ref": "ref-001",
      "payer_class": "citizen",
      "declared_revenue_code": "REV-1",
      "revenue_code_table": [{ "code": "REV-1", "ministry": "Treasury" }],
      "treasury_account_credited": "TSA-1",
      "currency": "USD",
      "amount_collected": 1000,
      "amount_credited": 1000,
      "rails": [{ "rail": "rtgs", "settlement_ref": "s-1", "declared_finality_basis": "irrevocable", "settled": true }]
    }
  },
  "id": 1
}

2 NODE node

Settlement Finality Classifier art-492-classify-settlement-finality

Rail-agnostic settlement-finality tier feeds the settlement-asset legal-finality classification.

MCP Call · classify_settlement_finality

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "classify_settlement_finality",
    "arguments": {
      "settlement_model": "single_slot_bft",
      "included_in_block": true,
      "quorum_committed": true
    }
  },
  "id": 2
}

3 NODE node

Settlement-Asset & Legal-Finality Classifier art-59-settlement-asset-finality-classifier

Settlement-asset legal-finality tier and singleness verdict feed the multi-currency PvP check.

MCP Call · classify_settlement_asset_finality

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "classify_settlement_asset_finality",
    "arguments": {
      "settlement_asset": "off-chain-RTGS",
      "finality_designation": "SFD-designated",
      "jurisdiction": "US",
      "singleness_test": "par-with-CBM"
    }
  },
  "id": 3
}

4 NODE §21.4 gate

Multi-Currency PvP Validator 511-multi-currency-pvp-validator

GATE: /has_canton_leg eq true → end | default → rca-03

PFMI Principle 12 atomicity and Herstatt-risk verdict for the currency leg. Gate: a Canton/DLT-native leg carries no ISO 20022 message and ends here; any other leg continues to the address-migration check.

MCP Call · validate_pvp_settlement

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "validate_pvp_settlement",
    "arguments": {
      "legs": [{ "ccy_sold": "USD", "ccy_bought": "EUR", "notional": 1000, "implied_rate": 0.92 }],
      "atomicity_type": "atomic_pvp",
      "finality_type": "irrevocable_realtime",
      "has_unwind_procedure": true,
      "canton_leg": false
    }
  },
  "id": 4
}

5 TERMINAL node

ISO 20022 Structured-Address Migration Batch Verifier rca-03-iso20022-address-migration-verifier

ISO 20022 pacs.008 Nov-2026 address-field readiness verdict for the messaging leg -- final stage.

MCP Call · verify_address_migration_batch

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "verify_address_migration_batch",
    "arguments": {
      "strictness": "standard"
    }
  },
  "id": 5
}