OpenChainGraph Suite · CONTRACT A3 · arch #5

Canton MMF Collateral Eligibility Chain

Note (dated 2026-08-04): a chain composes independent computations performed in an analytical order. No step's output is carried into the next step by the execution model; each step computes from its own declared inputs. This is true of every chain on this site, including chains whose per-step copy below reads as a data handoff.

Validate a tokenized money-market fund as eligible collateral for Canton settlement. Fund-level NAV and eligibility check → HQLA tier and haircut verdict.

OpenChainGraph · 2 Steps collateral mandate Hash-Anchored §4 chain_depth:2 Client-Side · Zero PII

Chain Topology — Tokenized Fund Collateral Validator → Tokenized Collateral Eligibility Checker

§4 Execution Hash · Chain Definition Anchor

execution_hash:computing…

Live Execution

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Chain Stages · 2 Steps

1 ROOT · D0 node

Tokenized Fund Collateral Validator 514-tokenized-fund-collateral-validator

fund_eligible,nav_verified,ucits_compliant feed Stage 2 collateral eligibility

MCP Call · validate_fund_collateral

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

↓

2 TERMINAL · D2 node

Tokenized Collateral Eligibility Checker 505-tokenized-collateral-eligibility-checker

hqla_tier,dtc_eligible,haircut_pct: Exports MMF collateral mandate, final stage

MCP Call · check_tokenized_collateral_eligibility

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

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