Canton Margin Call & Collateral Mobilization 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.

Margin computation (UMR/d499 for derivatives; GMRA/d349 for repo/SFT), collateral eligibility, and cash-leg finality.

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

Chain Stages · 3 Steps

1 ROOT · D0 node

Margin Call Collateral Mobilizer 513-margin-call-collateral-mobilizer

branch,margin_required,collateral_gap feed Stage 2 collateral eligibility

MCP Call · mobilize_margin_collateral

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

↓

2 D2 node

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

hqla_tier,eligible_value feed Stage 3 cash-leg finality

MCP Call · check_tokenized_collateral_eligibility

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

↓

3 TERMINAL · D3 node

On-Chain Cash-Leg Finality Checker 506-onchain-cash-leg-finality-checker

finality_verdict: Exports margin call collateral mandate, final stage

MCP Call · check_cash_leg_finality

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