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Fulfillment / Settlement Verification

The ATLAX Match Engine does not custody funds. Its role is to match orders, generate deterministic fill messages, publish execution data, and send fills to the settlement layer. The settlement layer verifies collateral, margin, oracle bounds, exposure caps, liquidation risk, nonce validity, and signature validity.

// fill.message · example

{
  "market": "XRP-PERP",
  "maker": "0xA91...82F",
  "taker": "0x49C...E11",
  "side": "LONG",
  "size": "25000",
  "price": "2.1842",
  "matchId": "ATLX-93481",
  "timestamp": "2026-05-22T14:22:09Z",
  "settlementMode": "SIMULATED"
}

// settlement.verification.checklist

Signature CheckPassed

Nonce CheckPassed

Oracle Deviation0.11% — Passed

Margin RequirementPassed

Exposure LimitPassed

Liquidation RiskHealthy

Market StatusActive

Final StatusFill accepted for simulated settlement

// prevents.fake.fills

›Signed orders

›Nonce validation

›Fill IDs

›Oracle price bounds

›Margin checks

›Exposure caps

›Settlement contract validation

›Public execution logs

›Future Merkle-rooted fill batches

›Independent indexer verification