Chain Architecture

Settlement Process

Sub-threshold net positions (<$100K default) carry forward to the next window (max 3 windows) using a CHIPS-model approach, expanding the netting pool across windows for additional compression.

Chain Specifications

Native Precompiles

All settlement operations execute as native Go precompiles at the consensus layer — not as EVM smart contracts. This guarantees deterministic gas costs, prevents MEV extraction, and enables cryptographic operations that are infeasible within the EVM execution environment.

• 0x0300 Netting Engine — multilateral netting with O(n) complexity
• 0x0301 Oracle — deterministic FX rate feeds from AFXO
• 0x0302 Corridor Manager — multi-tenant corridor lifecycle
• 0x0303 Access Control — 6-level RBAC per corridor
• 0x0304 Settlement Claims — non-transferable institutional tokens
• 0x0305 Compliance — audit trail with sanctions screening hooks
• 0x0306 Cross-Corridor — netting across corridors sharing currencies
• 0x0307 Bilateral — per-pair pre-netting with SWIFT pacs.008 output
• 0x0308 Privacy — Pedersen commitments, AES-256-SIV, SSS
• 0x0309 ML-DSA — FIPS 204 post-quantum authentication
• 0x030A Delegation Registry — participant-sovereign view key grants

Design Principles

• Non-Custodial

  The Settlement Computer coordinates settlement instructions but never holds funds. All regulated activities remain with licensed institutional partners.

• Corridor Isolation

  Each corridor operates independently with its own settlement windows, participant lists, privacy levels, and compliance rules. Failures in one corridor do not propagate.

• Deterministic Execution

  FX rates are determined at window close via AFXO oracle feeds, not executed in market. Oracle prices are locked, ensuring no slippage or front-running.

• Consensus-Level Settlement Logic

  All settlement operations run as native Go precompiles, not EVM smart contracts. This guarantees deterministic gas costs, prevents MEV extraction, and enables cryptographic operations infeasible in the EVM.

• Technology Service Provider

  FiatRails is a non-custodial coordination protocol — not a bank, PSP, e-money issuer, or remittance company. We never hold fiat, never custody user funds, and never execute settlement.

Intellectual Property

5 US provisional patent applications covering approximately 287 claims across the Settlement Computer stack. Patent coverage spans netting architecture, cross-corridor coordination, agentic clearing, multi-tenant corridor management, and cryptographic privacy.