Architecture Overview

Settlement Process

Obligations are recorded throughout the settlement window, compressed through four layers of netting (bilateral, per-corridor multilateral, cross-corridor, and residual carry-forward), priced at oracle-determined FX rates, and settled as consolidated net positions.

Configurable carry-forward of sub-threshold residuals, on the CHIPS model, expands the netting pool across windows for additional compression.

Chain Architecture

The Settlement Computer runs on a dedicated settlement network with permissioned validators. All settlement logic is implemented as consensus-level native precompiles, not smart contracts. This provides deterministic execution cost, guaranteed execution, and no ordering advantage: reference rates are fixed at window open.

All figures are from the Lagrange testnet on generated test flow, as at September 2026. Participant profiles are synthetic. No production traffic.

Native Precompiles

All settlement logic runs at the consensus layer as consensus-level settlement logic — not EVM smart contracts. This provides deterministic execution cost, no ordering advantage (reference rates are fixed at window open), and enables cryptographic operations that would be prohibitively expensive in the EVM.

Eleven native precompiles cover netting, FX reference pricing, compliance hooks, settlement claims, cross-corridor netting, token controls, counter-attestation, corridor management, validator management, post-quantum authentication and privacy.

Privacy — Powered by Qedis

Privacy by Qedis — the cryptographic privacy and post-quantum runtime, owned by Digitalyze Labs Ltd and perpetually licensed to the NETTA group. Verifiable confidentiality with no single-party key, no trusted hardware, and no trusted setup.

Qedis provides a substrate-agnostic privacy architecture with no single-party key, no trusted hardware and no trusted setup. Supervisory visibility is reconstructed only under threshold, multi-party control, with every reconstruction and delegated access recorded on-chain. Obligation amounts are netted homomorphically on committed values; metadata is encrypted; proofs are transparent and post-quantum ready; counterparty addressing is unlinkable; key custody is distributed.

Participants control who sees their data. Corridor privacy configuration and the full cryptographic specification are documented for qualified institutions under NDA.

Post-Quantum Cryptography

ML-DSA (FIPS 204) signatures and ML-KEM (FIPS 203) key encapsulation, hybrid with ECDSA for migration. Deployed on testnet through a FIPS-validated library.

Multi-Tenancy

All Settlement Computer products coexist on a single chain with per-corridor isolation. Each corridor has independent configuration, settlement windows, privacy levels, and compliance rules.

ISO 20022 CBPR+

Born-native ISO 20022 CBPR+ — not a translation layer. Native generation of pacs.008 and pacs.009 at the settlement layer; pain.001, pacs.002, camt.053 and camt.054 via the institutional API; CBPR+ Level 1 (schema) and Level 2 (usage guideline) validation passed — validated against the official ISO 20022 schemas and the CBPR+ usage guidelines in automated testing; Swift conformance testing is a pre-pilot step and no Swift certification is claimed. Settlement instructions are generated natively and deterministically at the settlement layer. Machine-assisted translation is used only to normalise inbound payment-provider message formats into canonical obligations, with amounts and identifiers tokenised before processing and results cached deterministically; an untranslatable message is held and flagged, never settled.

Design Principles

• Non-Custodial

  The Settlement Computer coordinates settlement instructions but never holds funds. All licensable activity remains with participating licensed institutions.

• 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 reference rates are fixed at window open, not executed in market. Locked reference rates mean no slippage and no ordering advantage.

• Consensus-Level Settlement Logic

  All settlement operations run as consensus-level settlement logic, not EVM smart contracts. This guarantees deterministic execution cost, no ordering advantage, and enables cryptographic operations infeasible in the EVM.

• Technology Service Provider

  NETTA is a non-custodial coordination protocol — not a bank, PSP, e-money issuer, or remittance company. NETTA never holds fiat, never custodies user funds, and never executes settlement. All licensable activity is performed by participating licensed institutions.

Intellectual Property

Twenty US provisional patent applications on file: sixteen held by FiatRails Foundation Ltd; four covering the Qedis privacy and post-quantum runtime, owned by Digitalyze Labs Ltd and licensed perpetually to the group.

• Settlement determination and just-in-time atomic net settlement
• Risk intelligence and micro-obligation aggregation
• Tokenised-asset and digital-currency netting
• Sharia-compatible settlement architecture
• Cryptographic privacy and post-quantum authentication