dbis_core/docs/special-sub-volumes/sub-volume-e-quantum-proxy.md

Sub-Volume E: Quantum Proxy Server (QPS)

Overview

The Quantum Proxy Server (QPS) bridges transactions from non-quantum financial systems to QFS/QNT rails without disruption, providing quantum envelope creation and dimensional harmonization.

Transaction Path

legacy_tx → QPS → quantum_wrap → DBIS_QFS

QPS Functions

Quantum Envelope Creation

Creates quantum-safe envelopes for legacy transactions with:

• Quantum hash (SHA-3-256)
• Causal-consistency hash (preserves transaction causality)
• Dimensional harmonization hash (ensures consistency across dimensions)

Causal-Consistency Enforcement

Ensures transaction causality is preserved across quantum systems by:

• Maintaining causal order
• Linking to previous transactions
• Verifying temporal consistency

Dimensional Harmonization

Ensures transactions are consistent across:

• Classical dimension (traditional ledgers)
• Quantum dimension (quantum ledgers)
• Multiversal dimension (parallel realities)

FX & Risk Translation

Translates legacy protocol data to quantum-compatible format:

• FX rate conversion
• Risk score calculation
• Protocol-specific field mapping

Universal Compatibility

QPS is compatible with:

• SWIFT - MT103 message format
• ISO20022 - pacs.008, pain.001 formats
• ACH - Automated Clearing House format
• SEPA - Single Euro Payments Area format
• Private Bank Ledgers - Custom private bank formats

Services

QuantumProxyService

Main service for transaction bridging.

Location: src/infrastructure/quantum/proxy/quantum-proxy.service.ts

Key Methods:

• bridgeTransaction() - Bridge transaction from legacy to DBIS QFS
• getProxyTransaction() - Get proxy transaction by ID
• getProxyTransactionsForBank() - Get transactions for a bank

QuantumEnvelopeService

Service for quantum envelope creation.

Location: src/infrastructure/quantum/proxy/quantum-envelope.service.ts

Key Methods:

• createQuantumEnvelope() - Create quantum envelope for legacy transaction
• getEnvelope() - Get envelope by ID
• verifyEnvelopeIntegrity() - Verify envelope integrity

QuantumTranslationService

Service for FX & risk translation.

Location: src/infrastructure/quantum/proxy/quantum-translation.service.ts

Key Methods:

• translateLegacyTransaction() - Translate legacy transaction to quantum format
• getTranslation() - Get translation by ID
• getTranslationsByProtocol() - Get translations by protocol

QuantumCompatibilityService

Service for universal compatibility checking.

Location: src/infrastructure/quantum/proxy/quantum-compatibility.service.ts

Key Methods:

• checkCompatibility() - Check compatibility of legacy protocol
• registerProtocolMapping() - Register protocol mapping
• listSupportedProtocols() - List all supported protocols

API Endpoints

Transaction Bridging

• POST /api/quantum-proxy/bridge - Bridge transaction from legacy to DBIS QFS
• GET /api/quantum-proxy/transaction/:proxyTransactionId - Get proxy transaction by ID
• GET /api/quantum-proxy/transactions/bank/:sovereignBankId - Get transactions for a bank
• GET /api/quantum-proxy/transactions/protocol/:legacyProtocol - Get transactions by protocol

Envelope Management

• GET /api/quantum-proxy/envelope/:envelopeId - Get quantum envelope by ID
• POST /api/quantum-proxy/envelope/:envelopeId/verify - Verify envelope integrity

Translation

• POST /api/quantum-proxy/translate - Translate legacy transaction
• GET /api/quantum-proxy/translation/:translationId - Get translation by ID

Compatibility

• POST /api/quantum-proxy/compatibility/check - Check protocol compatibility
• GET /api/quantum-proxy/compatibility/protocols - List supported protocols
• POST /api/quantum-proxy/compatibility/mapping - Register protocol mapping

Database Schema

QuantumProxyTransaction

Main proxy transaction record.

Fields:

• proxyTransactionId - Unique proxy transaction identifier
• legacyTransactionId - Original legacy transaction ID
• legacyProtocol - Legacy protocol (SWIFT, ISO20022, etc.)
• quantumEnvelopeId - Reference to quantum envelope
• dbisQfsTransactionId - Reference to DBIS QFS transaction
• status - Transaction status (pending, bridged, failed)

QuantumEnvelope

Quantum envelope record.

Fields:

• envelopeId - Unique envelope identifier
• quantumHash - Quantum-safe hash (SHA-3-256)
• causalConsistencyHash - Causal consistency hash
• dimensionalHarmonizationHash - Dimensional harmonization hash
• transactionData - Original transaction data

QuantumTranslation

Translation record.

Fields:

• translationId - Unique translation identifier
• legacyAmount - Original legacy amount
• quantumAmount - Translated quantum amount
• fxRate - FX conversion rate
• riskScore - Risk assessment score
• protocolMapping - Protocol-specific mapping configuration

LegacyProtocolMapping

Protocol mapping configuration.

Fields:

• mappingId - Unique mapping identifier
• legacyProtocol - Legacy protocol name
• mappingConfig - Protocol-specific mapping configuration

Integration Points

• GQL (Global Quantum Ledger): QPS submits transactions to GQL
• Quantum-Safe Crypto: Uses quantum-safe cryptographic hashing
• Legacy Payment Systems: Bridges SWIFT, ISO20022, ACH, SEPA, private ledgers

Use Cases

SWIFT to Quantum Migration

Bridge existing SWIFT transactions to quantum financial rails without disruption.

ISO20022 Quantum Integration

Seamlessly integrate ISO20022 messages with quantum systems.

Legacy Bank Integration

Enable private banks with custom protocols to access quantum financial systems.

Cross-Dimensional Transactions

Ensure transactions are consistent across classical, quantum, and multiversal dimensions.

Example Usage

import { quantumProxyService } from '@/infrastructure/quantum/proxy/quantum-proxy.service';

// Bridge SWIFT transaction to quantum
const result = await quantumProxyService.bridgeTransaction({
  legacyTransactionId: 'SWIFT-12345',
  legacyProtocol: 'SWIFT',
  sourceBankId: 'OMNL',
  destinationBankId: 'USCB',
  amount: '1000000',
  currencyCode: 'USD',
  transactionData: {
    sender: 'OMNL',
    receiver: 'USCB',
    amount: 1000000,
    currency: 'USD',
  },
});

console.log(`Quantum transaction ID: ${result.dbisQfsTransactionId}`);

Status

✅ Implemented - Sub-Volume E is fully implemented and integrated with existing DBIS systems.