Architecture Overview

How Realm achieves 25ms finality with post-quantum security

System Components

Realm is a purpose-built blockchain for high-frequency trading, combining:

• Mysticeti BFT Consensus - 25ms block finality
• GPU-Native Execution - Parallel order matching
• Post-Quantum Cryptography - Dilithium-3 signatures
• Unified gRPC API - Single protocol for all clients

API Access

All clients connect via a single gRPC endpoint:

• Web Apps — gRPC-Web via https://api.realm.software
• SDK / CLI — Native gRPC for full performance
• HFT — Bidirectional streaming via TradingStream RPC

No REST, no WebSocket, no FIX protocol. Just Protocol Buffers over gRPC for type-safe, low-latency communication.

Validator Nodes

Validators run the consensus protocol and execute transactions. Each validator:

• Participates in Mysticeti BFT rounds
• Executes the matching engine
• Serves the gRPC API
• Maintains the full state