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

Network Topology

network-topologytext

┌─────────────────────────────────────────────────────────────────────┐
│                      REALM UNIFIED gRPC API                         │
├─────────────────────────────────────────────────────────────────────┤
│  Web Apps (gRPC-Web)                                                │
│  └─► https://api.realm.com → Cloudflare → Envoy:8080 → :9090        │
│                                                                     │
│  SDK / CLI (native gRPC)                                            │
│  └─► grpc://validator:9090 → Direct connection                      │
│                                                                     │
│  HFT (bidirectional streaming)                                      │
│  └─► grpc://validator:9090 → TradingStream RPC                      │
└─────────────────────────────────────────────────────────────────────┘

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