Offline-First BFT Consensus with Token-Gated Security for Blockchain in Low-Bitrate Mesh Networks
Francis Kagai, Philip Branch, Jason But, Rebecca Allen · Blockchain Research and Applications · 2026
We present an Offline-First Byzantine Fault Tolerant (OFBFT) consensus protocol that enables token-incentivized blockchain coordination in low-bitrate mesh networks with intermittent satellite backhaul. The architecture maps each mesh zone to a Solana Program Library token mint, allowing on-chain logic to mirror real-world communication boundaries. Within each zone, nodes execute localized Byzantine-resilient consensus, producing compact Merkle root summaries that are periodically anchored to the Solana blockchain via authenticated gateways during satellite visibility windows. This design achieves verifiable finality with bandwidth usage below 1 kbps and packet sizes capped at 120 bytes. In a four-node testbed, the protocol achieved over 98% consensus success, with an average 3-of-4 finalization latency of 2.7 seconds and a typical 4-of-4 completion time. These results show that secure and tamper-evident coordination remains achievable in adversarial, resource-constrained environments without requiring full blockchain replication.