FlashChain: IO-Aware Attention for Scalable, Decentralized AI in Web3 Systems

Abstract

We introduce FlashChain, a decentralized framework that integrates IO-aware attention mechanisms—especially FlashAttention—into scalable, trustless AI systems. As Transformer-based models become foundational to Web3 infrastructure (e.g., DAOs, decentralized search, autonomous agents), their quadratic compute and memory bottlenecks present critical challenges. FlashChain adapts block-sparse FlashAttention into a modular architecture optimized for multi-node, low-bandwidth environments typical of blockchain and edge networks. We propose a hybrid protocol combining attention kernel optimization with zero-knowledge verifiability, enabling real-time, trustless AI inference across distributed nodes. Benchmarks show 3–5× speedups and up to 30× gas savings per inference compared to baseline on-chain models.