This white paper introduces Solana, a novel blockchain architecture aiming for high performance through an innovation called Proof of History (PoH). PoH provides a way to cryptographically verify the order and passage of time between events recorded on the blockchain, enhancing efficiency when combined with consensus mechanisms like Proof of Stake (PoS). The paper outlines Solana's network design, the mechanics of PoH including its verification and scaling, and the proposed PoS consensus algorithm which focuses on fast confirmations and resilience against network partitions. Furthermore, it details a Streaming Proof of Replication (PoRep) for secure and efficient storage of blockchain data. Finally, the document analyzes Solana's system architecture, its potential network and computational limits, and its approach to high-performance smart contracts using Berkeley Packet Filter bytecode.