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Solana was conceived in 2017 when founder Anatoly Yakovenko sought out a way for a decentralized network of nodes to match the performance of a single node. None of the major blockchains come close to achieving this property. Solana’s core innovation is Proof of History (POH), a globally-available, permissionless source of time in the network that works before consensus. POH is not a consensus protocol or anti-Sybil mechanism, but a solution to the clock problem.