Evidence-of-Background is really a time-centered consensus mechanism that develops a historic file of the action depending on its posture while in the blockchain, that is represented by a hash tree. In essence, Solana addresses two away from a few challenges identified by Ethereum co-founder Vitalik Buterin in his blockchain trilemma https://technologybot.co.uk/unlocking-the-future-introducing-syncus-sol-the-next-big-solana-token-in-sol-presale/