Proof-of-Background is a time-based mostly consensus system that develops a historical file of the activity dependant on its placement during the blockchain, which can be represented by a hash tree. Censorship happens when any user or application is prevented from undertaking both of these items, for just about any explanation. https://technologybot.co.uk/unlocking-the-future-introducing-syncus-sol-the-next-big-solana-token-in-sol-presale/