Blockchain is a system of recording information based on a decentralised digital ledger of transactions that is duplicated and distributed across the entire network of computer systems on the blockchain, rather than a single controlling authority. In (alternative) finance, blockchain holds the promise of providing a faster, more trustworthy, and impossible to change, hack, or cheat system for recording financial transactions. Although it can serve multiple purposes, it is mainly associated with cryptocurrencies and crypto lending. Read more on blockchain in P2P in our article on how to earn interest with cryptocurrencies