A permissionless blockchainAs a distributed ledger technology (DLT), a blockchain is a digital ledger that can create an immutable record of transactions.... is a distributed ledgerA ledger is a database that stores recorded data; a distributed ledger synchronizes that data across a network of nodes.... that anyone can access and add transactions. There is no need for approval from a central authorityA central authority is an entity that holds centralized control over something, such as a financial exchange, asset, or transaction.... to use or make changes to the data on the blockchain.
