Distributed Ledger

A ledger is simply a list of account transactions. You can look at any accounting application you have ever used – or even your bank statement – to see a simple, chronological list of your transaction history in any account.

A distributed ledger is simply a ledger… that is distributed (or spread across) multiple different devices. Blockchain itself is a kind of distributed ledger.

This makes the transaction history decentralized because it is spread all over the network. It means no single party can manipulate the ledger because that would require changing the records across every single node that holds a copy of that ledger.