Ledger

A ledger is a record of all transactions that have taken place between different wallets on the Bitcoin blockchain. The Bitcoin ledger is publicly verifiable by anyone and is distributed across the world via nodes and miners.

These nodes ensure that the circulating supply of Bitcoin isn’t double-spent and the miners ensure that the next block of transactions are processed.

Ledger is also the name of a company that supplies cold wallets to allow you to safely secure your sats.

You will often see people use the word “ledger” to describe their hardware wallet but, depending on the context of the conversation, they will also be referring to Bitcoin’s fully verifiable transaction history.