Yeah, good one! The terms "Bitcoin ledger" and "Bitcoin blockchain" are often used interchangeably.

The Bitcoin blockchain is basically a digital ledger of all transactions that have ever happened in the Bitcoin network. It's like a big ol' book where every single Bitcoin transaction is recorded.

So when folks say "ledger", they're usually referring to this record of transactions - aka the blockchain. So yeah, you could say they're one and the same thing!