For large amounts, don't leave this file on a computer that is frequently connected to the internet. 3. Backup Best Practices
Because you control the private keys locally, no government, bank, or hacker can freeze or confiscate your funds remotely. You are your own bank. Bitcoin Core Wallet.dat
In the world of Bitcoin, few phrases carry as much weight—or cause as much anxiety—as wallet.dat . For users of (the original reference client), this single file is the gateway to their wealth. Unlike web or mobile wallets that manage private keys for you, Bitcoin Core places the full responsibility—and the full power—directly in your hands. For large amounts, don't leave this file on
The Wallet.dat file is legacy technology, but it remains the default for backward compatibility. If you create a new wallet today in Bitcoin Core v25+, you have the option to create a "Descriptor Wallet" which uses SQLite. You are your own bank
wallet.dat is a Berkeley DB (or LevelDB in newer versions) file that contains all the sensitive information needed to access and spend your Bitcoin. Inside this encrypted (or unencrypted) database, you will find: