Wallets And Keys

A Bitcoin wallet does not hold coins the way a physical wallet holds cash. It manages private keys. The coins live as spendable outputs on the blockchain. Your keys prove you can spend them.

Private Keys

A private key is a secret number. It can create a digital signature that authorizes spending. Anyone with the private key can spend the coins controlled by it.

Never share private keys or seed phrases. Real support staff, wallet developers, and exchange employees do not need them.

Seed Phrases

Most wallets show a 12 or 24 word seed phrase when created. That phrase derives the wallet's keys. If the device breaks, the seed phrase can restore the wallet. If someone else sees the phrase, they can restore and steal the wallet.

Store seed words offline. Paper is a starting point. Metal backups are better for fire and water resistance.

Hardware Wallets

A hardware wallet keeps private keys isolated from a general-purpose phone or computer. The computer can build a transaction, but the hardware wallet signs it only after you approve the details on the device screen.

Hardware wallets reduce risk, but they do not remove responsibility. A bad backup, fake receive address, or leaked seed phrase can still lose funds.

Watch-Only Wallets

A watch-only wallet tracks balances and creates receive addresses without holding spending keys. It is useful for daily monitoring because compromise of the watch-only device does not automatically give spending power.

It can still leak privacy. Anyone with your extended public key can see wallet activity.