Bitcoin WikiWallets & custody

PSBT

Updated 9 October 2026StubRandom article

In plain words

Partially Signed Bitcoin Transaction: a standard file format to pass a transaction between wallets for signing.

Glossary on the Learn page

See also

Hardware wallet
A hardware wallet is a small device that keeps your private keys offline and signs transactions inside itself. Even if your computer is infected, the keys never leave the device.
Multisig
Multisig means a payment needs several keys out of a set, for example any 2 of 3. Losing one key, or having one stolen, does not lose the coins.
Air-gapped
A device that never connects to a computer by cable or network; data moves by QR code or SD card.
BIP (Bitcoin Improvement Proposal)
A BIP is a public design document that proposes a change or a standard for Bitcoin. Writing a BIP does not change Bitcoin; node operators decide by running software that implements it.