Why it matters
Self-custody embodies bitcoin's original promise: be your own bank. No one can freeze your account, deny withdrawals, or become insolvent with your funds. But sovereignty has costs: if you lose your keys, no one can help. Self-custody requires accepting total responsibility.
How it works
The holder generates and stores private keys on devices they control, typically hardware wallets. They create and verify backups of seed phrases. They implement their own security measures: physical security, redundancy, geographic distribution. All signing happens on their devices. No third party has access.
Example
A holder uses a hardware wallet stored in a home safe, with seed phrase backups on steel plates in two geographically separated bank safe deposit boxes. They send and receive bitcoin by signing transactions on the hardware wallet. Their bitcoin exists entirely outside any institution's systems.
Related terms
- Multi-signature
- Third-party custody
- Custodial vs non-custodial
- Key management
- Single point of failure
