Self-custody
Holding the keys to your bitcoin or digital dollars yourself, instead of leaving them with a company that holds them for you.
A balance of bitcoin or digital dollars isn’t stored in an app. It sits on a public network, and it moves only when someone signs with the right private key. Self-custody means that someone is you.
On an exchange, the company holds the keys and keeps a record of what it owes you. That works until it can’t or won’t pay: when it freezes withdrawals, goes bankrupt or closes your account. In self-custody there’s no one in between, so there’s no one who can do that.
It also means there’s no one to call. If you lose the key and every copy of it, the coins stay where they are and nobody can move them again. If someone else gets a copy, they can move them as easily as you.
Self-custody doesn’t protect a token from its own issuer. The issuer of a digital dollar can usually freeze it in any wallet, whoever holds the keys: Tether’s terms allow it for USDT, and Circle’s for USDC. Bitcoin has no issuer.
In practice, self-custody comes down to two questions: where the keys live (on a phone, on a hardware device, split across several places) and how you get them back if the device is lost (a seed phrase, a backup in your cloud account, or the other keys of a multisig wallet).
Sources
Checked on November 5, 2026.