Self Custody
The practice of holding your own private keys and maintaining full control of your cryptocurrency, rather than trusting a third-party custodian like an exchange.
Why It Matters
Self-custody is crucial for cryptocurrency users because it gives them control over their assets. Without self-custody, you’re relying on exchanges or third parties that can be hacked or go offline, putting your investment at risk.
Example
For instance, if you buy Bitcoin but store it on an exchange, you rely on that exchange’s security. If the exchange suffers a breach, you could lose your Bitcoin, whereas storing it in your own wallet means you manage your own security.
Beginner Context
For beginners, understanding self-custody can shift the perspective on ownership in crypto. It emphasizes the importance of controlling one’s assets directly, which is different from traditional banking systems.
Mike Starr
Founder, CryptoWizardTools · M.S. Organizational Management
Last reviewed: August 2026
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Cold Wallet
A cryptocurrency wallet that is not connected to the internet, providing enhanced security against hacking. Examples include hardware wallets and paper wallets.
Seed Phrase
A series of 12 or 24 words generated by a cryptocurrency wallet that serves as a backup to restore access to the wallet. It must be kept secure and private.
Private Key
A secret cryptographic key that gives the holder control over a cryptocurrency wallet and the ability to sign transactions. It must be kept secure and never shared.
Hardware Wallet
A physical device designed to securely store cryptocurrency private keys offline. Popular hardware wallets include Ledger and Trezor.
Hot Wallet
A cryptocurrency wallet connected to the internet, offering convenience for frequent transactions but with higher security risks compared to cold wallets.