crypto
Self-Custody
Self-custody means holding your own cryptocurrency private keys rather than leaving coins on an exchange. You gain immunity from exchange failures, at the cost of being solely responsible for security and backups.
Exchange collapses — Mt. Gox, FTX — taught the lesson behind "not your keys, not your coins": balances on a platform are claims against a company, not coins you control. Self-custody removes that counterparty risk entirely.
The responsibility transfer is real, though: no password resets, no fraud department, no recourse for mistakes. A sensible path is learning with small amounts in a software wallet before moving savings to cold storage.
Related terms
- Cold Storage
- Cold storage keeps cryptocurrency private keys on a device that never touches the internet — typically a hardware wallet — making remote theft practically impossible. It's the standard for securing long-term holdings.
- Seed Phrase
- A seed phrase is a list of 12 or 24 common words that encodes a crypto wallet's master private key. Anyone holding the phrase controls the funds; losing it (with the wallet) means the funds are gone permanently.
- Bitcoin Halving
- The bitcoin halving is a pre-programmed event roughly every four years (210,000 blocks) that cuts the new bitcoin issued to miners per block in half, slowing supply growth until the 21 million cap is reached.
Frequently asked questions
What is Self-Custody?
Self-custody means holding your own cryptocurrency private keys rather than leaving coins on an exchange. You gain immunity from exchange failures, at the cost of being solely responsible for security and backups.