Wallet Types Overview
In 2022, FTX — one of the largest cryptocurrency exchanges in the world — collapsed overnight. Customers who kept their Bitcoin on the exchange lost everything. Customers who had withdrawn to their own wallets lost nothing. The difference was not luck — it was preparation.
Simple definitions:
- •Hot wallet: An app that stays connected to the internet (phone, browser, desktop). Super convenient; good for small, daily spending.
- •Cold wallet: Keys kept fully offline (hardware device or paper). Best for long-term savings.
- •Custodial wallet: A company (exchange) holds the keys for you. You log in with email/password.
- •Self-custody: You hold the keys/seed yourself (12–24 words). True ownership, but you must back it up.
- •Hardware wallet: A small offline device that stores keys and lets you approve sends with physical buttons.
- •Software wallet: A mobile/desktop/browser app that stores keys on your device.
- •Multisig: Spending requires M of N keys (e.g., 2-of-3). Removes single-point failure.
Pros and cons (cheat sheet):
Hot (phone/browser)
- •Pros: Fast, easy, great UX, good for daily use
- •Cons: Online = bigger attack surface; keep small amounts only
Cold (hardware/paper)
- •Pros: Offline keys = strong security
- •Cons: Less convenient; costs money (hardware)
Custodial (exchange)
- •Pros: Simple logins, easy buy/sell, resets if you forget password
- •Cons: Not your keys; withdrawals can be delayed/frozen; privacy trade-offs
Self-custody
- •Pros: Maximum control, portable worldwide, censorship resistant
- •Cons: You must protect the seed; no central recovery if lost
Which should I use? (practical picks):
Safety basics for any wallet:
- •Write down your 12–24 word seed clearly; never photograph or cloud-store it.
- •Verify receive addresses on your hardware screen before funding.
- •Use a strong device passcode and app PIN/biometrics.
- •Update wallet apps/firmware from official sources only.
- •For large amounts, send a $5 test first, then the rest after 1–3 confirmations.
Red flags (avoid):
- •Preprinted seed included in a hardware box.
- •Websites/apps asking you to type your seed to “verify” or “recover.”
- •Unknown browser extensions with wallet permissions.
- •QR codes from untrusted sources (always check first/last 4 characters).
The type of wallet you use determines who actually controls your Bitcoin. A hardware wallet means you control it. An exchange wallet means the exchange controls it. In the history of Bitcoin, every major loss of customer funds has happened on exchanges, not in personal wallets.
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