Bitcoin Wallets
Software or hardware that manages your private keys and lets you send/receive Bitcoin. Types: hot, cold, hardware, paper.
What is a Bitcoin Wallet?
A Bitcoin wallet is software (or hardware) that stores your private keys and lets you send and receive Bitcoin. It doesn't actually "hold" Bitcoin — your Bitcoin lives on the blockchain. The wallet holds the keys that prove you own it.
Types of Bitcoin Wallets
Hot Wallets (Online)
- Mobile wallets: Blue Wallet, Muun, Phoenix
- Desktop wallets: Sparrow Wallet, Electrum
- Web wallets: Exchange wallets (custodial)
Convenient but internet-connected. Use for small amounts.
Cold Wallets (Offline)
- Hardware wallets: Ledger, Trezor, Coldcard
- Paper wallets: Printed keys (advanced, fragile)
- Air-gapped computers: Never connected to internet
Maximum security. Use for savings and large amounts.
The Golden Rule
"Not your keys, not your coins." — Bitcoin community wisdom
If a third party holds your private keys (exchange, custodian), they control your Bitcoin. You have an IOU, not Bitcoin.
Seed Phrase
Modern wallets give you a 12 or 24-word seed phrase when set up. This backup can regenerate all your keys. Guard it with extreme care — anyone with these words can steal all your Bitcoin.
✅ Write seed phrase on paper (metal preferred)
✅ Store in multiple secure physical locations
❌ Never photograph or store digitally
❌ Never share with anyone
❌ Never enter on unknown websites
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