Paper Wallets Guide
Overview
A paper wallet is a printed document containing your public address and private key (often as QR codes). It's a form of cold storage — completely offline and unhackable remotely. However, paper wallets have significant practical drawbacks: they're fragile, easy to damage, and importing funds requires exposing the private key to a device. They've largely been superseded by hardware wallets but remain a valid backup method.
Security Features
100% offline (air-gapped), No digital attack surface, Can be generated on an air-gapped computer, Physical security only concern, No firmware or software to exploit
Pros & Cons
Pros: completely offline, free to create, no electronic failure points, immune to all digital attacks. Cons: fragile (fire, water, fade), entire balance must be swept when spending (privacy concern), generation requires a trusted/clean computer, easy to make generation mistakes, no passphrase protection, no multi-sig.
Setup Steps
1. Use a clean, air-gapped (never connected to internet) computer. 2. Download an open-source paper wallet generator (verify checksums). 3. Generate the wallet offline. 4. Print on a quality printer (consider removing WiFi connectivity from printer). 5. Make multiple copies stored in separate secure locations. 6. Consider laminating or using a waterproof sleeve. 7. Test by sending a tiny amount and verifying on a block explorer. 8. Never expose the private key until you're ready to sweep the entire balance.
Best For
Very long-term cold storage, backup method, gifts, situations where hardware wallets are not available
Tips & Recommendations
Paper wallets are largely obsolete for most users — hardware wallets are more practical and just as secure. If you do use a paper wallet, the entire balance should be swept (moved to a new wallet) whenever you access it, because exposing the private key compromises future security.
Related Wallet Guides
Exchange Wallets Guide
Exchange wallets are custodial — the exchange holds your private keys on your behalf. When you buy crypto on Coinbase, Binance, Kraken, or any exchange, the assets sit in the exchange's wallet. This is convenient but introduces counterparty risk: if the exchange is hacked, goes bankrupt (FTX), or freezes withdrawals, you may lose access to your funds. 'Not your keys, not your coins.'
Hardware Wallets Guide
Hardware wallets store your private keys on a dedicated, offline device, providing the highest level of security for cryptocurrency storage. They are immune to computer viruses, remote attacks, and exchange hacks because the private keys never leave the device. The two dominant brands are Ledger (Nano S Plus, Nano X, Stax) and Trezor (Model One, Model T, Safe 3). Hardware wallets are essential for anyone holding significant value in crypto.
Multi-Signature Wallets Guide
Multi-signature (multisig) wallets require multiple private keys to authorise a transaction (e.g., 2-of-3, 3-of-5). This eliminates single points of failure — no single compromised key can move funds. Multisig is the standard for institutional custody, DAO treasuries, and high-value personal holdings. Solutions include Gnosis Safe (now Safe), Casa, Unchained Capital, and native Bitcoin multisig.
Software Wallets Guide
Software wallets are applications (desktop, mobile, or browser extension) that store your private keys on your device. They offer a balance between security and convenience. Hot wallets (connected to the internet) include MetaMask, Trust Wallet, Phantom, and Exodus. They're essential for interacting with DeFi, NFTs, and dApps. Security depends on your device's security and your practices.