Wallets, Explained

A crypto wallet doesn't actually hold your coins the way a physical wallet holds cash. What it holds is a private key — a piece of cryptographic data that proves you control a given address on the blockchain. Your actual balances live on the blockchain itself; the wallet is just the tool that lets you prove ownership and authorize transactions.

The first distinction worth understanding is custodial vs. self-custody. A custodial wallet — the kind you get when you sign up for a major exchange — means the exchange holds the private keys on your behalf. That's convenient, since there's no key to lose and password resets work like any other website. But it also means you're trusting that company to remain solvent and honest with your funds. A self-custody wallet means you hold the private keys yourself, with no intermediary. It's more responsibility, but it's also the only setup where you have direct, unconditional control of your assets.

The second distinction is hot vs. cold storage. A hot wallet is connected to the internet — a browser extension or phone app — which makes it convenient for regular use but leaves it more exposed to malware, phishing, or a compromised device. A cold wallet keeps your private keys on a device that's never connected to the internet, typically a small hardware device you plug in only when you need to sign a transaction. Cold storage is generally considered the safer option for holding larger amounts you don't need to move often.

In practice, most people end up using a mix: a small amount in a hot wallet for everyday transactions, and the bulk of their holdings in cold storage. Whatever setup you choose, the one universal rule is this — your wallet's recovery phrase (usually 12 or 24 words) is the master key to everything. Anyone who has it can access your funds, and if you lose it with no backup, there is no "forgot password" option. Write it down, store it offline, and never enter it into a website or share it with anyone claiming to be support — legitimate wallet providers will never ask for it.