← Crypto · lesson 5 of 12
By the end of this one you'll know what a wallet actually holds, what hot and cold mean, and why losing twelve words on a piece of paper can mean losing everything.
Your crypto never sits in your wallet, it sits on the blockchain, the big shared record book, the same way my hay sits in the barn and not on my key ring. The wallet holds your keys, a secret code that proves the crypto is yours and lets you move it. A hot wallet is an app on your phone, that's the barn key hanging on the hook by the kitchen door, handy every day but easier for a thief to grab because your phone is online. A cold wallet is a little device you keep unplugged, that's the spare key locked in the fire safe, a pain to fetch but hard for anyone to reach. Every wallet also comes with a recovery phrase, usually 12 or 24 plain words, and that phrase is the master key that can rebuild everything. Whoever holds those words holds the crypto, full stop, which is why people write them on paper and never type them into a website or text them to anyone. Lose the words with no backup and the barn stays locked forever, nobody can cut you a new key.
Same lesson, told by a hundred dollar bill. Tap to walk it one step at a time.
In this example, someone moves $100 of crypto from an app to their own wallet, and the network charges a $1 fee, so $99 lands under their key.
The hot wallet app was free, and a cold wallet device in this example costs about $70 one time, like buying a good fire safe.
The crypto was never inside either one, both just hold the keys.
Your screen finally gave out and the phone store clerk is ready to wipe your cracked phone for the trade-in. Halfway through the paperwork you remember the crypto wallet app your cousin set up on it last year, with about $120 worth still in it. The clerk is waiting with a friendly smile and a wipe button.
Pick your move. Then peek at the other roads if you're curious.
A wallet never holds the crypto, it holds the keys, and whoever holds the twelve words holds everything.