53: Who Actually Holds Your Digital Assets?

Let's start with the word custody itself.

Custody sounds like a legal term and in other contexts, it really is.

But here it actually means something much simpler.

Who is responsible for the safekeeping of your crypto? As you know, your digital assets don't actually sit inside an app.

They sit on a blockchain, which is that shared public record.

And anyone can look at the blockchain and which crypto wallets own which crypto.

The wallets are identified by a series of unique numbers, an address, but they don't actually identify the person who owns the wallet.

So what decides who has direct control over the wallet is called a private key, which is basically a long string of characters that proves that you have the right to move that crypto.

Think of it like an email address and password.

Whoever holds that key can move the funds directly without needing anyone's permission.

Every wallet actually has two keys, and they do opposite jobs.

The public key is the one you're meant to share, and that's what produces your wallet address, the string someone needs in order to send you something.

Think of it like an email address.

There's no risk in giving it out, but the private key is the one that actually moves the funds, and it never leaves your hands.

You want to share the public key freely, but share the private key never.

So when you buy through one of the big central exchanges, which is where most often people start, the company who runs that exchange, like Coinbase, OKEx, or Kraken, holds the key.

You get an account, a password, a balance on a screen, and you still own your assets and can move them, buy them, sell them, send them.

But you do it by instructing the exchange rather than controlling it yourself.

The exchange is the one holding your private key, and your balance is a record of what they're holding on your behalf.

The exchange will never move your crypto without your authorization.

And that setup is called custodial.

And if it sounds familiar, it should.

It's roughly the same deal you already have with your bank.

You don't personally guard the cash in a vault.

You have a claim on it, and the company handles the rest for you.