What it actually is
You send it dollars. It holds them. You use them to buy crypto. It holds that too.
That last part is the part people miss. When crypto sits on an exchange, the exchange is holding it, not you. You have an entry in their database saying it is yours.
If that company fails, freezes, or is dishonest, your access goes with it. This has happened, repeatedly, to very large companies that looked completely safe.
The identity check
Any legitimate exchange will ask for identity documents before you can move real money. A photo of your ID, sometimes a selfie, sometimes proof of address.
This is normal and it is required by law in most countries. It is called KYC, which just stands for "know your customer."
An exchange that does not ask for this is not being generous with your privacy. It is telling you something about how it operates.
How to choose one: the questions, not the answer
We are not going to name one. Here is what to check instead.
- Is it allowed to operate where you live? Some are not, and you find out when you try to withdraw.
- How long has it existed, and what happened the last time crypto crashed? Search its name plus the word "withdrawal." Read the complaints.
- Can you get real money out? Test this with a small amount early. Not later, when it matters.
- Does it offer leverage front and center? A platform pushing borrowed money at new users is optimizing for something other than your outcome.
- Are there fees for withdrawing? There always are. Know them before, not after.
Where to keep it
Small amounts: on a reputable exchange with two-factor on is fine, and it is honestly safer than the alternative for most beginners.
Larger amounts: a wallet you control. But understand the trade first. Holding it yourself means nobody can freeze it, and nobody can recover it. If you lose the recovery phrase, it is gone forever. No support line. No reset.
Most beginners lose more money to losing their own keys than to exchange failures. Do not hold it yourself until you genuinely understand K7.