Your bank asked you to prove where your crypto came from

They are asking for two things, and the letter probably only named one. They want your own explanation of how you came to hold what you hold. And they want to be able to check it without taking your word for it.

Almost everyone sends the second thing without the first: an export, thousands of rows, no explanation of what it is meant to show. That is the most common reason a transfer is rejected and the account frozen, and it has nothing to do with whether your money is clean.

A file that cannot be read is not judged. It is declined.

This is the part worth understanding before you start. Nobody reads your file closely and then decides against it. It arrives on a desk alongside mortgages and business accounts, it would take days to make sense of, and saying no costs the bank nothing while understanding it costs a week.

There is one exception, and it is worth knowing which side of it you are on. Above a million dollars or so, the arithmetic reverses: some private banks will put one person on a complex case full time for weeks, because the relationship is worth that much to them. If you are not in that bracket, nobody is being assigned to your file, and it has quietly joined the “unsolvable problems” folder. And if you are, those weeks are weeks of questions coming back to you.

So the question is not how much proof you can send. It is how quickly someone can follow what you are telling them.

Your history is in thirty places, and none of them agree

Three exchanges, one of which has closed. A hardware wallet. A period where you tried some DeFi. Coins on four chains with a few addresses on each. That is not an unusual crypto history, and it is already thirty separate places where part of the answer lives.

No two of them record your transactions the same way. Different columns, different date formats, different names for the same coin, different transaction types, a withdrawal on one platform and a deposit on another that are the same movement and look nothing alike. Nobody handed you a single statement because there is no single statement to hand you.

None of it felt complicated while you were exploring web3 and chasing the next big opportunity. What lands on the bank’s desk, though, has more moving parts than a small multinational enterprise, without the finance department that usually comes with one.

Why your own export does not settle anything

The rows came from you. That is the whole problem, and it does not improve with volume. A bank is required to rely on something it can verify independently, and a file that only contains what the customer supplied cannot check itself.

It is not personal either. An export has always been easy to change without leaving a mark. Doing it convincingly once took some skill; with AI to hand it takes seconds and none. That is why no reviewer should take an export at face value, however honest the person who sent it.

Plenty of banks will still ask for an export anyway. Why is a fair question, and there is no good answer to it. Send it if it is asked for. You may get lucky.

There are two ways round it, and neither is an accusation. Some banks will ask to watch you pull the file. Others, more advanced, will ask for a read-only key from the exchange, which lets them download the history themselves and cannot trade or withdraw. If you are asked for either, it is the fastest route through, not a sign that you are under suspicion.

Your wallet addresses need nothing of the kind. Anyone can look those up, which is exactly why the list of them is the single most valuable thing you can provide.

The two things only you can produce

Back to what the bank actually wanted when they asked for “proof of funds”.

1. The list of every wallet and crypto exchange account you have ever used, including the empty ones and the platforms that no longer exist.
2. Two pages in your own words about how you started, what you bought, what happened since, and what you want to do now. It does not need to be polished. It needs to be true and to match what the data shows.

The finished file is longer than that, and what goes in one, page by page is published openly. Those two pages, however, are the part that cannot be reconstructed without you, and they are the part most files are missing.

The sum at the end of it

Whatever you have written, it has to survive one piece of arithmetic. What you put in, plus what it grew into (your gains), plus anything that arrived from somewhere else, has to add up to what you hold today.

It is the gains that surprise most people. In a long crypto history the larger part of the wealth was usually never money you paid in: it grew there, along with whatever the holdings earned on the way. Unless that is separated out and shown, the balance looks like money that appeared from nowhere.

If the sum does not come out, the difference is the conversation. Name it yourself and it is a prepared answer. Let them find it and it is the reason you are turned down.

Once you have provided those two things, your story gets checked. The automatically checkable half can be rebuilt from the chain, with or without you. The crypto exchange half cannot, so expect further questions there.

What a good file actually buys you

Not a yes, but a better chance of being read at all rather than parked; a better chance of being accepted; and, where questions remain, questions that are few and specific, pointed at the two or three places where an answer is genuinely still needed, instead of a request to send everything again.

Questions like that you can answer in an afternoon. That is what closes a file.

And if the answer is still no, you are not left with nothing. The same file is something to put behind a complaint or an appeal, where that route is open to you, and in places where crypto is regulated a refusal is expected to come with reasons. It is also what you take to the next bank, and some are markedly more comfortable with crypto than others; CashoutReady works with several of them and can make an introduction where the holdings are large enough.

Check whether your case is ready. It is free, a few questions, and it tells you which of those thirty places is going to be the problem before you spend a weekend finding out.