Hi,

Question about cashing in BTC in EU. (asking fresh advice after scouring through the forums)

I've been hodling a handful of BTC for almost 10 years, with a few shitcoin excursions in the early years.

Since then, just hodled quite conservatively.

Here's the complex part:

I bought almost all of them with cash from an ATM at < 1000e.

I have no receipts, no proof of purchase and I have mostly self-custodied them on a multiple hardware wallets since.

Funds have moved wallets multiple times and I don't have all the transactions in between then and now. I do have some records from old exchanges but not a complete history.


That said, I think I might be able to control my 'first' hardware wallet. As a privacy proponent I also mixed some the coins a few years ago.

So now I'm in a situation where I need to grudginly cash-in some of it to stay warm in the house.
I need to get the funds in a bank account so I can pay bills, so I am not looking for p2p cash deals.

My understanding is that a traditional bank will frown at this to say the least.

What are my options? Does anyone have any experience on how to go about this in a legitimate way?

If bank, what kind of proof do they need in this case?
How to go about 'proving ownership' or what is the procedure both with the bank and the tax folks?

Any legal, professional advice, resources, links or other information would be helpful. Based in EU.

Also if anyone knows any technical tools that could help me make sense of my transaction history in a secure way, would be great.

Thanks all,