The exchange I buy through just asked me this...

Hi all, I just received an email (2nd Feb actually) from the exchange I use to buy btc with. Essentially it's a demand for info on where I have been sending btc with the threat of account freeze if I do not squeal. So far I have reacted by sending everything I had remaining with them elsewhere... I can't help wondering the 'what next ' strategy, particularly if I would like to keep buying through this company. Should I tell them the addresses belong to me? Should I not reply and accept being frozen out of the exchange? Is this actually a phishing scam?

Here is what they have said.....

"Regulations in the UK require that we maintain up-to-date information about our clients and their account activity regarding self-custody wallets. A self-custody wallet is one where you manage your private keys yourself, for example a hardware wallet.

Please reply to this email and answer the following questions:

Please confirm that you own or are in control of the self-custodial wallets that you are sending and receiving from.

If you do not own or control the self-custodial wallets that you are sending and receiving from, please detail which addresses these are, who the owner or controller is, and provide their residential address. After your reply, our support team will make sure to clarify any questions you have and ensure the process runs smoothly

If we do not receive a response by February 23, 2024, we will have to place a lock on your account until we obtain the information we requested."