What about generating your own wallet? Are EU citizens required to report that when they do?
I have no idea how these new rules will play out, but I can image how exchanges might be forced allow only transactions with "sanctioned" wallets (i.e. traceable to person), and international exchanges not playing complying being blocked from to the EU market.
Afaik we also don't have taxable events, we just have income tax.
The US does have a realized capital gains tax.
Assets contained within a mattress are not realized capital gains, no matter how much their value increases while sitting there.
First I hear of that. In Germany, you have to report gains you got from trading/selling (both crypto-to-fiat and crypto-to-crypto), but not simply buying any. Do you have a source?