I haven't made a single transfer of that size but have made many smaller transfers over the last years from Germany and have never had a problem. If anything

I haven't made a single transfer of that size but have made many smaller transfers over the last years from Germany and have never had a problem. If anything I feel like investing in crypto is indirectly incentivized in Germany given that you basically don't owe tax on profits if you buy and hold for over a year without doing anything else.