The only way I think you could get by from this felony is to keep them on very long term. So long that it may be forgotten. But still, it may.
Yea not happening. If it were in the real world where data was kept in physical records, possibly, since there are thousands of records that could be added monthly and so, such record may just be buried, but since it's stored on the internet where if you know how to, can be simply looked up, letting it rot for a long time isn't a solution.
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Even if they do use it in its form as BTC, they'd still be traceable you know? And afaik, exchanges blacklist said marked wallets so that they aren't able to use their services. As for e-commerce stores that accept BTC, they also probably have some sort of setup for that, and even if they don't, there'd be more of it in the future.
Already owned addresses? And who promises me that he won't steal me?
And that's why there are trusted mixers out there. They basically ask for a fee when mixing your coins, making quite a profit in the long run. Ofc, there are mixers that are scams, but mixers have been out there for a long time already that you can already look up those trusted and those that are not.