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by EthanHeilman 3727 days ago
It depends on how exactly you use Bitcoin. If a user performs an in-person anonymous Bitcoins-for-cash swap to fund an address and never uses that address, then it is as private as that initial funding transaction. If you pay for things with Bitcoin, even with the use of tumblers, deanonymization is trivial for governments and corporations.

Bitcoin is the transparent currency, not the anonymous currency.