Mhan, what are you talking about? Bitcoin wasn't originally made with some sort of maneuvers like mixers and conjoin as you may have it, these services came in after several years of yearning/struggle for privacy.  Not until several other mixers were introduced with a different motive, this time, to collect dirty coins, swap, mix and release cleans ones.. It's somewhat impossible for the government to investigate where and how those coins were traded, since the mixers are anonymously rooted.

The authorities can only target and hurt Bitcoin indirectly by taking down services that allows privacy, but cannot regulate the Bitcoin network.

- Jay -
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