The only transaction that is going to appear is currency->BTC. After that, there are many efficient ways of obfuscating a BTC->BTC transcation. There are legiti

The only transaction that is going to appear is currency->BTC. After that, there are many efficient ways of obfuscating a BTC->BTC transcation. There are legitimate uses of BTC, so nothing necessarily suspicious. However, if you want to receive bribes, you just create a new wallet, you receive the bribes in BTC and either change them somehow in dollars or pay a premium to receive some services directly paid in btc (I am sure many people would be happy to receive BTC payment at a 30% discount). Tax evasion works the same: you receive some payments that you do not declare in BTC. It works exactly the same way people use cash to evade taxes, except that here you don't have to transport luggages full of banknotes. Another feature of BTC is that it can't be seized. Cash, gold, paintings, they all can be. BTCs are much easier to protect.