> How are people going to buy drugs in the cashless future?

Barter (including exchange of services as well as goods).

If the US$100 and US$50 are eliminated, the black market will switch to gold as its reserve currency, and operate as a de facto currency exchange for customers using other forms of payment.

Organized crime hawaladars will back a Bitcoin-like electronic transfer system, because actually moving around the physical gold too often is a pain in the ass, and exposes the shipments to additional risks.

Bitcoins? Dummy companies?

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