I have always been sceptical that the whole crypto currency business is no more than a scan. Conventional currencies have always been backed, initially by gold, and more latterly by the issuing nations perceived wealth, whatever economic criteria are used to assess that and establish trust in the currency. Crypto currencies simply do not have that. The fact that Mr Trump has enthusiastically seized upon Crypto Currency, set one (or more) up and has rapidly become extremely wealthy from them completely reinforces them as a scam. Incidentally, I am the only one who finds it ironic that the wealth he has gained is always expressed as a conventional currency (US $). Mind you, I suspect all profits are rapidly converted into, and salted away, as hard cash!