To his followers, Roger Ver is known as Bitcoin Jesus, a charismatic advocate of the cryptocurrency that is once again captivating investors with record-breaking gains. But to the Internal Revenue Service, Ver symbolizes a new target in the digital age: a crypto holder suspected of failing to pay taxes after selling tokens.US prosecutors charged Ver this year with evading more than $48 million in taxes for selling $240 million in tokens. It’s the most prominent case dealing solely with tax fraud...