RE: IRS has been tracking Bitcoin usage since 2015 & List of Coins that Can Save You from Spies.
I think this is the latest guidance:
https://www.gov.uk/government/publications/revenue-and-customs-brief-9-2014-bitcoin-and-other-cryptocurrencies
RE: IRS has been tracking Bitcoin usage since 2015 & List of Coins that Can Save You from Spies.