What degree of detail do I have to keep in order to properly declare my taxes regarding cryptocurrencies? Every operation, investment or ICO has to be recorded? I also have done a bit of mining and I have no idea on taxes regarding that.
It depends on what country you are from. If you are American, then technically I think you are supposed to track every trade. I think earnings from mining would be income. It is probably the same as someone getting paid in Bitcoins for a job. I probably have to do the same thing for signature campaign earnings. Prior to this year, I think trades could be claimed as like kind exchanges.