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.
You should keep track of all your purchases,sales and profits of your cryptos.If you have traded on exchanges,it is easy to get a statement.You can determine the profits and pay taxes acordingly
Check this site
https://cointracking.info