Consider you invest Rs X in Bitcoin through coinsecure or any Indian exchange. And after a period of time, you sell 2X btc in the exchange, then the addition 1X btc is your increase in capital revenue. Its got a tax amount of 30% of the income. File that and we are safe.

Heard a news that the RBI/Govt(not sure,but a central authority) has requested for exchanges to provide them with the list of profiles who had done transactions of $2000 and above from 2013 onwards. This means that they are coming back after almost 5 years and if we dont keep a regular check/history of the transactions, then we maybe in deep sh*t.

Always remember that, the Govt is yet to approve or reject Crypto. It can go either way. Although its highly unlikely that they can ban it since we own 10% of the entire transactions.