Cryptocurrency investors in India have to bear in mind that the government doesn't consider them legal tender. But they needn't worry too much because Jaitley has only said that the government will look to eradicate their usage for illegitimate activities, nothing about investing in them.
FM stresses that the government does not consider cryptocurrencies as legal tender and will take measures to curb illegitimate transactions funded by crytocurrencies
Good news for Indian investors as Indian government stays neutral in matters of cryptocurrency and Bitcoin for 2018-19 fiscal year.