The Indian government has issued repeated warnings against investing in digital currencies, saying these were like "Ponzi schemes" that offer unusually high returns to early investors.
The government panel, headed by finance secretary Subhash Chandra Garg, recommended a fine of up to Rs 25 crore ($3.63 million) and imprisonment for up to 10 years for anyone who mines, generates, holds, sells, transfers or issues cryptocurrency.
"There is no underlying intrinsic value of these private cryptocurrencies," the panel said in its report submitted to the finance ministry.
Private digital currencies were created by non-sovereigns and lacked the attributes of currency, it said. Industry officials expressed dismay and the hope the government would not introduce a ban.