"As regards non-fiat cryptocurrencies, I think we are not comfortable," Sen said addressing the India Fintech Day conference here.
Elaborating on what is a non-fiat cryptocurrency, Sen said, "Bitcoins for example. That's a private cryptocurrency."
The fiat cryptocurrency is a digital currency which will be issued by the Reserve Bank of India (RBI) in place of the physical one at present, he said, adding that the central bank is studying this aspect at present.
"Right now, we have a group of people who are looking at fiat cryptocurrencies. Something that is an alternative to the Indian rupee, so to speak. We are looking at that closely," Sen said.
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According to some media reports, there has been a growing number of investors in such currencies over the last few years, especially with the huge spurt in the value of a few of them since the Donald Trump administration came in the US.
"Any user, holder, investor or trader dealing with virtual currencies is doing it at their own risk," the RBI had cautioned on its website in February this year.
The RBI has been repeatedly flagging concerns on virtual currencies like Bitcoins, stating that they pose potential financial, legal, customer protection and security-related risks.
"Value seems to be a matter of speculation. Legal status is definitely not there. While this is a purported objective of a VC, it puts a natural limit for its progression. And finally, the usage of VCs for illicit and illegal activities has been reported as uncomfortably large," Gandhi had said.
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