Currently there's almost no information or regulatory procedure on whether you can accept cryptocurrencies to allow your investors to subscribe to your companies shares. The idea methodology I would suggest would be to contact a lawyer to be sure and to get more information on the legality of this matter.  A law firm that I can recall that has researched prominently on Bitcoins, their legality of usage and taxation matters (if you would like to know on this as well) would be Nishit Desai Associates. I would suggest you directly contact them to know if the current status of accepting Bitcoins for purchase of shares holds good after the announcement of it not being a legal tender. As I can recall, most of the stocks that are traded on NSE and BSE (And other private exchanges) happen through an authorized Demat account in a bank. I'm not sure if other modes are acceptable if your company is publicly listed.