10 bitcoin-linked ETFs are waiting in regulatory limbo, according to JPMorgan. The bank described such a fund as the "holy grail" for the cryptocurrency. It's not clear if or when a bitcoin-linked exchange-traded fund will go live, but it is clear that such a fund would be a game-changer for the digital currency. A bitcoin ETF has been viewed as a natural next step in bitcoin's maturation as an asset and could precipitate the entrance of more retail investors into the crypto market.