The largest cryptocurrency is on a tear after trading closer to $5,000 at the start of May and has more than doubled since mid-December. Still, it remains a long way off its 2017 peak that topped $19,000.

The future of virtual currencies remains a contentious debate amid heat from regulators and news of a hack on one large exchange. New York Attorney General Letitia James last month alleged an $850 million cover-up by the companies behind virtual currency Tether and Bitfinex — one of the world’s largest crypto exchanges.

Separately, Binance last week said hackers withdrew 7,000 Bitcoins worth about $40 million via a single transaction in a “large scale security breach,” the latest in a long line of thefts in the digital currency space.