Bitcoin has risen above $50,000 (€40,000) to a new record high, building on a rally fuelled by signs that the world's biggest cryptocurrency is gaining acceptance amongst mainstream investors.
Bitcoin hit a new high of $50,602, and was last up 5 per cent at $50,300. It has risen around 72 per cent so far this year, with most of the gains coming after electric carmaker Tesla said it had bought $1.5 billion in bitcoin.
It also said it would accept the currency as payment.
But Tesla was only the latest in a string of large investments that have vaulted bitcoin from the fringes of finance to company balance sheets and Wall Street dealing desks, as US firms and traditional money managers have started to buy a lot of it.