Bitcoin rose 5.58% to $21,044 at 2344 GMT on Saturday, adding $1,113 to its previous close.
Bitcoin, the world’s biggest and best-known cryptocurrency, is up 27.6% from the year’s low of $16,496 on Jan 1.
Ether, the coin linked to the ethereum blockchain network, surged 7% to $1,552.6 on Saturday, adding $101.6 to its previous close.