Bitcoin jumps above $8,700 to record high as largest US bitcoin exchange adds 100,000 users

Bitcoin is getting a Black Friday boost.

The digital currency climbed above $8,700 to a record high Saturday following increased investor interest around the U.S. Thanksgiving holiday and Black Friday shopping.

Bitcoin rose more than 6 percent to a record high of $8,725.13, according to CoinDesk, trading around $8,674 midday on Saturday. Another digital currency, ethereum, also hit an all-time high of $485.18, according to CoinMarketCap.

"The move appears to be retail driven," said Brian Kelly, a CNBC contributor and CEO of BKCM, which runs a digital assets strategy.

The largest bitcoin exchange in the U.S., Coinbase, added about 100,000 accounts between Wednesday and Friday — just around Thursday's Thanksgiving holiday — to a total of 13.1 million. That's according to public data available on Coinbase's website and historical records compiled by Alistair Milne, co-founder and chief investment officer of Altana Digital Currency Fund. Coinbase had about 4.9 million users last November, Milne's data showed.

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