https://www.theguardian.com/technology/2021/feb/01/price-of-bitcoin-jumps-after-elon-musk-says-it-is-a-good-thing

Cryptocurrency rises above $38,000 after Tesla boss changes his biography on Twitter to ‘#bitcoin’

The price of bitcoin rose on Monday after Elon Musk, the billionaire Tesla chief executive, said he was a “supporter” of the cryptocurrency.