Before revision:  However, in the business-as-usual scenario, emissions sum up to 2 gigatons until 2100, an amount comparable to 6 \% of global emissions in 2018.
After revision:  However, in the business-as-usual scenario, emissions sum up to 2 gigatons until 2100, an amount comparable to 6 \% of global emissions in 2019. The Bitcoin price spike at the end of 2020 shows, however, that progressive development of market capitalization could yield an electricity consumption of more than 100 TWh already in 2021, and lead to cumulative emissions of over 5 gigatons by 2100.