First major upgrade in four years set to accelerate Bitcoin innovation After briefly eclipsing all-time highs on shocking inflation figures, Bitcoin settled down to finish the week with 2% losses as the long-awaited Taproot upgrade was activated At its peak on Wednesday, Bitcoin flirted with the $69K level. Within a few hours however, fresh fears of an Evergrande-induced financial collapse swept over the market, dragging cryptoassets down alongside the S&P 500.