The world's largest and most popular cryptocurrency last traded down more than 6% at $38,293 after holding the $40,000 level for most of the Asian and London sessions.
But Societe Generale questioned the comparison on Thursday: "Bitcoin has clearly 'outshone' gold both to the upside and now also to the downside. But with such a gap in volatility and amplitude, does it make sense to compare the two assets at all?"
Bitcoin stabilised after Wednesday's wild gyrations that saw the world's most popular cryptocurrency lose almost a third of its value in one day before recovering much of the losses.
China, which powers nearly 80 percent of the global cryptocurrency trade, relies on a particularly polluting type of coal, lignite, to power some of its mining.
The sharp declines came after China banned financial and payment institutions from providing cryptocurrency services.
Bitcoin dropped to $30,066, the lowest since late January. It was last down 22% at $33,502. The most popular cryptocurrency posted its largest one-day loss since March 2020.
For an asset class that has surged this year, with dogecoin up about a hundredfold, ether up more than fourfold and bitcoin gaining 45%, some are beginning to call time on the wild ride.
Ecoark intends to convert it into dollars, but Lohstroh plans to hold the bitcoin he mines, which he believes will one day underpin a new global financial system.