Bitcoin falls back below $67,000, rapidly giving back Wednesday's gains

The declines are coming as the Nasdaq tumbles nearly 2%, led by a post-earnings selloff in Nvidia. What to know : Blockchain investigator ZachXBT said a senior Axiom Exchange employee allegedly misused internal tools to access sensitive user data, track private wallets and potentially trade memecoins using inside information. Axiom said it was “shocked and disappointed” by the allegations and removed access to those systems. It pledged to continue investigating and hold the responsible parties to account. The claims highlight growing scrutiny of trading practices and data misuse in the crypto industry.