Several significant occurrences this year have prompted crypto markets to spin and investors to question the industry's trustworthiness.
The complaint against Caroline Ellison of Alameda and Gary Wang of FTX alleges that FTX's exchange token, FTT, is an investment contract.
FTX declared bankruptcy last month, claiming more than $10 billion in liabilities.
Bankman-Fried has been charged with a crime in the United States, and the Bahamas expects to extradite him if the United States requests it.
The founder of the cryptocurrency exchange tweeted his support for influencer Ran Neuner's revival idea, sending the battered tokens up as much as 47%.
The plan to resume withdrawal services has been approved by the new FTX trading management team, the Japanese subsidiary announced on Thursday.
Sam Bankman-Fried expressed sadness about his exchange's failure in a highly anticipated interview at Wednesday's Dealbook Summit, but held to the notion that it was a bad bet.
FTX provided BlockFi with a $400 million line of credit earlier this year.
The complaint against FTX's founder comes as another cryptocurrency company seeks bankruptcy protection.
Former SEC and CFTC enforcement chiefs are being recruited by a cryptocurrency exchange to assist in determining what went wrong and communicating with regulators.
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