New York (AFP) – US prosecutors have requested that a court sentence disgraced crypto mogul Sam Bankman-Fried to between 40 and 50 years imprisonment for massive fraud that cost customers $8 billion, court documents showed Friday. The founder and CEO of the FTX cryptocurrency exchange platform will face sentencing on March 28 after being found guilty in early November of seven counts including fraud, conspiracy and money laundering. “A sentence of 40 to 50 years’ imprisonment… is necessary to reflect the seriousness of the defendant’s crimes,” the prosecution’s sentencing memorandum said.  B…