• Following his arrest in the Bahamas on Monday, FTX founder Sam Bankman-Fried faces the potential of a lengthy prison sentence.
• FTX collapsed last month following a liquidity crunch at the crypto exchange.
• "It is inconceivable to me that the Justice Department would have charged this case unless they were confident that they could extradite him," Renato Mariotti, a former federal prosecutor, told CNBC.

Sam Bankman-Fried's arrest in the Bahamas on Monday marks the beginning of a new chapter in the FTX saga, one that will pit the former cryptocurrency billionaire against the Southern District of New York.

CNBC's Andrew Ross Sorkin reported that the charges against Bankman-Fried include wire fraud, wire fraud conspiracy, securities fraud, securities fraud conspiracy and money laundering.

The indictment remained sealed until Tuesday morning. Neither the Attorney General of the Bahamas nor the Royal Bahamas Police Force would confirm the nature of the charges against Bankman-Fried.

The SEC has initiated a separate set of charges against Bankman-Fried. The agency filed a civil complaint against him Tuesday, alleging that the ex-CEO of FTX engaged in a "scheme to defraud equity investors in FTX." The filing said Bankman-Fried raised more than $1.8 billion from investors and that "unbeknownst to those investors ... Bankman-Fried was orchestrating a massive, years-long fraud, diverting billions of dollars of the trading platform's customer funds for his own personal benefit and to help grow his crypto empire."

The charges could land Bankman-Fried in prison for decades, legal experts told CNBC. But before he ever serves time, U.S. prosecutors have to secure an extradition from the Bahamas back to New York.

An effort to extradite

"It is inconceivable to me that the Justice Department would have charged this case unless they were confident that they could extradite him," Renato Mariotti, a former federal prosecutor, told CNBC.

Mariotti anticipates an extradition will take weeks to complete.

"The statement by the Bahamian government suggests that they're going to cooperate," Mariotti said.

The U.S. and the Bahamas have had an extradition treaty in place since 1931, with the most recent iteration codified in 1990. Because Bankman-Fried hasn't been convicted in the Bahamas yet, U.S. prosecutors had to secure an arrest warrant and provide sufficient evidence to the Bahamas that he had committed a crime.

Extradition is the first step in a process that could take years. Given the magnitude of Bankman-Fried's alleged crimes, prosecutors and regulators will be pursuing concurrent cases around the world.

A trial in the U.S. "may not occur for years," Mariotti said.

"The more that they charge, the bigger that the case is, the more time they're going to need to get in motion," he said. "I would say late 2023 is the earliest a trial would occur."

Prosecutors could argue that FTX breached its fiduciary duty by allegedly using customer funds to artificially stabilize the price of the company's self-issued FTT coin, Mariotti said.

Intent is also a factor in fraud cases, and Bankman-Fried insists he didn't know about potentially fraudulent activity. He told CNBC's Andrew Ross Sorkin at the New York Times DealBook conference that he "didn't knowingly commingle funds."

"I didn't ever try to commit fraud," Bankman-Fried said.

In prepared testimony for the House Financial Services committee, new FTX CEO John Ray confirmed that commingling of funds had occurred between FTX and Alameda Research, Bankman-Fried's hedge fund.

Other legal trouble

Beyond the criminal charges set to be unveiled Tuesday morning and the civil case brought by the SEC, Bankman-Fried is also facing possible civil actions by the Commodity Futures Trading Commission and state banking and securities regulators, said Richard Levin, who chairs the fintech and regulation practice at Nelson Mullins Riley & Scarborough.

The CFTC and lawmakers have begun their probes into FTX and Bankman-Fried, who told Sorkin he was down to his last $100,000.

Lawmakers also expressed their satisfaction at Bankman-Fried's arrest. Sen. Sherrod Brown, D-Ohio, who chairs the Senate Committee on Banking, Housing, and Urban Affairs, applauded both the Justice Department and Bahamian law enforcement "for holding Sam Bankman-Fried accountable."

Rep. Maxine Waters, D-Calif., chairwoman of the House Financial Services Committee, echoed that sentiment but expressed disappointment that Bankman-Fried was arrested before his House testimony, which was scheduled for Tuesday.

"I am surprised to hear that Sam Bankman-Fried was arrested in the Bahamas at the direction of the United States Attorney," Waters said in a statement.

"[The] American public deserves to hear directly from Mr. Bankman-Fried about the actions that've harmed over one million people," Waters said.

Prior to his arrest, Bankman-Fried had also been invited to appear before the Senate at a hearing Wednesday.

It's unclear whether the SEC or the CFTC will take the lead in securing civil damages.

"The question of who would be taking the lead there, whether it be the SEC or CFTC, depends on whether or not there were securities involved," Mariotti told CNBC.

SEC Chairman Gary Gensler, who met with Bankman-Fried and FTX executives earlier this year, has said publicly that "many crypto tokens are securities," which would make his agency the primary regulator.

But many exchanges, including FTX, have crypto derivatives platforms that sell financial products such as futures and options, which fall under the CFTC's jurisdiction.

"For selling unregistered securities without a registration or an exemption, you could be looking at the Securities Exchange Commission suing for disgorgement — monetary penalties," said Levin, who's represented clients before both agencies.

Investors who have lost their savings aren't waiting. Class-action suits have already been filed against FTX endorsers, including comedian Larry David and football superstar Tom Brady. One suit excoriated the celebrities for allegedly failing to do their "due diligence prior to marketing [FTX] to the public."

FTX's industry peers are also filing suit against Bankman-Fried. Failed lender BlockFi sued Bankman-Fried in November, seeking unnamed collateral that the FTX founder provided for the crypto lending firm.

FTX and Bankman-Fried had previously rescued BlockFi from insolvency in June, but when FTX failed, BlockFi was left with a similar liquidity problem and filed for bankruptcy protection in New Jersey.

Bankman-Fried has also been sued in Florida and California federal courts. He faces class-action suits in both states over what a California court filing called "one of the great frauds in history."

The largest securities class-action settlement was for $7.2 billion in the Enron accounting fraud case, according to Stanford research. The possibility of a multibillion-dollar settlement would come on top of civil and criminal fines that Bankman-Fried faces.

A life behind bars

If the DOJ were able to secure a conviction, a judge would look to several factors to determine how long to sentence him.

Based on the size of the losses, if Bankman-Fried is convicted on any of the fraud charges, he could be behind bars for years — potentially for the rest of his life, said Braden Perry, a partner at Kennyhertz Perry who advises clients on anti-money laundering, compliance and enforcement issues.

But the length of any potential sentence is hard to predict, said Perry, who was previously a senior trial lawyer for the CFTC, FTX's only official U.S. regulator.

Federal sentencing guidelines follow a numeric system to determine the maximum and minimum allowable sentence, but the system can be esoteric. The scale, or "offense level," starts at one, and maxes out at 43.

A wire fraud conviction rates as a seven on the scale, with a minimum sentence ranging from zero to six months.

But mitigating factors and enhancements can alter that rating, Perry told CNBC.

"The dollar value of loss plays a significant role. Under the guidelines, any loss above $550 million adds 30 points to the base level offense," Perry said. FTX customers have lost billions of dollars.

"Having 25 or more victims adds 6 points, [and] use of certain regulated markets adds 4," Perry said.

That means Bankman-Fried could be facing life in federal prison, without the possibility of supervised release, if he's convicted on just one of the offenses that prosecutors will reportedly pursue.

If convicted, his sentence could be reduced by mitigating factors.

"In practice, many white-collar defendants are sentenced to lesser sentences than what the guidelines dictate," Perry said. Even in large fraud cases, that 30-point enhancement previously mentioned can be considered punitive.

By way of comparison, Stefan Qin, the Australian founder of a $90 million cryptocurrency hedge fund, was sentenced to more than seven years in prison after he pleaded guilty to one count of securities fraud.

Roger Nils-Jonas Karlsson, a Swedish national accused by the United States of defrauding more than 3,500 victims of over $16 million, was sentenced to 15 years in prison for securities fraud, wire fraud and money laundering.

CNBC's Andrew Ross Sorkin contributed to this report.