"One thing I know a lot about is the legal definition of fraud," Justice Arthur Engeron said as he gaveled court into session prior to the start of opening statements.

Engoron opened the proceedings after allowing cameras in to document the scene in the courtroom: Trump, arms folded, flanked by his legal team; Engeron on the bench; and throngs of reporters and spectators in the gallery.

"I've promised to do my best despite my lame attempts at humor," Engeron said in a brief opening statement. "I take my job very seriously."

The trial is expected to last through Dec. 22, Engeron said, and suggested he would attempt to keep a low profile after today.

"For the next three months, I hope the only words I will mutter are 'Sustained,' 'Overruled,' and 'Let's take a 10-minute break,'" he said.

Opening statements are underway in former President Trump's $250 million fraud trial.

Trump is seated between his attorneys Clifford Robert, Alina Habba and Christopher Kise.

Trump and his co-defendants face a bench trial, meaning that the sole arbiter of the case is Judge Arthur Engoron instead of a jury.

Former President Trump has taken a seat in the courtroom for the start of the trial.

"The crime is against me," he told reporters outside the courtroom before he made his way inside.

He denounced the case in now-familiar terms, criticizing state Attorney General Letitia James as she sat inside the courtroom.

Trump also accused Judge Arthur Engoron of failing to account for the full value of his real estate portfolio, asserting his Mar-a-Lago estate is worth "50 to 100 times more" than the judge's decision for partial summary judgment said last week.

"We have other properties, the same thing. So he devalued everything," Trump said. "We have among the greatest properties in the world. and I have to go through this for political reasons."

Engoron decided Trump's statements of financial condition were fraudulent, but Trump said, "We have a clause in the contract that says, essentially, buyer beware."

Former President Trump, speaking to reporters on his arrival at the lower Manhattan courthouse, said the trial is a witch hunt resulting from his standing in the presidential polls.

"This is a continuation of the greatest political witch hunt of all time," he told reporters outside the courtroom.

Trump said he is innocent of the accusations and that his portfolio has a much higher value than what the attorney general alleges.

The state's expert witness, Michiel McCarty, calculated that Donald Trump's lenders lost $168 million in potential interest between 2014 and 2023, according to a report he presented in court.

McCarty's testimony appeared to reinforce a central tenet of New York Attorney General Letitia James' case: that Trump's misrepresentations in his financial statements cost banks potential earnings from interest, even if the banks made money on the loans.

State attorney Kevin Wallace directed McCarty to a footnote in Judge Engoron's earlier summary judgment order about the concept of lost interest, in which Engoron said, "The subject loans made the banks lots of money; but the fraudulent SFCs [Statements of Financial Condition] cost the banks lots of money. The less collateral for a loan, the riskier it is, and a first principle of loan accounting is that as risk rises, so do interest rates. Thus, accurate SFCs would have allowed the lenders to make even more money than they did."

McCarty, who said he agreed with this assessment, ultimately found that banks lost a total of $168,040,168 in potential interest from loans related to four of Trump's properties in Miami, New York, Chicago, and Washington, D.C.

Trump attorney Chris Kise fiercely objected, arguing that McCarty was testifying about facts not established during the trial. During questioning, state attorneys declined to ask a Deutsche Bank executive if the bank would have still done business with Trump had they known his financial statements were inflated.

"They are not ill-gotten gains if the bank does not testify it would have done it differently," Kise said.

"I decided these were ill-gotten," the Judge Engoron replied.

Following Wallace's direct examination of McCarty, defense attorney Jesus Suarez began his cross-examination.