An attorney for Donald Trump's adult sons, Eric Trump and Donald Trump Jr., added a brief opening statement of his own, defending his clients from accusations of wrongdoing.

"There was never a material misrepresentation made by Eric Trump or Donald Trump Jr.," said Clifford Robert, the attorney for Trump's adult sons, who help run the Trump Organization.

Robert said he disagrees "with just about everything" the state's prosecutor said in his opening remarks, and took aim at the state's star witness.

"Their major linchpin is Michael Cohen, a guy who lies to everyone," Robert said of the former Trump attorney.

Attorney General Letitia James "is setting a very dangerous precedent for any business in the state of New York," warned Trump attorney Alina Habba in her opening statement.

Habba told the court she hadn't planned to make opening remarks, but that she felt moved to speak after hearing the state present its own opening statement. Habba accused the attorney general of targeting Trump before taking office, claiming the investigation and lawsuit were personal in nature.

"We are attacking a sitting president and two of his children and his employees for a statement of financial condition which is frankly worth less than what they are worth," Habba said.

Habba reiterated many of the points made earlier by co-counsel Christopher Kise, highlighting the fact that "these lenders made money," and arguing that "real estate is malleable -- the values change."

After Habba concluded her remarks, Judge Engeron engaged her in a series of follow-up questions, asking about her claim that the property appraisals at issue were "undervalued" by prosecutors.

Habba replied that "the Trump brand is worth something."

Former President Trump's defense counsel will present a "very different picture of the evidence" than the prosecution alleges, and will demonstrate that "there are many ways to value assets," according to opening remarks from Christopher Kise, Trump's lead attorney.

"We think the evidence is going to establish … President Trump has made billions of dollars building one of the most successful real estate empires in the world," Kise said, reiterating sentiments he conveyed in pretrial motions.

Kise offered a glimpse into the former president's defense, including plans to present testimony from a New York University professor who will explain that "there is no one generally accepted procedure to determine the estimated current value" of a property.

Other defense witnesses, including four Deutsche Bank officers who were involved in approving Trump's loans, will explain how they were able to craft their own independent risk analyses meant to mitigate the claims of fraud that are core to the state's case.

"Anyone committing fraud does not tell the other side, 'Please do your own analysis,'" Kise said regarding Trump's instructions to lenders.

Kise also previewed plans to undermine the state's key witness, former Trump attorney Michael Cohen, who Kise said has "lied to everyone and anyone he has come in contact with."

Kise reiterated the defense's claim that Trump did not commit fraud and that there were no victims of his alleged conduct.

"The attorney general has no case," Kise said.

Prosecutors intend to prove in the coming months that "each defendant engaged in repeated, persistent, illegal acts in conduct of business," according to the opening statement from Kevin Wallace of the attorney general's office.

Referring to Judge Engoron's partial summary judgment last week, Wallace said that "the people have already proven" that former President Trump used "false, misleading" statements that were "repeatedly [and] persistently used in the conduct of business."

But prosecutors will further demonstrate that Trump and his co-defendants knew those statements were false and continued to peddle them anyway in furtherance of their alleged scheme, Wallace told the judge.

"The defendants were lying year after year," he said.

Wallace played clips of video depositions to punctuate his remarks, including testimony from Trump himself, as well as Eric Trump and former Trump attorney Michael Cohen -- whose congressional testimony years ago precipitated the state's investigation and some of the key allegations underpinning their case.

"The goal was to use each of [Trump's] assets and increase its value in order to get to the end result number," Cohen said during his taped deposition. "It was essentially backing in numbers to each of the asset classes in order to attain the number that President Trump wanted."

Trump and his co-defendants "knew that a high net worth was necessary to get and maintain certain financial benefits," Wallace said, pointing to basic principles of accounting and finance.

Throughout Wallace's remarks, the attorney general's office flashed graphics on television screens inside the courtroom showing some of the alleged inflated values of Trump's properties alongside the amounts the properties were appraised at.

Seated in his chair with his arms crossed, Trump visibly shook his head at times during the prosecutor's opening statement. At one point he seemed to mutter something under his breath.

The former president whispered with his attorneys throughout.

Donald Trump's Mar-a-Lago Club was worth more than $1.2 billion in 2021 -- roughly double the value listed in Trump's statement of financial condition -- according to defense expert Lawrence Moens.

Describing Mar-a-Lago as a castle nestled on 17.6 acres of waterfront property, Moens said he determined the value by considering nearby properties and adding the total value of the club's 500 memberships, which in 2021 cost $350,000 each.

Between 2011 and 2021, Moens' analysis found that Trump undervalued Mar-a-Lago in his statements of financial condition -- but his analysis appeared to be based on Trump being able to sell the property to an individual to use it as a private residence, which the New York attorney general says Trump is prohibited from doing based on a 2002 deed he signed that would "forever extinguish their right to develop or use the Property for any purpose other than club use."

Judge Engoron only qualified Moens as an expert on the value of residential real estate.

Moens spoke with confidence about his ability to value real estate in Palm Beach, saying that he has sold billions of dollars of real estate since his first sale as a broker in 1982. Asked if any broker has sold more Palm Beach real estate than he has, Moens replied, "They don't exist."

"I am on the front lines everyday of selling properties, and I have a pretty good handle of what is going on currently in the market," Moens said. He later added, "My numbers are usually right."

Moens also put together a seven-minute promotional video about Mar-a-Lago, which was played during his testimony. Set to relaxing music, the video included high-resolution drone shots and dramatic panning shots of the property's amenities. After the video played, Moens highlighted details such as hand-carved stones, gold decorations that cost millions to construct, and other details that required years of work from tradesmen.

"I invited the attorney general's office to come see it anytime. The offer still stands," Moens said. "I will make sure he is not there when you come," he said of Trump.

Engoron appeared attentive to Moen's testimony -- but once Moens left the courtroom, he indicated that he wasn't as concerned about Mar-a-Lago's specific value as he was about whether it was misrepresented.

"I see this case about the documents -- whether the defendants used false documents when transacting business," Engoron said. "I am not trying to figure out what the value is ... I don't necessarily consider it relevant."