"I'm going to start with something I can say i think with confidence … which is just to thank you. To thank you for your jury service," defense attorney Todd Blanche told jurors to begin his closing argument.

"Each of you will decide ... whether President Trump is guilty or not guilty," he said.

All eyes in this courtroom are on Blanche. Every member of Trump's family is looking at him. The jurors are staring at him, many with pens in their hands ready to take notes.

"President Trump is innocent," Blanche said. "He did not commit any crimes, and the district attorney has not met their burden of proof. Period."

Defense counsel Todd Blanche says he has a 2.5-hour closing, "maybe a little longer."

Prosecutors say they estimate they have a 4 or 4.5-hour closing.

“Defense counsel must come up first, and the prosecutor must follow,” Judge Merchan said.

Merchan says he will ask the jury if they will work later than 4:30 p.m. to do all the closings in one day.

Judge Juan Merchan has taken his seat at the bench.

"Good morning, counsel. Good morning, Mr. Trump," Merchan said in his normal greeting to start the proceedings.

Donald Trump has entered the courtroom alongside his lawyers.

Don Trump, Jr., Eric Trump, Lara Trump, and Tiffany Trump followed behind the former president and took seats in the gallery immediately behind the defense counsel table.

Today is the first time Tiffany Trump attended the trial, and it's the largest showing of Trump family members on a single day of the trial.

Manhattan DA Alvin Bragg, also in court today, is seated behind his prosecution team.

Judge Merchan told the jury that they have the ultimate authority in determining the truthfulness of a witness' testimony -- an instruction that might come in handy given the emphasis that defense lawyers placed on Michael Cohen's testimony, which they say includes lies.

"You will alone determine the truthfully and the accuracy of the testimony of each witness," Merchan said.

He added that the jury could either disregard the testimony of an untruthful witness entirely, or disregard part of it.

"There is no particular formula" to determine credibility, Merchan said.

"You may consider whether the witness has any interest in the outcome of the case," he said -- another matter that might weigh on jurors' minds.

"You may consider whether a witness did have, or did not have, a motive to lie," the judge said.

Trump's attorney had told the jury Cohen had an "axe to grind" against his former boss. Prosecutors partially conceded that Cohen had a motive, acknowledging that, to date, he is the only one who suffered any consequences from the matter at hand.

Trump, at the defense table, appeared to look over to the jury and offer a bit of a closed-mouth grin.