The sentencing, which is expected to span two days, remains scheduled for September 24.
The defendant could serve up to 30 years in state prison with each count carrying a maximum of ten years behind bars, and a minimum of 22 months.
And it could become evidence in the defamation lawsuits filed against Cosby by accusers who say he branded them liars when he denied molesting them.
Bill Cosby is facing the start of a sentencing hearing at which a judge will decide how to punish the 81-year-old trailblazing comedian who preyed on at least one young woman and perhaps many more.
State sentencing guidelines, which are not mandatory, recommend a sentence between two and four years, Chanenson said.
Defense lawyers will likely point to Cosby's age, frailty and failing vision.
Constand, who had gotten to know Cosby when she was managing the women's basketball team at Temple University, testified that the TV star gave her three blue pills, which caused her to pass out.
The Cosby's and their legal team allege that O'Neill is biased, because decades ago he launched a failed bid for Montgomery County District Attorney against former prosecutor Bruce Castor, who declined to criminally prosecute "America's Dad" in 2005.
One key issue for the sentencing hearing is whether Cosby will be designated a "sexually violent predator".
Cosby's first trial ended in June 2017 with a hung jury, hopelessly deadlocked after 52 hours of deliberations.
"Mr Cosby should not be treated differently because he is a celebrity", she said. Most recently, they saw their request to have additional accusers be allowed to testify at the sentencing hearing shot down.
At Cosby's trial, five women besides Constand testified that he had assaulted them.
Many of Cosby's alleged victims planned to meet ahead of the sentencing to go to the courtroom together today. But given his ability to push for an appeal, and the resources that he has to pay bail and remain far from a correctional facility, it is quite possible that he could live his last days as free as he has since the judge overseeing the proceedings ruled that he may remain confined to his residence leading up to this week's sentencing.