California is moving forward with plans to provide reparations to black residents descended from African slaves, despite not knowing how many will prove their ancestry.

A state task force on Tuesday voted 5-4 to compensate African Americans whose ancestors were slaves, the New York Times reported on Wednesday. During a fraught meeting, members eventually agreed on a payment program but did not define how a black Californian would prove he or she is descended from enslaved people. There are more than 2.5 million black residents in California, but it’s unclear what portion had enslaved ancestors.

Task force members were nearly evenly split over denying reparations to those without enslaved ancestors. Members who supported reparations to all black residents argued that slavery affected every black person, even those who emigrated freely to the United States.