Is God the Son's blood divine and infinite or human and finite (Protestant interpretation)

Something I hear a lot is "Jesus has to be God because it took an infinite sacrifice to appease the infinite anger of an infinite God", or something like that. My question concerns whether God the Son's blood is human or divine. If human, then I don't understand how it was infinite enough to be an acceptable sacrifice, why he needed to be God, and how this is not an abomination. If divine, then it must carry the supposed qualities of divinity (infinite, eternal, and unchangable) so that he is not a real human. According to Protestant trinitarianism, when God the Son's blood was shed, was this a shedding of human, finite blood, or was it divine, infinite blood?