One very strong issue pointing to Chase's innocence is that he allowed, perhaps even insisted on his legal team investigating every bit of the evidence. They could just as easily have found more evidence against Chase, not the exculpatory evidence they found.
And if they had found evidence of guilt, they would have been required to turn that over. Under California law, discovery works both ways.
Why would a man allow a deeper investigation into the evidence, if he had anything to fear from that?
This speaks loudly to the innocence of Chase, for me.