Criminal procedure; clarifying and including additional evidentiary disclosure requirements for prosecutors; effective date.

HB 1973 clarifies and expands Oklahoma prosecutors' requirements to disclose evidence to defense attorneys in criminal cases. It mandates that prosecutors share specific information including witness statements, lab results (like forensic test data), OSBI rap sheets for witnesses, and any evidence that could help the defense (such as information negating guilt or impeaching prosecution witnesses). The bill directly affects prosecutors, who must make a "diligent, good faith effort" to locate and disclose this material, and defense attorneys, who gain broader access to potentially exculpatory information. This aims to ensure fairer pretrial access to evidence without adding new penalties or altering trial procedures.