*3.1. Participants*

Authorized parties (forensic investigation) gather digital evidence (images) and then register it in blockchain. Lawyers, the police, the defense, and the court all participate in forensic investigations because they need information regarding the CoC at various points throughout an investigation. Only authorized parties have access to the data associated with a specific piece of evidence [6]. Each authorized entity has a unique identity that is publicly known, and he or she possesses credentials that enable authentication and action throughout the CoC process [21].
