The utilization of blockchain technology in the digital chain of custody within the field of criminalistics, particularly in the examination of digital evidence within the legal and judicial framework, presents a robust solution to ensure the integrity and authenticity of digital evidence. This study examines the integration of blockchain technology into the procedures for handling digital evidence through the use of hash functions to ensure the integrity and legality of the processes conducted, the data collected during ongoing activities, investigations, and forensic analyses; as well as to guarantee their immutability and verifiability. Specific situations in the realm of criminal investigations are analyzed, highlighting the potential of blockchain technology to increase transparency and trust in judicial procedures, which, with the current chain of custody, could lead to doubts and the nullification of evidence. This reduces the risk of digital evidence tampering and simplifies audits and verifications carried out by legal authorities. Some of the analyzed verdicts indicate that the implementation of blockchain enhances the digital chain of custody, improves the efficiency of forensic and legal processes, and ensures greater reliability of the evidence presented in court.