Imagine \"Archivo Seguro,\" a national digital archive established to preserve a country\'s historical documents and cultural heritage. Initially, Archivo Seguro implemented state-of-the-art hardware and software, meticulously followed metadata standards, and established robust security protocols. However, five years into operation, several critical issues emerged: key personnel left due to a lack of career development opportunities, preservation policies were inconsistently applied due to inadequate training, stakeholder engagement declined because of poor communication, and budget cuts led to a neglect of system maintenance. Consequently, data integrity became questionable, access to resources was limited, and the archive\'s reputation suffered.\n\nBased on this scenario and considering the ISO 16363:2012 standard, which aspect of trustworthiness was most significantly compromised in Archivo Seguro, leading to its operational challenges and decline in reliability?