NexusTrust is a secure digital platform designed for managing co-owned or collaboratively managed high-value assets and ventures. Inspired by innovations in secure data computation and shared ownership models, it leverages advanced encryption (like “Private Shared State”) to ensure data privacy and integrity for all parties. The platform enables transparent usage tracking, financial contributions, and decision-making without exposing sensitive individual data. It can integrate biometric authentication for secure access and transaction approvals, simplifying complex agreements and fostering trust among co-owners or collaborators for assets ranging from vacation properties to shared business IP.