REXS.IO is a technology stack for DLT-based notarization of existing data and data ingestion streams with a clear decoupling of trust and persistence layers. Organizations can benefit from the immutability and tamper-resistance of the distributed ledgers without data throughput limitations typical of permissionless DLTs. REXS.IO abstracts the technical complexities and nuances of the DLT ecosystem. Our solutions are built with intuitive user interfaces and end-to-end chain of trust and scalability in mind. By design, REXS.IO is technology agnostic. We provide a framework with the freedom to choose and deploy the most suitable stack, rather than forcing a user to utilize a particular blockchain or a storage solution.