Each year the United Nations Joint Staff Pension Fund (UNJSPF) conducts an exercise to verify the continuing eligibility of retirees/beneficiaries to the benefits they are receiving. As part of this exercise, each person in receipt of a benefit must annually submit a proof of life. The Digital Certificate of Entitlement (DCE) app, launched in 2021 by the UNJSPF and the United Nations International Computing Centre (UNICC), addresses this challenge of verifying the identity and location of UNJSPF retirees/beneficiaries worldwide. This state-of-the-art mobile authentica on solution leverages blockchain, biometrics, facial recognition, and global positioning technologies. Developed in response to global disruptions caused by COVID-19, the DCE offers a secure, efficient, and eco-friendly alternative to the traditional paper-based proof-of-existence exercise. It allows retirees and beneficiaries to complete the exercise online, eliminating the need for paper and postal services, with identity verification conducted through facial recognition. Aligned with the UNJSPF strategy to enhance client experience and modernize services, as of November 2023, over 40% of the retiree and beneficiary population has enrolled in the DCE app.