Today as never before, we have access to a wealth of digital attributes and sensor data that we control. What is missing, however, is the ability to easily manage these diverse silos of data. Identity and service providers could create higher-value content for business applications by aggregating these data in machine- or human-readable form. The OIXnet Registry is an early step in producing a registry service, a public database for Identity Providers (IdPs) to be registered, published and searched, and where they can make known to users the characteristics of the attributes they manage. It is then at the discretion of the identity owners to aggregate or disaggregate their personal data.