1. A method, comprising: receiving, at a computing device, a plurality of data items about a biological entity from a plurality of computing sources, wherein the plurality of computing sources comprises at least a wearable device being worn by the biological entity, and wherein the plurality of data items comprises a data item that includes physiological data obtained by one or more sensors of the wearable device; verifying each data item of the plurality of data items using the computing device by at least: determining a source of the data item from among the plurality of computing sources, determining a provenance for the data item associated with the source of the data item, wherein the determined provenance is indicative of a timing of when the data item was generated, a location of where the data item was generated, or a characteristic of a sensor used to generate the data item, determining that the wearable device is being worn by the biological entity based on the provenance for the data item, and verifying that the data item is associated with the biological entity based at least on the determination that the wearable device is being worn by the biological entity; after verifying that a particular data item of the plurality of data items is associated with the biological entity, storing the particular data item in a data log associated with the biological entity using the computing device, wherein storing the particular data item in the data log comprises storing a data record for the particular data item in the data log, and wherein the stored data record comprises (i) data about the biological entity associated with the particular data item, (ii) data about a time associated with the particular data item, and (iii) a type of activity associated with the particular data item; receiving a request for a portion of data stored in the data log wherein the request is configured to indicate whether to include identifying information about biological entities associated with the requested portion of data; and after determining that the request is configured to indicate not to include identifying information about biological entities associated with the requested portion of data, providing the requested portion of data stored in the data log without the identifying information about the associated biological entities.