Proving that a user profile satisfies selection criteria for targeted data delivery

摘要

Methods and systems for targeted data delivery are described. A user profile that includes information about a user is accessed. A root hash of a hash-based directed acyclic graph (HDAG) is computed. The HDAG includes hashed values of items of information in the user profile. The root hash is used in proving that the user profile satisfies selection criteria associated with an offer to deliver data. The user is eligible to be presented with the offer of data provided the user profile satisfies the selection criteria. The data is targeted to the user based on the user profile without requiring a release of any of the information in the user profile.