Systems and methods for authenticating an avatar are provided. This system is useful with an avatar having an identifier, virtual environments, and a user who uses the avatar in the virtual environments. Transoms are generated, each with a unique identifier configured to exist in a specific location, and registered with an identity provider. The transom initiates a request. An offer is conveyed that includes the transom identifier, the location and the avatar identifier. The avatar is then authenticated by a shared secret. The identity provider then responds to the offer with avatar identification information, including reputation information. Reputation information is for the avatar and the user, and is compiled from external avatar data sources by using a trust matrix. An avatar gallery is generated by linking each avatar owned by each user to the account and compiling avatar profiles from the account, and the reputation information. The avatar profiles are searchable, and include micro formats.