A system for providing third-party certification of content in an electronic commerce transaction includes one or more servers operating on one or more computers. The one or more servers receive a first set of attribute values from a first party, the first set of attribute values being associated with one or more products that are the subject of an electronic commerce transaction between the first party and a second party. The one or more servers verify that the first set of attribute values matches, at least in part, a second set of attribute values maintained by the second party, the second set of attribute values being associated with the one or more products that are the subject of the electronic commerce transaction between the first party and the second party. The one or more servers store the first set of attribute values in one or more databases, generate a key identifying the stored set of attribute values, the key providing a holder of the key read-only access to at least certain portions of the stored set of attribute values, and communicate a copy of the key to the first and second parties. In response to presentation of the key, the one or more servers provide read-only access to at least certain portions of the stored set of attribute values.