An assertion assessment system is presented. An assertion object that represents a relationship between an assertion and an information source can be bound to a quality measure as an indication of the quality of the assertion object. The assertion assessment system enables different recipients of assertion objects that are linked to information sources to assess assertion quality of the assertion objects. The assertion assessment system manages and tracks these assessments of the assertion objects and provides useful indications to the recipients. Thus, workers who come upon an assertion can make a judgment on the quality of the assertion based on assessment made by other workers, without going through the information source that supports the assertion.