EC3 supports a range of account types based on the level of privacy and reliability expected. The Professional tier is the 'regular' EC3 experience. Private accounts are for persons who prefer privacy to sharing features, or who are providing personal (rather than business) contact information. A special Pilot tier is for partners who help us build the tool and who contribute expert beta testing of our functions and data prior to broad release. Curator access is reserved for program operators and similar providers who have a data curation agreement with Building Transparency.