A system and method for more efficiently establishing a chain of trust from a registrant to a registry. A registrant credential is associated with a Shared Registration command and is sent by a registrar to a registry. Upon successful validation, a token is generated and bound to a registrant identifier. The token is included along with the registrant identifier in subsequent discrete Shared Registration commands submitted to the registry on behalf of the registrant. The registrant thus needs to submit its credential only once for changes that require several discrete commands. Also, it is more efficient for the Shared Registration System to validate a token for a set of commands than to validate different registrant credential for each discrete command.