Irrespective of its legal status, Sealand is managed by the Bates family as if it were a recognised sovereign entity, and they are its hereditary royal rulers. Roy Bates styles himself "Prince Roy" and his wife "Princess Joan". Their son is known as "His Royal Highness Prince Michael" and has been referred to as the "Prince Regent" by the Bates family since 1999. In this role, he apparently serves as Sealand's acting "Head of State" and also its "Head of Government". At a micronations conference hosted by the University of Sunderland in 2004, Sealand was represented by Michael Bates' son James, who was referred to as "Prince Royal James." The facility is now occupied by one or more caretakers representing Michael Bates, who himself resides in Essex, England. Sealand's constitution was instituted in 1974. It consists of a preamble and seven articles. The preamble asserts Sealand's independence, while the articles variously deal with Sealand's status as a constitutional monarchy, the empowerment of government bureaus, the role of an appointed, advisory senate, the functions of an appointed, advisory legal tribunal, a proscription against the bearing of arms except by members of a designated "Sealand Guard", the exclusive right of the sovereign to formulate foreign policy and alter the constitution, and the hereditary patrilinear succession of the monarchy. Sealand's legal system is claimed to follow British common law, and statutes take the form of decrees enacted by the sovereign. Sealand has issued passports and has operated as a flag of convenience state, and it also holds the Guinness World Record for "the smallest area to lay claim to nation status". Sealand's motto is "E Mare Libertas" (). It appears on Sealandic items, such as stamps, passports, and coins, and is the title of the Sealandic anthem. The anthem was composed by Londoner Basil Simonenko; it does not have lyrics.