WordNet sense 1 (conforming to orthodox or recognized rules):

canonical, canonic

WordNet sense 2 (adhering to what is commonly accepted):

orthodox

WordNet sense 3 (formally approved and invested with legal authority):

ratified

WordNet sense 4 (established by or founded upon law or official or accepted rules):

legal

WordNet sense 5 (established by authority; given authoritative approval):

approved

WordNet sense 6 (endowed with authority):

authorised, authorized