1) Formally 2) Fort 3) For the rec 4) For the record 5) Lawfully 6) Legally 7) Strictly 1) Formally 2) In an official role 3) Properly 4) With official authorization 
• (adv.) By the proper officer; by virtue of the proper authority; in pursuance of the special powers vested in an officer or office; as, accounts or reports officially vertified or rendered; letters officially communicated; persons officially notified.
Of·fi'cial·ly adverb By the proper officer; by virtue of the proper authority; in pursuance of the special powers vested in an officer or office; as, accounts or reports officially verified or rendered; letters officially communicated; persons officially notified. 
[adv] - in an official role
adverb in an official role; `officially, he is in charge`; `officially responsible`