Official announcement
The phrase came when Chinese actress Zhao Liying announced that she has married Chinese actor Feng Shaofeng by posting her marriage certificate on her Sina Weibo account on October 16 with the caption "official announcement."
Since then, the term was largely use by media or organizations to announce official information. The word "official" refers to government but it is meant to stress the authenticity of the released information when being used by non-official organs.
Confirmed by eyes
Picked from the lyric of a song by Singaporean singer JJ Lin, the term means "checked" and "examined," but it not necessarily means gazing into someone's eyes.
The phrase was used by net users during the Spring Festival to complain about the small Red Envelop that people from Guangdong Province received. The frequent use of the term demonstrates people's willingness to make their information confirmed or identified.