blue check

Short definition from Wiktionary

Noun

1. 1
   A Twitter user whose account was verified by Twitter as authentic (i.e. not a parody or imposter account) and deemed to be of public interest prior to this system's replacement by a paid verification scheme in early 2023.
2. 2
   An online troll, provocateur, or grifter who uses a paid account to attract greater attention after the early 2023 change on Twitter.