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Social media account or profile which has satisfied the host service's criteria for verification.
1
Those sites feature a blue check mark on their Facebook pages, certifying they are authentic brands.
2
There's a guy named Kayvon and he handles all the verification which is the blue check mark.
3
So if you either DM him, or mention him, you have a high probability of getting a blue check mark.
4
I scroll the Twitter feeds of coronavirus thought leaders, many with newly minted blue check marks.