“Chadwick Boseman, Kobe Bryant and Anthony Bourdain are the latest celebrities to be verified under Twitter Blue, the social media platform’s paid-subscription service that allows anyone to get a blue check mark by their display name if they pay $8 a month and confirm their phone number.
Except the actor, athlete and celebrity chef died years ago, before Twitter Blue even existed. Their accounts — and those of at least a dozen other dead celebrities — now feature a blue check, which, if hovered over, displays the message: “This account is verified because they are subscribed to Twitter Blue and verified their phone number.””
Source : Twitter marks dead celebrities as ‘subscribed’ to Twitter Blue – The Washington Post