Twitter’s blue check apocalypse is upon us. Here’s what to know.

The blue check mark on Twitter has long conferred a special status. Only certain accounts — typically those of public figures whose identities were confirmed — have been bestowed the symbol.

Now that is changing.

Starting April 1, many Twitter accounts have been set to lose the check mark under modifications being made by Elon Musk, the social media company’s owner. Individual users must buy a subscription to Twitter’s Blue service, which costs $8 a month, to obtain the badge. Businesses that are currently unverified will have to pay $1,000 a month if they want a gold check mark verifying their account.