OpenCheck is a Chrome add-on developed by Metarational, LLC that brings identity verification to Twitter profiles and timelines. With OpenCheck, users can easily see if a Twitter account has been verified for authenticity and trustworthiness.

Using a combination of Wikidata and community-based, web-of-trust identity verifications, OpenCheck displays identity verification information directly on Twitter accounts and timelines. This provides users with an added layer of confidence when interacting with others on the platform.

The add-on seamlessly integrates with the Twitter interface, making it easy to identify verified accounts at a glance. OpenCheck's use of reliable sources like Wikidata ensures that the verification information is accurate and up-to-date.

If you value transparency and want to ensure that the accounts you interact with on Twitter are trustworthy, OpenCheck is a helpful tool to have. It brings identity verification to the forefront, allowing users to make informed decisions about who they engage with on the platform.