We want people to find the content they’re expecting to find on Pinterest, which is why there are red or blue ticks next to certain notable names like celebrities, brands or media. The goal of this tick is to help people find the accounts they’re looking for (for example, you should be able to easily distinguish Abraham Lincoln’s Pinterest account from the Pinterest account for an Abraham Lincoln fan site).
If you want to help people know you’re a trustworthy source, add your logo as your profile picture and make sure you've claimed your website. Remember that claiming your website and verifying your profile are separate. For other tips on how to build your brand and get discovered on Pinterest (hint: add the Save button to your website), check out business.pinterest.com.