What is Twitter's blue tick?

Stocks of two companies plummeted on Wall Street recently. And the firms lost billions of dollars in market capitalization. The reason was Twitter’s move to sell its coveted blue check badge for $8. Aerospace company Lockheed Martin and pharma giant Eli Lilly and Company fell prey to impersonators. But what exactly is blue check and how did it come into being? Let us find out in this segment of the podcast.