Welcome to the Steemiverse!
Looks like your Twitter handle isn't printing correctly here due to a feature of Markdown. There should be two underscore characters, one after the @ sign, and another after "blockandchain" — but Markdown interprets those underscore characters as an instruction to italicize everything between them. As a result, your post shows the Twitter handle for somebody else, known as Folzy.
Warning to readers: Folzy is not the person you seek if you want to follow @theblockandchain on Twitter.
On Twitter, look for @_ blockandchain _.
Thanks for the info