Same here. Never heard of them before. But the more you look around on their site, feels more and more like some parody company. They seem to be into everything - bitcoin, blockchain, decentralized this, decentralized that, something called TBD, then Web5 (what even is that?)

https://blog.identity.foundation/block-contributes-to-dif/

https://tbd.website/

This company seems to be mocking itself.

Square renamed themselves to Block. You might have heard of CashApp for example. Their CEO is Jack Dorsey. They have POS terminals and credit card readers.

Even the domain https://block.xyz seemed questionable when I first saw this post.