Yes, Blockstream has a token that represents Bitcoin miner shares.

The most important thing is to wait until the token is registered by SEC, so far all scam tokens skipped that step.

There are a couple of "token sales" (they don't call them that) that only allowed accredited investors to invest, and had their "token sales" registered with the SEC before they went live with them. If those were designed to defraud the investors, I'm pretty sure SEC would go after those first.