I feel like "crypto-equity" is a plenty fair expression. It seems like a subclass of equity, from which 'equities', in the financial regulatory sense, are also derived.

5 - Informal. ownership, especially when considered as the right to share in future profits or appreciation in value.
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I think we can all agree, it's not a "security"... (duh duh duh...)

But equity, in the informal usage of the word, seems legit to me.
And let's face it, crypto is nothing if not informal. ;)