Yep, not just stock grants, but anything. For example you find a bug in an airline, and report it and they compensate you as a thank you with 200k airline miles... you now owe income tax on those miles.
Based on the value of the "item" for example airlines will assign a value to these miles ie (100,000 miles worth $1200) - or something like that. Otherwise, I don't know. I'm not an accountant/cpa, but I know that this stuff is taxable whether it's tokens or ketchup packets.
