UBI can work as long as it can spawn an internal market and micro entrepreneurs in that market. For accomplishing that UBI needs to be delivered as crypto that works within an internal market.
I totally agree that it needs to induce entrepreneurs into the market, but you lost me at Crypto, crypto could be a way of making it work (but you'd need to solve identity issues and have a tax scheme built in AND it'd need to be usable by landlords, grocery stores, etc...
I'm really struggling to understand the logic of this. You create a currency that you pay everyone with, but the only thing that you can spend it on is...initially nothing? If it's plentiful and universal, why would anyone be eager to get more of it?