No basic income scheme is viable unless the economy that implements it already produces 100% of the basic living consumables required by the populace. It is not a wealth redistribution--more like a production capacity redistribution.
Naively attempting to do that using currency manipulation as your only tool seems doomed to failure, in my opinion.
I don't care to argue for or against basic income at the moment, but presuming that it is to be implemented, the task cannot be accomplished with an alternate currency. I think that ultimately, it will be necessary to threaten highly productive owners of capital with the use of force unless they meet some portion of the consumption requirements of non-working individuals.
The producers would be taxed, at a cruelly high rate, such that if they sold a product that is both appealing and affordable for the people on basic income, they would break even on a cashflow basis, only losing some use of their productive capacity. For some made-up, spewed-out numbers, Apple is taxed $1G on the sale of 4 million of its fully-featured iPhones, at $250 cost and $750 retail--effectively taxing 50% of the profits--and recoups $1G in revenue from selling 20 million "Nekhama iPhones" (Nekkhamma is a Buddhist term) that cost $25 to make, and sell at $75. Maybe it's just the same guts as an iPhone 1, using a smaller chip feature size. Or they could just tell that $1G to go piss off, and less prestigious manufacturers pick up the slack in the basic market. Obviously, sales in the basic market could not trigger the onerous taxes, or the scheme wouldn't work.