——
“Anything with sharp edges, like coins, would be a risk to astronauts while the chips and magnetic strips used in our cards on Earth would be damaged beyond repair by cosmic radiation,” he added.
——

Let’s take a look at all the fun stuff that’s wrong with this:

Astronauts regularly take up equipment that is no less a “hazard” than coins. For example, pens. And screwdrivers. And buttons.

“…he chips and magnetic strips used in our cards on Earth would be damaged beyond repair by cosmic radiation.”

See, here’s the thing. Space vehicles are *shielded* from cosmic radiation. Because, see, cosmic radiation, were it permitted to flow merrily about the cabin, would have a nasty effect on the actual *astronauts*.

Even if that *weren’t* the case, finding a new radiation-safe method of storing the information kept on debit/credit cards would be infinitely easier than coming up with some new bizarre currency.

This effort strikes me as being in the same league as those bozos who tried to sell Lunar real estate. It *might* be legit, but it’s so silly and asymptotically close to “scam” that it really makes no difference.