>>26
There is an other company that makes the goldbacks themselves, and its core this is just gold leaf between two layers of polymer:
https://valaurum.com/
I kind of like the idea, but the execution is not so good. Ideally these gold notes should have the size and form of a credit card, so that you can stack them in those fancy modern valets that only hold cards. And if you think about it, you could also shape solid gold into that form, and then also clad it in polymer.
I can imagine an economy where you have digital fiat currency and these gold notes of various weights existing as competing currencies, with the former being preferred. Accepting the digital currency would be mandatory for every business, but they are also allowed to accept these gold notes instead. although they can also refuse the latter. Also, back in the 19th century you could show up at a mint with some gold or silver, and they'd give you coins for them. The amount of precious metals in those coins was less than what you gave to the mint, and that was the payment. I can imagine the exact same system would work with these gold notes. Gresham's law would most likely turn this whole thing into a hobby for the most part, as 99% of people would use the digital money for more than 99% of their transactions, but at least those die hard fans of gold would accept that the unwashed masses use digital, meanwhile they have these precious notes.