Have you considered how this will fare in the current regulatory environment? European countries banned Libra because they didn't want it to compete with the Euro and the U.S. showed hostility to pre-crypto complementary currencies. Have you considered licensing the tech to governments to make counterfeit-proof bills?
You mean they would treat it as illegal goods and confiscate it at border? How would they ban this
Some people might not remember the Liberty Dollar[0] from 10-20 years ago. The depository was raided after a few years, the company issuing the currency was shut down, and the owner/proprietor was convicted of illegally minting coins. Kong couldn't be shut down the exact same way - these aren't coins - but I'd be shocked if a similar thing didn't happen were Kong to become as popular as ALD (which, come on, it won't).
[0]: https://en.wikipedia.org/wiki/Liberty_dollar_(private_curren...