Money can be secured totally and purely by technology.
BTW, have you heared about Quantum Money.
Discussion
Having only read the Wikipedia article, it seems like ecash is basically better in all regards. Is that your take?
I think xec devs are doing that. Any decebtralized technology can lead financial transactions smoothly and securly like what #bitcoin did so far.
If you haven’t, I’d recommend checking out #cashu and #fedimint. They’re implementing a Chaumian mint within bitcoin. Switching blockchains is a significant downside, but with these there is no need to. If you make a wallet I’ll send some sats for fun! https://wallet.cashu.me/