Sure, and apparently there's a coin for that too, by Chaum himself[0] :P (If it's not obvious: Blind signature as such are solid but I wouldn't suggest anyone

Sure, and apparently there's a coin for that too, by Chaum himself[0] :P (If it's not obvious: Blind signature as such are solid but I wouldn't suggest anyone to give a cent to this sketchy project) AFAIK (and I'd be thrilled to be proved wrong) we still haven't figured out how to solve double-spend using blind signatures without a blockchain and so the schemes I've seen so far invariably involve either that or a trusted mint and are therefore less interesting to use as currency. Assuming you already have a base digital currency (like bitcoin), they can still be interesting on/as a higher layer. [0]: https://xx.network/blog/decrypt-how-david-chaum-went-from-inventing-digital-cash-to-pioneering-digital-privacy/ https://xx.network/blog/decrypt-how-david-chaum-went-from-in...