On the differences between Fedimint and Cashu from my perspective.

Fedimint is federated (meaning the ecash mechanics and the on-chain multisig), Cashu is always a single mint operator with Lightning abilities. Both are custodial in that sense. However, the rugpull risk is reduced in the federated model but it's also (often a lot) harder to implement as a programmer (it's a truly great achievement!).

Cashu is more about the ecash protocol itself. We're writing libraries in different programming languages and we have Python, Golang, JavaScript and Typescript so far. The goal is to design a simple ecash protocol that everyone can easily implement into their custodial Bitcoin application and benefit from the ecash protocol (near-perfect privacy and other benefits).

The first few examples so far are

* running a mint in LNbits

* A Python wallet and mint https://github.com/cashubtc/cashu

* A Go wallet and mint https://github.com/cashubtc/cashu-feni

* A JS wallet https://cashu.me

* A TS wallet https://nutstash.app

* A swap service https://redeem.cashu.me

* A faucet https://www.gandlaf.com/faucet/anarchy

* and soon more

More info at https://cashu.space and at https://github.com/cashubtc

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Ahahah don't worry you can ask as much as you want :)

#[1]

In the very bottom of this note:

#[2]

I'm trying the python wallet. But I don't get why I'm having mint error issues when cashu pay. Any help very welcome!

(py39) ****Mac ~ % cashu info

Version: 0.9.2

Wallet: wallet

Cashu dir: /****/****/.cashu

Tor enabled: True

Mint URL: https://8333.space:3338

(py39) *****@Mac ~ % cashu pay lnbc1m1p3lq.....

Balance: 241487 sat

Pay 100000 sat (101000 sat incl. fees)? [Y/n]: y

Paying Lightning invoice ...

Exception: Mint Error: tokens already spent. Secret: x_yUSK5k2HGZrXv2Lpn6Hg #[1] #[2]

I wrote a short intro blog post to Cashu here, WDYT?

https://maxmoney.substack.com/p/ecash-for-better-bitcoin-privacy

Oh thanks, I didn't know cashu wasn't federated because I have not looked into it yet! I knew fedi before cashu so I just assumed it's the same concept.

Thanks for the code and chill call yesterday, it definitely helped me understand some technical aspects. I wanted to get your thoughts on how this could be applied to something like the recent beta release of atomic swaps with XMR on Samourai. Would there be a way for a mint to hold both Monero and Bitcoin and allow its users to swap them if they wanted and possibly eliminate fees?

Tried out the faucet and can't get past this screen 😞

#m=image%2Fjpeg&dim=886x1920&blurhash=%5B75%24PFofInWBueWBt7ofSvayt7azw5j%5BWBaei%7CWBV%5BofXNj%5Bt7ayo%7BayoMfPjIayj%5Baynmayaeay&x=9730dd828f954a36aa0a13a6e5d04259c9f7678d8d5e548e969d947c39e3c3b4