gm, let's hack 🫡

Zapple pay is hands down the best project name of the year

Read this: Elliptic Curve Cryptography: a gentle introduction It's a REALLY good 4 part series. You will enjoy it a lot. You will read it and you will think "holy cow, that's why my corn is safe!". And "elliptic curves are so siccc". And "Goddamn Satoshi!". If you don't have time right now, then read it tomorrow. Whatever you do, read it.

Elliptic Curve Cryptography: a gentle introduction

Join Cashu, we'll teach you basic math!

I learned something really cool the other day: There is an attack on signature schemes called the "blinding attack". It basically abuses what we cherish in ecash: blind signatures. The gist is the following: You can make someone sign a "bad message" M (example: "I confirm that I'm stupid") if you can find a blinding factor r such that r*M looks like an "good message" (like "I'm very smart"). You get a signature on the blinded message r*M and can unblind the signature (very much like in Cashu) to get a signature on the unblinded bad message M – and now everyone thinks you're stupid!

Seriously, the impact that OpenSats has on the Bitcoin and Nostr dev community can't be understated. Seeing them grow their support makes me extremely optimistic for the future of Bitcoin and Open Source. View quoted note →

Cashu Nutshell seed backup and restore seems to work great so far. One thing that still needs a bit of work is the ability to restore multiple wallets in the same app. Nutshell allows you to use as many wallets as you like with `cashu --wallet <wallet_name> <command>`.

Check out the different Cashu dev libraries written in * Python * TypeScript * Rust * Golang * Javascript * Kotlin 🚀🥜

Libraries - Cashu.space

Cashu development libraries.

This is so wrong. We've had a vibrant builder community for years. Just look at Lighting alone!!! Now a couple of web apps doing PSBTs with Ordinals are supposed to revive us? Noobs.

Swear to god AI is the shitcoin of Bitcoiners

Introducing X-Cashu (protocol) and Proxnut (frontend). "Something something revolutionizing AI and Bitcoin using paid chat bots etc. etc. <autocomplete this>." The protocol fits on a napkin: Send nut in request, get response. No accounts. No metering. No tracking. Just ecash.

Regtest version: simpnet v6

Let's move all coins onto opendimes and delete all private keys ☠️

More reasonable than any of the other projects from last year that set out to build a new internet on the Lightning network. Use Lightning Network to send satellite messages with Blockstream

GitHub

GitHub - Nisaba/P-38: Use Lightning Network to send satellite messages with Blockstream

Use Lightning Network to send satellite messages with Blockstream - Nisaba/P-38

For anyone looking for a simple project to get into Cashu dev, I just had an idea: the redeem page [1] right now swallows all overpaid Lightning fees (code: [2]). However, we have NUT-08 (which is also implemented into cashu-ts [4]) which allows users to receive back the overpaid fees. It would be nice to have that feature on the redeem page! I imagine the steps would be: - Figure out how NUT-08 works (rather simple) and how it is used in cashu-ts - Add that to the redeem page to receive overpaid fees back from the mint - Store overpaid fees in local storage so the user can use it when they try to make the next redeem attempt. - Hint: overpaid fees from different mints (identified by keyset ID) need to be stored separately in local storage because you can't use the tokens from mint A to pay in mint B [1]

Cashu Redeem

Redeem your Cashu tokens easily

[2]

GitHub

GitHub - cashubtc/cashu-redeem

Contribute to cashubtc/cashu-redeem development by creating an account on GitHub.

[3]

GitHub

nuts/08.md at main · cashubtc/nuts

Cashu protocol specifications https://cashubtc.github.io/nuts/ - cashubtc/nuts

[4]

GitHub

GitHub - cashubtc/cashu-ts: A TypeScript library for building Cashu wallets and apps

A TypeScript library for building Cashu wallets and apps - cashubtc/cashu-ts

If you're a dev, join:

Telegram

Cashu R&D

Matrix for dev: https://matrix.to/#/#dev:matrix.cashu.space

And Google has killed all overvalued chat bot startups...

Cashu Cash (Chaum's vision) - 10 GB ecash tokens - You don't need to run a mint - Bitcoin's first Layer 4

Oh the beautiful days when zapathons used to DDoS custodial Lightning wallets.

LNbits Cashu extension updated to 0.2.4 – no CASHU_PRIVATE_KEY shenanigans anymore. Just update it, enable extension, click click, your Chaumian mint is ready to hide your nuts.

Bitcoiner's should host mirrors of https://libgen.is/ and

Sci-Hub

If these two websites vanish from the face earth, it should be akin to the library of Alexandria going off in flames all over again. It's insane how important and yet unsupported these resources are. There's too much weight on the shoulders of only a few.