# Cashu Dev Call 22, June 26, 2025

### NUTs
#### Merged
* [NUT-01](https://github.com/cashubtc/nuts/pull/263) - Add Supported Units and ISO 4217 Minor Unit Clarification to NUT-01
* [NUT-04 and NUT-05 (and new NUT-23)](https://github.com/cashubtc/nuts/pull/258) - Abstract NUT-04 and NUT-05 Payment Methods
* [NUT-18](https://github.com/cashubtc/nuts/pull/248) - Add optional nut10 options and transport field
* [NUT-24](https://github.com/cashubtc/nuts/blob/main/24.md) - HTTP 402 with X-Cashu

#### New
* [NUT-XX](https://github.com/cashubtc/nuts/pull/267) - Mint list backups on nostr for wallets

#### Needs Love
* [NUT-XX](https://github.com/cashubtc/nuts/pull/182) - Keyset ID V2
* [NUT-11](https://github.com/cashubtc/nuts/pull/149) - SIG_ALL sign aggregated message all inputs and ouptut
* [NUT-XX](https://github.com/cashubtc/nuts/pull/261) - Golomb-Coded Set Filters

### Projects

#### Library and Mint updates
* [cdk v0.10.0 and v0.10.1](https://github.com/cashubtc/cdk/releases/tag/v0.10.0) - Introduces the new SignatoryManager service.
Upcoming release plan:
* v0.11.0 Sqlx
sqlx -> rusqlite
https://github.com/cashubtc/cdk/pull/783
redb -> sqlite conversion
https://github.com/thesimplekid/cdk-convert-redb-to-sqlite
* v0.12.0 bolt12
Dev calls:
https://github.com/cashubtc/cdk/discussions/categories/dev-calls
* [nutshell v0.17.0 and v0.17.1](https://github.com/cashubtc/nutshell/releases/tag/0.17.1) - blind auth, improves multinut payments by making them more reliable through querying multiple routes before failing. Hot fixes.

#### Cashu Wallets Updates
* [Cashu.me](https://github.com/cashubtc/cashu.me) - unified history, translations in 8 languages, BIP 177, experimental nostr backup, Web share, multinut actually working
* [Sovran](https://github.com/SovranBitcoin/Sovran) - in iOS App Store, bringing together technologies that enhance user sovereignty such as Bitcoin, Ecash, Lightning & Nostr. Built-in eSIM and VPN functionality
* [Macadamia](https://github.com/zeugmaster/macadamia) - receive offline if locked to private key
* [Zeus v0.11.0](https://github.com/ZeusLN/zeus/releases/tag/v0.11.0) - ZEUS Pay now supports Cashu address types, experimental Cashu wallet release
* [Keychat 1.32.6](https://github.com/keychat-io/keychat-app/releases/tag/1.32.6) - various updates for ecash.

#### Various Projects

New (some new projects are in Demo section):
* [+chorus](https://github.com/andotherstuff/chorus) - simple space for communities to gather, share, and support each other. It is built on the decentralized Nostr protocol.
* [MCP-money](https://github.com/pablof7z/mcp-money) - An MCP (Model Context Protocol) money implementation for Nostr using NDK (Nostr Development Kit) with Cashu ecash functionality. (MCP server to give NIP-60 wallets to agents, **an important milestone in the path towards skynet**)
* [BTCNutServer plug-in](https://github.com/d4rp4t/BTCNutServer?mc_cid=bf3feffb71) - released as experimental plug-in

New Wallets
* [sixty nuts](https://github.com/shroominic/sixty-nuts) - a NIP-60 Cashu Wallet in Python
* [Nutshell fork](https://github.com/jooray/nutshell/tree/units) - With fiat support. Added accounting (for hedging), proper melting (with checking if the exchange rate did not change).
* [Cashu Rust wallet](https://github.com/optout21/parakesh) - Simple, reference implementation Cashu wallet, in Rust, with UI, based on CDK. [Screenshot](https://github.com/optout21/parakesh/blob/main/docs/screenshot/sh_rec_ln.250526.png)

Updated
* [Tollgate](https://github.com/OpenTollGate/tollgate-os/releases/tag/v0.0.3) - now automatically pays out accumulated funds to Lightning addresses
* [npubx.cash](https://github.com/cashubtc/npubcash-server/tree/v2) - now can use any Cashu mint for your Lightning address.

### Nuttiest Project
* [Nostr post](https://primal.net/e/nevent1qvzqqqqqqypzq5xeflpdskqvdq4swxj59793uvdzqzc9pzatjk3nhmcg2h0js8trqqsgzpy9cxda02mqk80lug762ved0n3zzzadt3tgx4yf5hs2a6nnwjqywpn3c) - Cashu ecash QR code encoded into the spectrogram of a podcast on a cassette

### Cashu and Privacy Resources
* [ecash-402-specs](https://github.com/ecash-402/ecash-402-specs)
* [Cuba All About Cashu](https://github.com/Forte11Cuba/allaboutcashu)
* [State of ecash design preso](https://www.figma.com/deck/nR0U6iQklDvngKQdHumBlo/State-of-ecash-Design?node-id=1-779&t=C4dfhrCUssAO5qHl-1)
* [RIP](https://github.com/routstr/protocol) - Roustr Improvement Protocol
* [Freedom Store](https://freedomstore.io/) - several Cashu wallets on store, including Minibits iOS and Sovran. Only in EU.
* [Financial Privacy as a Human Right talk at HRF Financial Freedom](https://www.youtube.com/watch?v=pbmQl6bej5E)
* [nostr.book](https://nostrbook.dev/) - documentation on all things nostr

### Demos

* [Goose](https://github.com/thesimplekid/goose/pull/1) with [Routstr](https://github.com/routstr) and [cdk-cli](https://github.com/cashubtc/cdk/tree/main/crates/cdk-cli)
* [npub.cash v2](https://github.com/cashubtc/npubcash-server/tree/v2) - Preview
* [coco](https://github.com/Egge21M/coco-cashu) - Super early preview and CTA
* [FaaS](https://gist.github.com/Amperstrand/e7b0927183ed7347fa7655a1baad6476) - Firewall as a Service: pay with cashu to make firewall changes

### Q&A (if time)
* Bring your questions for the nuts.

#### Matrix server
- Join our [matrix dev server](https://matrix.to/#/#dev:matrix.cashu.space)

#### Next Meeting 16:00 UTC, July 31, 2025 (generally) Last Thursday of each month