thesimplekid

Grantee @spiralbtc working on Cashu Dev Kit

DMs: @thesimplekid:matrix.org

Public Key

npub1qjgcmlpkeyl8mdkvp4s0xls4ytcux6my606tgfx9xttut907h0zs76lgjw

NIP-05 Address

npub19ulp0mk2yqphy2s9nsfyeum5hggmct6dpt8pwnfppdcaydj8k50sj9n72z@npubx.cash

NIP-57 Address

npub1kaqk2dld44gadlr6junm3j4eu4jd4u30zl8n75slmn48gdv87cds0dekqy@npubx.cash

Profile Code

nprofile1qqsqfyvdlsmvj0nakmxq6c8n0c2j9uwrddjd8a95ynzn9479jhlth3gpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsg7akt7

Publishing to

relay.damus.io

Author Public Key

npub1qjgcmlpkeyl8mdkvp4s0xls4ytcux6my606tgfx9xttut907h0zs76lgjw

Show more details

Last Notes

2025-09-23 15:48:48

CDK Release
Version 0.13.0 marks a major milestone for mobile development with the introduction of comprehensive native mobile bindings that enable building Cashu wallets for iOS and Android using Swift and Kotlin. The release introduces cdk-ffi, a new Foreign Function Interface crate that provides UniFFI-based bindings for Swift and Kotlin, with full wallet functionality including multi-mint support, BOLT12 payments, BIP-353 address resolution, and advanced features like P2PK conditions and authentication. Mobile bindings are distributed through dedicated repositories at https://github.com/cashubtc/cdk-kotlin and https://github.com/cashubtc/cdk-swift that provide native package management for Android/JVM and iOS/macOS platforms respectively. The release also delivers significant infrastructure improvements including an event-driven payment architecture with real-time notifications, enhanced database layer with generic key-value storage, improved HTTP transport with proxy support and BIP-353 DNS resolution, and new operational features like Prometheus metrics collection and dedicated authentication database support.
Full release notes: https://github.com/cashubtc/cdk/releases/tag/v0.13.0
Thanks to @nprofile…n7a8 for much of the work on the bindings

2025-08-26 13:45:30

cdk and mintd Version 0.12.0
https://github.com/cashubtc/cdk/releases/tag/v0.12.0
Delivers end-to-end BOLT12 offers and payments, adds BIP‑353 address resolution for BOLT12 payments, and introduces cdk-ldk-node, an integrated Lightning backend that lets a single binary run both a Cashu mint and a Lightning node with full BOLT11 and BOLT12 support. It also adds a local, admin-focused web UI for cdk-ldk-node with dashboards for channels, invoices and offers, payments, and on-chain activity. On the data layer, the release expands storage with PostgreSQL via the new cdk-postgres crate and accelerates the shared SQL stack (cdk-sql-common) with statement caching and structured, namespaced/global migrations. Operationally, the mint now exposes explicit start and stop lifecycle methods, enabling graceful startup and shutdown of background services. Wallet keyset management has been clarified with renamed APIs that separate local storage from network fetches. The MSRV is updated to 1.85.0.

2025-07-02 19:08:34

The Dublin Bitcoin meetup is back! Join us tomorrow (July 3rd) at 7pm upstairs at The Palace Bar, 21 Fleet St, Temple Bar. See you there.

2025-06-11 09:04:43

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👋

2025-06-07 20:28:34

CDK v0.10.0 released
Introduces the new SignatoryManager service, a significant architectural enhancement that provides complete segregation between the mint and its most sensitive component: the private keys. The SignatoryManager offers a clean API for all key-related operations and keyset management, with communication limited to messages passed through the manager interface, ensuring the signatory remains isolated from the rest of the mint. This foundation enables future deployment of signing operations in separate services or foreign environments to reduce operational risks. Additional improvements include a new mint URL flag option, enhanced NUT-04/NUT-05 implementations, ARM64 Docker support, and updated dependencies.
https://github.com/cashubtc/cdk/releases/tag/v0.10.0

2025-06-06 16:29:32

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Either way I didn’t make it so don’t deserve any sats.

2025-06-06 16:21:10

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I have no idea what runstr is but if it involves running is certainly doesn’t involve me

2025-05-18 13:05:13

Minor CDK Release v0.9.2
[0.9.2](https://github.com/cashubtc/cdk/releases/tag/v0.9.2)
Added
- HTLC from hash support [PR](https://github.com/cashubtc/cdk/pull/753) ([thesimplekid]).
- Optional transport and NUT-10 secret on payment request [PR](https://github.com/cashubtc/cdk/pull/744) ([thesimplekid]).
- Multi-part payments support in cdk-cli [PR](https://github.com/cashubtc/cdk/pull/743) ([thesimplekid]).
Changed
- Refactored Lightning module to use common types [PR](https://github.com/cashubtc/cdk/pull/751) ([thesimplekid]).
- Updated LND to support mission control and improved requery behavior [PR](https://github.com/cashubtc/cdk/pull/746) ([lollerfirst]).
Fixed
- NUT-18 payment request encoding/decoding [PR](https://github.com/cashubtc/cdk/pull/758) ([thesimplekid]).
- Mint URL trailing slash handling [PR](https://github.com/cashubtc/cdk/pull/757) ([thesimplekid]).
- Get spendable to return witness [PR](https://github.com/cashubtc/cdk/pull/756) ([thesimplekid]).
- Melt start up check [PR](https://github.com/cashubtc/cdk/pull/745) ([thesimplekid])

2025-05-16 10:26:11

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https://github.com/cashubtc/awesome-cashu

2025-05-13 13:38:06

#nevent1q…ccss

2025-05-09 18:38:07

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I would be interested in it.

2025-05-06 22:02:21

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https://github.com/cashubtc/nuts/pull/239

2025-05-05 16:09:25

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Fish

2025-05-04 12:15:57

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Claude 3.7

2025-05-04 07:10:58

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Added

2025-05-03 10:34:06

Rust Dev follow pack. Who am I missing?
https://following.space/d/8bz84uoqdknn?p=04918dfc36c93e7db6cc0d60f37e1522f1c36b64d3f4b424c532d7c595febbc5

2025-04-28 19:49:35

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Well this makes me feel less bad

2025-04-24 14:41:52

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Install from test flight. Open app immediately prompted to update lmao never stops shipping

2025-04-21 17:45:57

Alright that’s enough vacation need to get back to work. Bolt12 this week

2025-04-20 22:03:22

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Nix

2025-04-11 16:36:52

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Can do BIP353 too one we have bolt12

2025-04-10 12:56:45

CDK v0.9.0 with support for amoutless bolt11 invoices
https://github.com/cashubtc/cdk/releases/tag/v0.9.0

2025-04-09 10:04:34

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Yeah I’m hoping someone else will though lol

2025-04-09 09:53:17

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Yeah I know really hopefully we all switch one day but for now be cool to see it in signal.
By the way this might be of interest to you guys. https://github.com/davidcaseria/cdk_flutter

2025-04-09 09:35:58

Someone should fork signal and replace mobile coin with ecash

2025-04-02 07:45:21

Cdk website:
https://cashudevkit.org

2025-03-12 14:32:50

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Good luck with the merge/rebase conflicts

2025-03-10 23:35:49

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Join us

2025-02-13 13:23:16

CDK Release
CDK v0.7.1: https://github.com/cashubtc/cdk/releases/tag/v0.7.1
CDK-MINTD: v0.7.2: https://github.com/cashubtc/cdk/releases/tag/cdk-mintd-v0.7.2

2025-01-16 19:06:51

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And half the ads are actually just actual scams.

2025-01-16 18:37:08

At this point my nostr ux is better then twitter. The x app just quits anytime I attempt to do anything

2025-01-16 18:29:35

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Damn I've wanted this for so long.

2024-12-23 16:02:20

https://cdn.satellite.earth/9f2264d6b810a14ecbfb2727dfa995ee867407a78567d24831f07c7615586426.jpg

2024-12-20 14:42:37

https://cdn.satellite.earth/fa980f4cea3e57afe5ca4b32bfe6996aa95d519082d863ec060c5c85eec1d297.jpg

2024-12-19 12:58:50

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Usually I do as well.

2024-12-18 14:11:55

https://cdn.satellite.earth/97d06b2087c88853601323f15ad03899778d09d18eb9d9be4fcc9745528824bf.jpg

2024-12-17 14:17:15

CDK v0.6.0 with mint and wallet websocket support
https://github.com/cashubtc/cdk/releases/tag/v0.6.0

2024-12-16 19:14:27

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We can hope

2024-12-16 18:03:16

https://youtube.com/shorts/oy0QD-40ppg
Just JS things

2024-12-16 10:43:58

Finally used @nprofile…zjmq for its intended purpose, a nice plane nap.

2024-12-14 22:06:50

https://cdn.satellite.earth/f3ba337f7c81778d9f21808d9df483b9047a1d037ab5a463afe578780677fb8d.jpg

2024-12-12 10:12:40

I do not enjoy docker

2024-12-11 14:02:39

https://cdn.satellite.earth/71a95b82143dec02897b371e2ebc7bc1c2b652718ced3c85ee93eac5226ee650.jpg

2024-12-09 14:58:44

https://cdn.satellite.earth/887abbf7ffa92214f576192399f1432cdcfbcf1f74c1df5c0d2fafa95a7f8a41.jpg

2024-12-09 08:54:50

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Have you thought about a way to hide certain images from the olas feed. For example some images I would want to only show up with their text context (like this one) so the olas can have more of a curated instagram style of images. In the attached image I would want to hide the second row of images on olas.
https://cdn.satellite.earth/303e561bcf4508f0ff5790a47ffb83daba6867488f5d89b7bc2d260d5eb08adc.png

2024-12-07 12:12:31

https://cdn.satellite.earth/b7093a94ded4b3fadd8a137031545b34bd478625415adcd0446f948eb9799f84.jpg

2024-12-06 08:07:27

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Donegal north of Letterkenny

2024-12-05 13:26:02

https://cdn.satellite.earth/bf2dec50abf5e45b6eb0a5c0a150c765d0a0d0343be90828ebd2960f898f61e8.jpg
#photography #ireland

2024-12-03 13:47:00

https://image.nostr.build/13af5eb4716a133004056dcde70c798536d95cdf1330e9699f887d797b6b25ef.jpg

2024-11-21 23:03:21

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If the api was expanded settings could be stored client side and included in the api request still pay with ecash and avoid the need for accounts.
Of course settings could be used to fingerprint depending on how specific or uncommon your specific set of settings is. So some loss of privacy.

2024-11-21 22:47:15

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Yeah its just a really simple wrapper around their api. The benefit is no account so more private. Trade off is you can't do customization per account since there is no account.

2024-11-21 22:31:17

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Just pay with ecash no need for an account.
https://athenut.com/

2024-11-21 21:03:50

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The cdk-mintd is actually the mint implementation https://github.com/cashubtc/cdk/tree/main/crates%2Fcdk-mintd athenut mint is just the one I did for athenut.

2024-11-08 00:26:37

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Anything in the console log?

2024-11-04 09:50:59

https://image.nostr.build/544c8bc3ac463d8456690944df05d21afb2e3545ec27569ed7fbd9b69c7cd8b2.jpg

2024-10-31 08:55:39

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If you go to topup now (https://athenut.com/topup) do you see a list of invoices?

2024-10-30 07:15:35

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Yeah it's just what the api costs me I have no profit motive just trying not to lose money would love for it to be cheaper.

2024-10-29 22:37:26

would be a good one

2024-10-29 22:26:26

Javascript is scary

2024-10-29 15:43:43

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#nevent1q…9k7n

2024-10-29 14:15:45

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Nice work, Erik I've been sitting on this awhile because I didn't want to do the front end glad you took it on and its live.

2024-10-29 14:00:00

Just bolt a full cashu mint onto a webserver in like 300 lines of code
https://github.com/thesimplekid/athenut-mint

2024-10-29 13:54:08

Sure, https://athenut.com/search?q={search_query}
With an X-Cashu header with a token from https://mint.athenut.com/

2024-10-29 13:32:05

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You have to create and be signed into an account to search with kagi. No account needed for athenut.

2024-10-25 20:41:58

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Move

2024-10-13 11:07:56

lno1pgjrxvrxx56nvc3395uxvcfe956xzctr943rxv3k95mnxe3cx4jnzdrrvd3ryrsyvu9az9skyypw99mh4h0g5n9zyzxlyzww06jh3ttmd302fupdqzemzqjalrjc49s

2024-10-05 10:39:27

https://image.nostr.build/15d8f00e12401e7a71759fce66f1657ac7040f5f89c0f7b9cc8e307a2741eeb0.jpg

2024-10-05 10:16:03

On left is cdk wallet creating a bolt12 mint quote from a cdk mint running with core lighting as the funding source. On the right that bolt12 offer is paid by a cashu melt quote from a cdk mint running with phoenixd as the funding source.
https://m.primal.net/LLrE.webm

2024-10-03 16:00:17

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I looked at sled but used redb over it since sled hasn't seen an update in a few years.

2024-10-03 10:47:31

Cashu mint melting to Bolt12 offer
https://m.primal.net/LJjU.webm

2024-09-29 13:04:52

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Norway. On the hurtigruten between Trondheim and Bergen.

2024-09-29 10:42:04

https://image.nostr.build/c9c2b5d6334763b5f51418e021accc8c27b245c71c4c3d417d4bfdae22354860.jpg

2024-09-22 09:02:14

https://image.nostr.build/78f02f251c25d9b3c18d4daee17a27b8ffbf642270a3dfd0a377877245f64313.jpg

2024-09-18 04:53:14

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Trondheim, Norway

2024-09-17 16:01:43

https://image.nostr.build/822a7efa7501e3d3843ded8e53fd2c6fede0b63d6d9544df97c6a1eafbd7c6c1.jpg

2024-09-11 22:08:16

@nprofile…3xgh when I hit back on android it exits the app instead of going back. Might be because I'm the only one to still use the buttons and not gestures.

2024-09-08 19:48:28

https://image.nostr.build/f8756172aa154ca84d98486e75f0c7bbb9a6ac67170c0e41cd0e4dc96f9d2b5b.jpg

2024-09-02 21:55:49

Cashu Dev kit on ngit
https://gitworkshop.dev/r/naddr1qqpkxertqyxhwumn8ghj7mn0wvhxcmmvqgsqfyvdlsmvj0nakmxq6c8n0c2j9uwrddjd8a95ynzn9479jhlth3grqsqqqaue45g60y
cc @nprofile…crvd

2024-08-31 17:46:08

https://image.nostr.build/bdb7a09db4ce5bf600e129f3422ad4d8a97d83882bae3703cde22d718a2da59e.jpg

2024-08-25 12:56:12

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Had the same thought this morning

2024-08-22 20:04:33

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Zapped from minibits

2024-08-18 09:45:46

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Strange seems to be working for me

2024-08-17 19:07:41

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Really need to test and merge my update PR for this

2024-08-16 16:33:55

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So good

2024-08-13 18:11:08

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What are you considering spent? When the proof is sent from one person to the other. Or when the receiver actually claims it from the mint.

2024-08-13 17:51:52

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Are only the proofs stored on nostr not quotes etc?
And it's just the one replaceable event so each time a transaction is made that event is replaced removing spent proofs and adding new unspent proofs?
Cc @nprofile…2hk2

2024-08-13 17:35:18

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I'll meet you at the pub after your run.

2024-08-13 17:32:29

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How does a nsac differ from nsec? Is your prototype public?

2024-08-05 19:33:47

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Was just working on it. Think its mostly done just need to figure out how to test it since greenlight doesnt support mutiny net and test net is a pain.
https://github.com/cashubtc/cdk/pull/275

2024-08-03 16:41:37

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Mutiny net

2024-07-18 20:30:40

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At this point its a very naive drop in of your example code. But I'll get back to you as I clean it up over the next day or two.

2024-07-18 18:45:58

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I put PDK and a BDK wallet into a CDK mint lol. So that linked transaction is actually minting cashu tokens for the payjoin deposit.

2024-07-18 14:58:45

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This felt like a challenge.
https://mutinynet.com/tx/287a32044c19c75b4b11a28a257a68b690d87eff55c320107f8b1f43f25ef1f2

2024-07-01 18:40:15

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

2024-07-01 18:28:47

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The amount and the mint are in the token. Is the idea behind putting them in the tags so that clients don't have to parse tokens? If so how is posting an amount tag of 1000 but a token worth something else handled?

2024-06-19 15:34:09

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Nostr development goes agile

2024-06-19 13:14:39

We're really stretching these things now
https://m.primal.net/IqWx.png

2024-06-14 19:01:56

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Ah nice didn't realize there was an integrated cashu wallet.
Is there any sort of arbitration or once you pay you're trusting the seller?
One way I can think to do this with cashu is P2PK locked tokens. 2/3 seller, buyer and a mediator. If there is no dispute seller and buyer can sign without a 3rd party. If there is a dispute mediator sides with seller or buyer.
fyi could be of interest: https://github.com/cashubtc/nuts/pull/124

2024-06-14 18:04:39

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What does pay with cashu on shopstr do? Can you just paste tokens from any mint?

2024-06-09 09:45:37

- reply

Lock the token to their nostr public key. DM it to them if you want it to be a private donation. Post it publicly if you want it public only they can claim it