Who's using LDK?

[ConorOkus]

If you are using LDK in your project/library/app you can share the URL here.

Some examples:

• Bitkit - https://bitkit.to/
• Mutiny - https://www.mutinywallet.com/
• CashApp - https://cash.app/

[devrandom]

Not sure in this context if it make sense in this context to include libraries, like VLS.

[ConorOkus]

Yes I think it should, I reworded my original comment to include project/library

[moneyball]

@devrandom which functionality from LDK does VLS use?

[devrandom]

Mostly KeysInterface (signer interface and InMemorySigner implementation) and chan_utils (transaction building utilities).

[dunxen]

Mobile app still in progress and source code not published yet, but sharing the URL so long so I don't forget: https://umbani.app.

[moneyball]

That URL doesn't work for me

[moneyball]

URL still doesn't work. @dunxen what's the correct URL?

[sr-gi]

The Eye of Satoshi is!

https://github.com/talaia-labs/rust-teos (I may need to build a fancy website now 😄)

[shamardy]

AtomicDEX! https://atomicdex.io/
Lightning integration using LDK is currently in progress.

[moneyball]

@shamardy What's the best way to reach you to discuss how your LDK integration is going?

[shamardy]

You can reach me on Slack or Discord. Just replied to your message on Slack 🙂

[TonyGiorgio]

Working on a few projects with LDK:

Hidden Lightning Network - https://github.com/BitcoinDevShop/hidden-lightning-network
A privacy focused lightning wallet (based on Sensei/LDK) - https://github.com/BitcoinDevShop/pln
Experimenting with tor by adapting the ldk-sample node - https://github.com/TonyGiorgio/ldk-sample-tor

[84adam]

Hey Tony: Would ldk-sample-tor be useful for standing up a tor-only lightning node based on LDK? Is that the purpose of this project?

[TonyGiorgio]

oh hey @84adam , sorry just saw this. Yeah that's the purpose of that one. I'm hoping to learn about the right ways to go about tor in an LDK based project so that I can add it to pln and/or sensei eventually.

[Bosch-0]

Would be handy to highlight these projects on the LDK website

[ConorOkus]

Agree, a showcase page + case studies have been pending for a while. Let me know if that's something you would be interested in helping with.

[Bosch-0]

Yeah sure I could design something

[MaxFangX]

Lexe is building a managed, non-custodial wallet using LDK + SGX. We aren't open-source yet, but our GitHub org is here:

https://github.com/lexe-tech

Our landing page will eventually be at either lexe.app or lexe.tech :)

[Tibo-lg]

I'm using LDK for rust-dlc, for communication between nodes mainly but also for a PoC of DLC over lightning
https://github.com/p2pderivatives/rust-dlc

[ConorOkus]

https://cyberhornet.network/

[ConorOkus]

Valera Labs - https://valera.co/

[Kukks]

Still hoping for dotnet bindings to be able to use ldk :(

[tnull]

Maybe it would be of interest to you that the LDK Node project (soon to be released) will provide UniFFI bindings and recently a third-party C# bindings generator extension for UniFFI has been announced: https://github.com/NordSecurity/uniffi-bindgen-cs.

I doubt that we'd want to pull in this dependency into LDK Node itself anytime soon, but it should be straight forward to apply this generator yourself once UniFFI bindings support has been merged. Happy to assist with any questions to that end.

[tnull]

Also note that there are first experiments with C# bindings for LDK (https://github.com/lightningdevkit/ldk-garbagecollected/tree/main/c_sharp), not sure on any timeline though (cc @TheBlueMatt).

[Kukks]

Maybe it would be of interest to you that the LDK Node project (soon to be released) will provide UniFFI bindings and recently a third-party C# bindings generator extension for UniFFI has been announced: NordSecurity/uniffi-bindgen-cs.

I doubt that we'd want to pull in this dependency into LDK Node itself anytime soon, but it should be straight forward to apply this generator yourself once UniFFI bindings support has been merged. Happy to assist with any questions to that end.

Unfortunately, that would be too high-level for us; we would like to implement a node that fits exactly to our needs (our own onchain system, remote signing, magic, etc.) :(

Also note that there are first experiments with C# bindings for LDK (lightningdevkit/ldk-garbagecollected@main/c_sharp), not sure on any timeline though (cc @TheBlueMatt).

Glad to see a recent effort! I recall @joemphilips had done some super early efforts in this regard a while back https://github.com/joemphilips/NRustLightning

[TheBlueMatt]

Sadly I think we're a ways away from dotnet bindings. The initial experimentation seemed to show it would be quite doable with our existing infrastructure, but it's a good bit of investment which we don't currently have resources for. Its great to know someone wants it, though, we definitely prioritize based on user needs.

[benthecarman]

https://github.com/MutinyWallet/mutiny-node

https://github.com/kuutamolabs/lightning-knd

https://github.com/carlaKC/lndk

[moneyball]

Synonym is using LDK in Bitkit https://github.com/synonymdev/react-native-ldk

[moneyball]

https://github.com/ConorOkus/uMlando-wallet

[moneyball]

C= https://cequals.xyz/

[moneyball]

Lipa https://github.com/getlipa

[moneyball]

Velas Commerce https://twitter.com/erikmichaelalv1/status/1583482565918281728

[moneyball]

Mercury Wallet https://github.com/layer2tech/mercury-wallet/branches

[moneyball]

Kuutamolabs https://github.com/kuutamolabs/lightning-knd

[moneyball]

CyberHornet Swarm https://cyberhornet.network/

[moneyball]

Here's an attempt at categorizing applications building with LDK.

Mobile non-custodial apps:

• Blue Wallet
• Synonym Bitkit
• Lipa
• Velas Commerce
• Portico

Browser non-custodial apps:

• Mutiny

Desktop non-custodial apps:

• CyberHornet Swarm
• Mercury Wallet
• Komodo AtomicDEX
• Hydranet

LSPs:

• c=

Managed non-custodial services:

• Lexe
• Valera
• Voltage

LN routers:

• Kuutamo
• Sensei

Server custodial services:

• Cash App

Services using portions of LDK:

• VLS
• TEOS
• LNDK

DLCs:

• rust-dlc
• 10101 - https://10101.finance/

Smart contract platforms:

• RGB Tools - https://github.com/RGB-Tools

Experimentation:

• Hidden Lightning Network - https://github.com/BitcoinDevShop/hidden-lightning-network
• Experimenting with tor by adapting the ldk-sample node - https://github.com/TonyGiorgio/ldk-sample-tor

Teaching/educational apps:

• uMlando

[moneyball]

Portico
https://twitter.com/PorticoExchange
https://porticoexchange.github.io/porticoexchangev2.github.io/

[moneyball]

Voltage

[moneyball]

Hydranet https://hydranet.ai/

[22388o]

RGB Tools - https://github.com/RGB-Tools

10101 - https://10101.finance/

Diba - https://diba.io

RGB - https://rgb.tech

They aren't my projects/companies, but are using LDK :)

[johnsBeharry]

Started a "awesome" directory from this discussion - few projects I wasn't sure how they use LDK though, not personal just didn't know how to categorise them. PRs open though

https://github.com/peakshift/awesome-ldk/

[22388o]

Perfect :)

[crukundo]

EttaWallet: A simple open-source non-custodial bitcoin/lightning wallet with a strong bias towards usability, accessibility and good UX

Logo: https://avatars.githubusercontent.com/u/124452068

Repo: https://github.com/EttaWallet/EttaWallet

[EthnTuttle]

Fedimint is a federated Chaumian e-cash mint backed by bitcoin with deposits and withdrawals that can occur on-chain or via Lightning.

https://fedimint.org/

Repo: https://github.com/fedimint/fedimint

Proof: https://github.com/search?q=repo%3Afedimint%2Ffedimint+lightning+lang%3Atoml&type=code

[okjodom]

@EthnTuttle , your references are the dependencies we have on lightning libraries from LDK, but it's different from what the integration would be when we start building with LDK

[EthnTuttle]

ack! Thnx for the clarification.

[moneyball]

So Fedimint uses LDK's code to create invoices? If so then that qualifies for "building with LDK."

[okjodom]

Ah yes, then we've passed the bar! For some reason, I've been thinking we'll qualify when we are able to have LDK as the node implementation sitting between a Fedimint gateway and the Lightning network. These dependencies alone didn't seem enough because they should be natural first choice dependencies in any rust project doing lightning today.

[moneyball]

they should be natural first choice dependencies in any rust project doing lightning today.

I'm not clear on why this would disqualify this as "building with LDK" then? VLS, TEOS, and LNDK projects only use portions of LDK for their needs, but they're still getting value out of the LDK project, which to me is why it should count if Fedimint does use the LDK code/library for invoices. Maybe because this repo was "imported" into LDK from another non/predated-LDK developer it shouldn't count?

[ConorOkus]

https://github.com/aniketambore/bijli_ln_wallet