Dear Polkadot community, 

We want to present you with a proposal for creating a common hardware (Ledger) wallet app unified to connect with all Polkadot and Kusama parachains.

As the ecosystem grows, it has become increasingly complex for users to manage their assets across various parachains securely. Currently, most parachains either implement their custom solutions and submit them to Ledger Live store themselves (max complexity level) or completely forgo the support for the hardware wallet.

This is where the proposed unified ledger app comes in. The app aims to simplify connecting hardware wallets, specifically Ledger, with the Polkadot ecosystem. **This solution has the following advantages:**
- New integration requires just a repository pool request
- No need to update the app on Ledger when new parachain integrates
- Polkadot/Substrate version upgrades don't require updating the app
- Supports both Polkadot and Kusama parachains

Recently, we have showcased a proof of concept of the app and made the first steps to set the ground for future developments. We've collected initial interest from parachain teams. **Here is the list of projects who already submit PR for integration:**
- Astar & Shiden
- HydraDX & Basilisk
- Zeitgeist
- Manta Network & Calamari
- Bifrost (DOT & KSM)
- Acala & Karura
- Nodle
- Origin Trail
- Ajuna Network & Bajun Network
- Bitgreen
- Crust (DOT & KSM)

**Other things we've done so far:**
- Set up a coordination group with Parity and teams (feel free to approach if you want to join)
- Validated the POC with Ledger
- Confirmed the scope of amendments to comply with the Ledger security audit

With this proposal, we seek retroactive funding to complete the app's development. By making it easier for users to manage their assets across various parachains, the unified ledger app will further enhance the usability and accessibility of the Polkadot ecosystem.

**The detailed proposal text may be found here:** 
[https://docs.google.com/document/d/1TIctLWwpTyZda4U2-ewAnpcVhZefMAp8VY2f7A4E8ng/edit#](https://docs.google.com/document/d/1TIctLWwpTyZda4U2-ewAnpcVhZefMAp8VY2f7A4E8ng/edit#)

: Proposal to create a common Ledger wallet app unified to connect with all Polkadot and Kusama parachains in order to simplify the process of connecting hardware wallets with the Polkadot ecosystem. 

- Proposal for creating a common hardware (Ledger) wallet app unified to connect with all Polkadot and Kusama parachains 
- Currently, most parachains either implement their custom solutions and submit them to Ledger Live store themselves or forgo the support for the hardware wallet
- Benefits of the proposed solution include ease of integration, no need to update the app for new parachains, and support for both Polkadot and Kusama parachains
- Proof of concept showcased and initial interest from parachain teams; some projects have already submitted PR for integration
- Coordination group formed with Parity and teams; POC validated with Ledger and scope of amendments confirmed
- Proposal seeks retroactive funding to complete the app's development

#1795 A Common Ledger App Compatible With All Polkadot And Kusama Parachains [ retroactive funding for development ]

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