
AirGap will integrate Stellar into its self-custody wallet, enabling users to securely manage XLM and Stellar-based assets with offline signing.
AirGap Vault: Allows users to generate and store Stellar private keys in an air gapped environment, ensuring maximum security.
AirGap Wallet: Enables Stellar transactions with offline signing, preventing online exposure of private keys.
airgap-coin-lib Support: Stellar integration in our open-source library will empower developers to build on Stellar with secure, offline-first tooling.
Maybe in the future, but not in this submission
$60.0K
All Stellar users will be able to create a cold wallet setup at home using any spare device. Apart from this, we expect -
5,000+ new Stellar wallets created in AirGap - Expands self-custody adoption on Stellar.
Increased Stellar transactions via AirGap - Enhances network activity and user engagement.
Secure storage for Stellar and Stellar tokens - Users can safely store, send, and receive assets with full self-custody.
Advanced security features - Users benefit from Social Recovery, BIP-85 deterministic seed derivation, BIP-39 passphrase protection, and verifiable randomness via coin flip and dice roll.
High retention rate of new users - This ensures long-term adoption beyond initial onboarding.
Publish in-depth guides and blog posts explaining using AirGap for Stellar transactions and self-custody.
Create video tutorials demonstrating Stellar integration, secure signing, and staking.
Organize AMAs (Ask Me Anything) sessions with the AirGap and Stellar communities to answer questions and showcase benefits.
Run giveaways and engagement campaigns to incentivize users to try the integration.
Official announcements across AirGap’s and Stellar’s social channels (Twitter, Discord, Telegram).
Press releases and blog posts highlighting the security and usability advantages of AirGap for Stellar users.
AirGap has established itself as a trusted self-custody solution with over 200,000+ downloads across AirGap Wallet and AirGap Vault. Our growing community includes 23,000+ members, actively engaging with our open-source ecosystem.
We have secured grants from Polkadot, ICP, Optimism, Tezos, and Cosmos, reflecting strong recognition and support from major blockchain ecosystems. This traction highlights AirGap’s reliability, security, and adoption as a go-to solution for decentralized asset management.
Deliverable 1: AirGap CoinLib ($15,000)
AirGap follows a modular architecture, with airgap-coin-lib serving as the foundational layer for integrating new blockchains. It handles the core transaction logic—constructing raw transactions (including inputs, outputs, fees, and memos), defining how transactions are cryptographically signed using private keys, and implementing the network communication needed to broadcast signed transactions to the blockchain.
Addition of Stellar in AirGap Coinlib library
Anyone can integrate Stellar in their wallet using AirGap coinlib
AirGap will use this to integrate Stellar to Vault
Deliverable 2: AirGap Vault: ($15,000)
Use airgap coin-lib to integrate stellar to AirGap Vault
Enable air-gapped signing for Stellar transactions in AirGap Vault.
Allow users to securely generate and store Stellar private keys.
Provide offline verification and signing of XLM transactions before broadcasting.
Enable Stellar account creation using additional device entropy(Gyro, camera, microphone and touch) , dice roll and coin flip entropy.
Total Tranche Budget - $30,000
Description:
Implement support for creating and broadcasting Stellar transactions from AirGap Wallet.
Provide a seamless experience for users to manage their XLM holdings.
Users can securely store, send, and receive Stellar assets in AirGap Vault & Wallet.
Estimated Completion: 10 weeks from grant approval
Total Tranche Budget - $20,000
Description:
Addition of top 5 Stellar tokens by market cap. USDC, EURC, VELO, SHX, AQUA.
Users will also be able to connect AirGap Wallet to Stellar Dapps using Wallet Connect.
Additional Bug Fixes
Launching the final product on Apple App store, Google Play store and GitHub
Estimated Completion: 6 weeks after MVP milestone
Total Tranche Budget: $10,000
Papers AG was founded in 2009 by Alessandro De Carli (CEO), Lukas Schoenbachler, Niklaus Knecht (CMO) and Pascal Brun (COO). Later on joined by Mike Godenzi (CTO). Together with a team of 24 skilled developers, marketing and community managers as well as sales people, we have vast experience in mobile security applications and blockchain-powered applications.
Meet all of our team members here:

