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Tenth Wave of Bitcoin Grants
OpenSats is pleased to announce a new wave of grants supporting six projects advancing the Bitcoin ecosystem.
This round includes three first-time project grants—each showcasing promising developments in self-custody, Lightning-based financial tools, and developer sustainability. Additionally, we're renewing our commitment to three existing project grants that continue to push the boundaries of decentralized infrastructure and secure bitcoin usage.
The three first-time project grants in this wave are:
Thanks to the generosity of our donors, OpenSats can actively support the open-source developers and projects that are building key Bitcoin infrastructure and helping Bitcoin flourish.
Let's explore these projects in more detail to understand their goals, contributions, and their role in strengthening the Bitcoin ecosystem.
Bitcoin Safe
Bitcoin Safe is an open-source, self-sovereign bitcoin wallet designed for secure and intuitive self-custody. By integrating BDK, nostr, and Compact Block Filters (BIP 158), it enhances privacy and reliability while reducing reliance on centralized servers. Currently in beta, Bitcoin Safe streamlines self-custody by simplifying single- and multi-signature storage, drawing inspiration from Electrum, Sparrow, and mempool.space.
One of Bitcoin Safe's standout features is "Sync & Chat", an innovative messaging system that leverages nostr relays to route encrypted messages and metadata between users and devices. Whenever a Bitcoin Safe Wallet sends a PBST to another Bitcoin Safe Wallet, the transaction labels are synced between devices, and when multi-sig users message each other concerning the status of their transaction, all of this encrypted communication is securely relayed over nostr.
Next steps for Bitcoin Safe include refining the "Sync & Chat" feature by improving nostr relay reliability, transitioning to bdk_wallet v1.1.0 for improved performance and privacy, and implementing deterministic builds for Windows and Linux.
Repository: andreasgriffin/bitcoin-safe
License: GPL-3.0
Stable Channels
Stable Channels is an open-source project introducing bitcoin-backed dollar balances to the Lightning Network, enabling decentralized, self-custodial stable value transactions without relying on centralized stablecoins. By matching users seeking stable USD exposure with those desiring leveraged bitcoin positions, Stable Channels facilitates synthetic dollar balances through frequent, price-adjusted settlements over Lightning payment channels. This approach maintains dollar-pegged stability for one party while providing leveraged bitcoin exposure for the counterparty. The project has also collaborated with Cashu to integrate its stability mechanism into eCash mints, allowing users to mint USD and EUR tokens backed by bitcoin.
Looking ahead, Stable Channels will continue developing its Rust-based reference implementation using LDK and BDK, ensuring compatibility across server, desktop, and mobile platforms. Key milestones include deploying an iOS app for interacting with custom LSPs, launching an alpha version in early 2025, and refining the software based on user feedback. The project also plans to release a stable version across all platforms and develop a decentralized marketplace using Liquidity Ads, further enhancing Bitcoin's Lightning Network with self-custodial, stable financial tools.
Repository: toneloc/stable-channels
License: GPL-3.0
Waye
Waye is an initiative dedicated to supporting the well-being of developers building open-source technologies, aiming to reduce burnout and improve the long-term sustainability of their work. Recognizing the unique challenges faced by grant-funded, unaffiliated open-source developers—who often juggle engineering, project management, and community roles—Waye has launched pilot programs to address these issues. These initiatives include academic research, group coaching, and the development of scalable, openly shared frameworks.
At the heart of their mission is OS Reboot, Waye's cornerstone program, with monthly expert-led discussions, structured group work, and reflection periods to provide sustained, practical support for open-source developers. The outcomes of Waye initiatives will be open-sourced, providing the broader community with methodologies and frameworks to better support FOSS contributors. By fostering a more resilient and diverse developer community, Waye aims to strengthen the human infrastructure essential for advancing decentralized technologies. If you are an open-source developer looking for support, reach out to Waye
Repository: waye-dev/waye
License: N/A
In addition to the above, OpenSats has also renewed project grants for Floresta, Krux, and Krux-Installer.
Bitcoin's strength lies in its open, permissionless nature—sustaining that requires continued support for free and open-source development. Thanks to the generosity of our donors, OpenSats can fund builders like those featured here, working to make Bitcoin more secure, decentralized, and accessible.
If you'd like to support open-source development, consider making a donation. Every contribution helps sustain the people and projects shaping Bitcoin's future.