Our node is back up and donations via Lightning are enabled again. Inbound liquidity appreciated while we bootstrap. 
OpenSats
Red Team Fund - OpenSats
Funding for people red teaming Bitcoin software.
OpenSats
support@opensats.org
npub10pen...n34f
open source dev funding powered by sats - 100% pass through with no management fees - 501(c)(3) approved - bitcoin for a better world! ⚡
We expect more critical vulnerabilities to be found and patched in the coming days. Keep an eye out for updates via official channels. 
OpenSats
Ongoing Exploits of Bitcoin Software
A critical BTCPay Server flaw affecting LND is under active exploit.
Code RED is live. Priority support for people red teaming Bitcoin software, including reimbursement of past LLM token costs. 
OpenSats
Code RED: Priority support for red teaming
OpenSats is launching a new grant track to support people red teaming Bitcoin software.
NVK is stepping down from the OpenSats board, effective immediately. OpenSats will continue to operate with an 8 person board until a replacement is made.
"We can win a major battle in the arms race and gain a new territory of freedom for several years." (But we can't do it without your support.)
A quarterly update from OpenSats:
OpenSats
Sats Well Spent — 2026-Q2: Territory of Freedom
Someone has to do it: how OpenSats is funding the builders behind a free and open internet.
"The biggest secret is just long hours, attention to detail, and hard work." — @utxo the webmaster 🧑💻
OpenSats
Meet Barry Deen, the Webmaster Behind Wisp
Wisp is Barry Deen’s nostr client, built so everyday people can use the network without fighting it.
The last Pathshalas closed in the 1960s. @Raj wanted to do the same thing for bitcoin. Bitcoin pathshala. Bitshala.
OpenSats
Rajarshi Maitra Found a Point of Light in the Dark Cave, Quit His Job, and Built Bitshala
Rajarshi Maitra walked away from a stable engineering career to build Bitshala, India's school for Bitcoin developers.
"Bitcoin changed the way I view the world, my values, and a big part of my personality. I strongly believe it changed me for the better." — @Egge
OpenSats
Egge’s Bitcoin Journey: From Marketer to Cashu Maintainer
Bitcoin took Egge off the predictable path, leading him towards a brilliant career in FOSS.
OpenSats is pleased to announce long-term support for Calvin Kim in recognition of his ongoing work on btcd and utreexo. 
OpenSats
Long-Term Support For Calvin Kim
OpenSats welcomes Calvin Kim as an LTS grantee.
40 billion sats. 400+ grantees. 40+ countries. 
OpenSats
Map - OpenSats
Countries where OpenSats has awarded grants.
Heartbeat now supports GitLab and plain git repos. Click the heartbeat icon on any project page to see the latest development activity. Example: 
OpenSats
WireGuard - funded by OpenSats
A lean VPN protocol and software suite for secure networking across servers, phones, and desktops.
OpenSats
heartbeat · live bitcoin & nostr open-source activity feed
Live feed of commits, pull requests, issues, and releases across the open-source bitcoin and nostr projects funded by OpenSats.
OpenSats has supported many projects for multiple years. Most projects accept donations directly, and we encourage everyone to support them whenever possible. 
OpenSats
Project Showcase - OpenSats
A showcase of free and open-source Bitcoin and Nostr projects supported by OpenSats.
Lots of building blocks, lots of progress. A closer look at some of the nostr libraries our grantees have been working on. 
OpenSats
The Libraries Behind Open Communication
An impact report from the front-lines of nostr developer libraries.
In our latest newsletter we said that we want to "tell the stories of the people who are working on freedom tech." Our spotlight series aims to do just that. Here's the first installment: 
OpenSats
Made in Africa: Kurt and the Open-Source Bitcoin Miner That Anyone Can Make
Meet Kurt Unger, the OpenSats grantee who's building Bitcoin mining hardware that's understandable, repairable, and open.
New wave of nostr grants: 44Billion, NosCall, Routstr, Wisp, and Zapstore.
OpenSats
Seventeenth Wave of Nostr Grants
OpenSats is funding five open-source projects advancing the nostr ecosystem.
We just published the first issue of "Sats Well Spent" - a quarterly newsletter from OpenSats. You can read it in full here:
OpenSats
Sats Well Spent — 2026-Q1: Cypherpunks Write Code
A quarterly look at the free and open-source projects OpenSats supports, the builders behind them, and the impact your donations make possible.
Twice a year we plan to highlight a focus area where we would like to see strong proposals. This spring, said focus area is base layer privacy.
OpenSats
Call for Applications
OpenSats is seeking grant proposals that advance base layer privacy.
OpenSats remains committed to funding builders who keep Bitcoin's hardware infrastructure open, auditable, and accessible.
OpenSats
Open Hardware for Open Money
An impact report from the front-lines of bitcoin hardware development.