Bitcoin mining will be open-source,or Bitcoin remains permissioned
We're building the open-source
Bitcoin mining stack.
Bitcoin mining does three jobs.
It issues new coins, settles transactions, and secures the record.
Today, that machinery is closed.
The machines this whole industry runs on are unauditable, unfixable, and permissioned.
It takes the recipes.
A miner is four unique building blocks. We open-sourced all four.
Ember One
Open hashboard reference design
Libre Board
Open control board reference design
Mujina
Open mining firmware, the Linux OS of Bitcoin mining
Hydrapool
One-click open-source mining pool
Together, the four form the Development Kit.
See the mining stack →They run.
In 2025, miners around the world pointed hashrate at our pool and found Bitcoin block 881423. Nine months later, our four projects ran together as a complete open-source mining kit. Real work, in public.
We fund the builders.
Grants for open-source Bitcoin mining work. Money from anyone, influence from no one.
A community, in code and out of it.
The forum is where the work gets argued out. The group chat is where it starts. Builders, miners, and advocates, worldwide.
What's new.
Additional Funding Extends Mujina's 2026 Term Through December: Flashable Images and an Installer Are Next
Additional funding extends Mujina's 2026 term through December without a pause. The final stretch: S19j Pro and S19k Pro polish, flashable OS images, and the installer that boots a miner straight into open firmware.
Sophisticated Banter, SaaS Honeypots, and Open-Source Mining
In this episode, we had some fun with the idea that POD256 might be a “sophisticated” Bitcoin mining podcast, then used that as a springboard to talk about what listeners really want from technical Bi
Assembling Freedom #27
From POD256 ep. 115 - Bitaxe to Exahash: Inside HydraPool’s Record Stress Test and What’s Next
Help us keep every layer open.
Money from anyone. Influence from no one. Every layer of Bitcoin mining, open for good.