The BIP-110 community has restarted a minority Bitcoin fork that originally split off on August 8, 2026. As of this report, the revived chain has mined more than 800 blocks. The fork's key change: it swapped the SHA-256d proof-of-work algorithm for Blake2b, a move that alters the mining landscape entirely.
A fork that wouldn't die
The original split happened in August, but the chain stalled. Now it's moving again. The restart isn't a small tweak — it's a fundamental change to how the network secures itself. Blake2b is a different beast from SHA-256d, and miners running old hardware won't be able to participate without significant changes.
Blockchain developer Luke Dashjr has been central to this effort. He's also cut the block size down to 300 KB, a fraction of Bitcoin's standard 1 MB. That's a deliberate choice, not an accident.
What changed under the hood
The proof-of-work switch is the headline. SHA-256d has been Bitcoin's backbone for years, and moving to Blake2b means the fork's mining economics are completely different. ASICs built for Bitcoin won't work here. That could be the point — a way to reset who gets to mine.
The 300 KB block size is the other big shift. It's a sharp reduction, and it signals a philosophical stance. Dashjr has long argued for smaller blocks, and this fork puts that idea into practice. Whether it gains traction is another question.
Who's behind it
Luke Dashjr isn't a newcomer to these debates. He's been a vocal advocate for reducing Bitcoin's block size for years. This fork is the latest expression of that view, and it's now live and producing blocks.
The restart itself is notable. A minority fork that stalls usually stays dead. The fact that it's back, with over 800 blocks mined, suggests there's a committed group pushing it forward. What that group does next — and whether the chain can sustain itself — remains to be seen.
