We are hard forking bitcoin to a 2 MB blocksize limit. Please join us.

The data show consensus amongst miners for an immediate 2 MB increase, and demand amongst users for 8 MB or more. We are writing the software that miners and users say they want. We will make sure that it solves their needs, help them deploy it, and gracefully upgrade the bitcoin network’s capacity together.

We call our code repository Bitcoin Classic. It starts as a one-feature patch to bitcoin-core that increases the blocksize limit to 2 MB. We will have ports for master and 0.11.2, so that miners and businesses can upgrade to 2 MB blocks from any recent bitcoin software version they run.

In the future we will continue to release updates that are in line with Satoshi’s whitepaper & vision, and are agreed upon by the community.



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  • Jonathan Toomim
  • Gavin Andresen
  • Ahmed Bodiwala
  • Jeff Garzik
  • Peter Rizun


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  • Olivier Janssens
  • Roger Ver
  • Peter Ng