Bitcoin BLAKE2b fork faces Sept. 1 launch test

A faction within Bitcoin development is preparing to launch a separate chain on September 1 that would replace Bitcoin's current SHA-256d hashing algorithm with BLAKE2b. Backers of Bitcoin Knots are driving the initiative, which would create a fork distinct from the main network. The transition appears designed to require minimal user action - holders would not need to move funds, though they should verify four specific conditions to understand their position across both chains.

The move reflects ongoing debate within the Bitcoin community about protocol changes. David Schwartz has publicly challenged supporters ahead of the scheduled launch, signaling technical or philosophical disagreement over the fork's viability or merit. The September 1 date represents a concrete testing point for whether this alternative chain can gain meaningful adoption or technical validation.

• Bitcoin Knots developers plan to fork Bitcoin's network with a new hashing algorithm (BLAKE2b replacing SHA-256d) starting September 1, requiring no fund transfers but some user verification.
• The fork has drawn pushback from figures like David Schwartz, reflecting unresolved debate over the technical and strategic rationale for the change.
• The launch will test whether an algorithm-swapped Bitcoin variant can attract sufficient network participation and development support.