This Week in Mining: February 3rd

A few updates this week in the world of mining:

  1. Bitcoin SV (BSV) conducted a hardfork which resulted in a non-trivial number of nodes remaining on an incompatible version. This caused a brief chain split that appears to have been resolved as of this writing.

  2. Researcher Hasu describes a new form of 51% attack called the “Purge” attack in which an attacker with sufficient hashing power replaces a number of the most recent blocks with empty blocks, sending previously confirmed transactions back into the mempool.

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