Most Notorious Failed Bitcoin Forks

Several Bitcoin forks have attempted to alter its core protocol but ultimately failed due to lack of consensus, technical challenges, or community division.

The top 3

1. Early Attempt: Bitcoin XT's Short Reign: Bitcoin XT, launched in 2015 by prominent developers Gavin Andresen and Mike Hearn to increase the block size, failed to gain sufficient community consensus and miner support, leading to its obsolescence.
2. The Block Size Debate: Bitcoin Classic's Demise: Bitcoin Classic, another 2016 proposal to increase the block size to 2MB, also failed to achieve widespread adoption and eventually shut down, with its developers shifting support to Bitcoin Cash.
3. Bitcoin Cash SV: The Contentious Split: Bitcoin SV (BSV) forked from Bitcoin Cash in 2018, aiming for massive block sizes and the 'original Satoshi Vision,' but faced significant controversy, delistings from major exchanges, and substantial mining losses.

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