Gavin Andresen Proposes Block Size Increase
Bitcoin’s chief scientist Gavin Andresen formally proposes raising the block size limit, laying the foundation for the future block size wars.
On April 8, 2014, Gavin Andresen, then serving as Bitcoin’s chief scientist, published a proposal to increase the protocol’s 1 MB block size limit. Andresen argued that the existing cap, originally implemented by Satoshi Nakamoto as a temporary anti-spam measure, was becoming a bottleneck as transaction volume grew.
His proposal aimed to expand Bitcoin’s capacity and ensure its viability as a global payment system. While many developers and users agreed that scaling was essential, others expressed deep concern that raising the limit would centralize mining and threaten Bitcoin’s decentralization. This early debate foreshadowed the contentious 'block size wars' that would dominate the community from 2015 to 2017, eventually leading to hard forks like Bitcoin Cash.
At the time, Andresen’s proposal was viewed as a pragmatic step to future-proof the network, but it also revealed philosophical divides: Was Bitcoin primarily a digital cash system that needed mass adoption, or a secure settlement layer where efficiency took precedence over speed?The April 2014 proposal marked the first major flashpoint in what became one of Bitcoin’s most defining internal struggles.