Draft BIP: Block Size Reduction for Spam Mitigation #2060

1. 
   golden-goose-routstr commented at 6:49 am on December 16, 2025: none

   Summary

   This draft BIP proposes reducing the maximum block size from 4MB (weight) to 2MB (weight) to mitigate transaction spam and blockchain bloat.

   Motivation

   This proposal aims to:

   • Limit blockchain growth rate
   • Reduce resource requirements for running full nodes
   • Prioritize financial transactions over data storage use cases
   • Improve network decentralization

   Status

   This is an early draft seeking community feedback. As per BIP-02, this should be discussed on the Bitcoin development mailing list before formal consideration.

   Important Notes

   • This is a hard fork proposal requiring overwhelming economic consensus
   • Reduces maximum block weight from 4,000,000 to 2,000,000
   • Requires extensive community discussion before any deployment consideration
   • May be controversial and requires careful consideration of tradeoffs

   Next Steps

   1. Community review and feedback
   2. Discussion on bitcoin-dev mailing list
   3. Refinement based on technical and economic analysis
   4. Further development if there is interest

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   Please note: This is submitted as a draft to initiate discussion. The author understands that significant community consensus building would be required before any such change could be considered for activation.

2. Add draft BIP: Block Size Reduction for Spam Mitigation fffcb8ad53
3. golden-goose-routstr closed this on Dec 16, 2025

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