Bitcoin Optech #295: Free Relay Attack, TX Fee Sponsorship Improvements

This issue announces the disclosure of a bandwidth-wasting attack affecting Bitcoin Core and related nodes, describes several improvements to the idea for transaction fee sponsorship, and summarizes a discussion about using live mempool data to improve Bitcoin Core’s feerate estimation.

Bitcoin Optech #295: Free Relay Attack, TX Fee Sponsorship Improvements

This issue:

  • announces the disclosure of a bandwidth-wasting attack affecting Bitcoin Core and related nodes;
  • describes several improvements to the idea for transaction fee sponsorship;
  • summarizes a discussion about using live mempool data to improve Bitcoin Core’s feerate estimation;
  • summarizes popular Q&A from Stack Exchange;
  • links to Bitcoin Core 27.0rc1 testing guide;
  • adds a free relay topic;
  • "Bitcoin Optech will host an audio recap discussion of this newsletter with special guests Dave Harding, Peter Todd, Abubakar Sadiq Ismail, David Gumberg, and Jeffrey Czyz on Twitter Spaces Thursday at 14:30 UTC. Join us to discuss or ask questions!"

Full Newsletter / Archive
Spaces Link