About London
London fundamentally reformed Ethereum's fee market with EIP-1559, introducing dynamic base fees and a burn mechanism. It revolutionized how transaction fees work, improved user experience, and began Ethereum's deflationary phase.
Included
5EIPs that are part of the activated upgrade on mainnet.
Fee market change for ETH 1.0 chain
BASEFEE opcode
Reduction in refunds
Reject new contract code starting with the 0xEF byte
EIP-3673
EIP Composition Timeline
Track EIP inclusion stages for London
INCLUDED
SFI
CFI
PFI
DFI
Email updates for London
Follow inclusion and bucket changes for this upgrade.
Email me when EIPs are added, removed, or moved between upgrade buckets.