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Preamble

EIP: 609
Title: Hardfork Meta: Byzantium
Author: Alex Beregszaszi
Type: Standard Track
Category: Core
Status: Draft
Created: 2017-04-23
Requires: 100, 140, 196, 197, 198, 211, 214, 649, 658

Abstract

This specifies the changes included in the hard fork named Byzantium.

Specification

  • Codename: Byzantium
  • Aliases: Metropolis/Byzantium, Metropolis part 1
  • Activation:
    • Block >= 4,370,000 on Mainnet
    • Block >= 1,700,000 on Ropsten testnet
  • Included EIPs:
    • EIP 100 (Change difficulty adjustment to target mean block time including uncles)
    • EIP 140 (REVERT instruction in the Ethereum Virtual Machine)
    • EIP 196 (Precompiled contracts for addition and scalar multiplication on the elliptic curve alt_bn128)
    • EIP 197 (Precompiled contracts for optimal ate pairing check on the elliptic curve alt_bn128)
    • EIP 198 (Precompiled contract for bigint modular exponentiation)
    • EIP 211 (New opcodes: RETURNDATASIZE and RETURNDATACOPY)
    • EIP 214 (New opcode STATICCALL)
    • EIP 649 (Difficulty Bomb Delay and Block Reward Reduction)
    • EIP 658 (Embedding transaction return data in receipts)

References

  1. https://blog.ethereum.org/2017/10/12/byzantium-hf-announcement/

Copyright

Copyright and related rights waived via CC0.