## Preamble

    EIP: 607
    Title: Hardfork Meta: Spurious Dragon
    Author: Alex Beregszaszi
    Type: Meta
    Status: Final
    Created: 2017-04-23
    Requires: 155, 160, 161, 170

## Abstract

This specifies the changes included in the hard fork named Spurious Dragon.

## Specification

- Codename: Spurious Dragon
- Aliases: State-clearing
- Activation:
  - Block >= 2,675,000 on Mainnet
  - Block >= 1,885,000 on Morden
- Included EIPs:
  - [EIP 155](eip-155.md) (Simple replay attack protection)
  - [EIP 160](eip-160.md) (EXP cost increase)
  - [EIP 161](eip-161.md) (State trie clearing)
  - [EIP 170](eip-170.md) (Contract code size limit)
  
## References

1. https://blog.ethereum.org/2016/11/18/hard-fork-no-4-spurious-dragon/

## Copyright

Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).