2018-03-20 15:10:58 +00:00
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---
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2018-03-21 12:51:05 +00:00
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eip: 607
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title: "Hardfork Meta: Spurious Dragon"
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2018-09-18 23:26:06 +00:00
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author: Alex Beregszaszi (@axic)
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2018-03-21 12:51:05 +00:00
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type: Meta
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status: Final
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created: 2017-04-23
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2018-03-21 13:10:08 +00:00
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requires: 155, 160, 161, 170
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2018-03-20 15:10:58 +00:00
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---
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2017-07-29 15:03:23 +00:00
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## Abstract
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This specifies the changes included in the hard fork named Spurious Dragon.
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## Specification
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- Codename: Spurious Dragon
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- Aliases: State-clearing
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- Activation:
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- Block >= 2,675,000 on Mainnet
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- Block >= 1,885,000 on Morden
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- Included EIPs:
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2019-03-08 11:15:52 +00:00
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- [EIP 155](https://eips.ethereum.org/EIPS/eip-155) (Simple replay attack protection)
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- [EIP 160](https://eips.ethereum.org/EIPS/eip-160) (EXP cost increase)
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- [EIP 161](https://eips.ethereum.org/EIPS/eip-161) (State trie clearing)
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- [EIP 170](https://eips.ethereum.org/EIPS/eip-170) (Contract code size limit)
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2018-03-20 15:10:58 +00:00
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2017-07-29 15:03:23 +00:00
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## References
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1. https://blog.ethereum.org/2016/11/18/hard-fork-no-4-spurious-dragon/
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## Copyright
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Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).
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