mirror of https://github.com/status-im/EIPs.git
64 lines
2.3 KiB
Markdown
64 lines
2.3 KiB
Markdown
---
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EIP: 779
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Title: "Hardfork Info: DAO Fork"
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Author: Casey Detrio
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Type: Informational
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Status: Final
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Created: 2017-11-26
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---
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## Abstract
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This documents the changes included in the hard fork named "DAO Fork". Unlike other hard forks, the DAO Fork did not change the protocol; all EVM opcodes, transaction format, block structure, and so on remained the same. Rather, the DAO Fork was an "irregular state change" that transferred ether balances from a list of accounts ("child DAO" contracts) into a specified account (the "WithdrawDAO" contract).
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## Specification
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- Codename: DAO Fork
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- Activation:
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- Block == 1,920,000 on Mainnet
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See references [1] and [2] for the original, full specification. It is summarized here for convenience.
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At block 1880000, the following accounts are encoded into a list `L`:
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* The DAO (`0xbb9bc244d798123fde783fcc1c72d3bb8c189413`)
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* its extraBalance (`0x807640a13483f8ac783c557fcdf27be11ea4ac7a`)
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* all children of the DAO creator (`0x4a574510c7014e4ae985403536074abe582adfc8`)
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* and the extraBalance of each child
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At the beginning of block 1920000, all ether throughout all accounts in `L` will be transferred to a contract deployed at `0xbf4ed7b27f1d666546e30d74d50d173d20bca754`. The contract was created from the following Solidity code (compiler version `v0.3.5-2016-07-01-48238c9`):
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```
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// Deployed on mainnet at 0xbf4ed7b27f1d666546e30d74d50d173d20bca754
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contract DAO {
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function balanceOf(address addr) returns (uint);
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function transferFrom(address from, address to, uint balance) returns (bool);
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uint public totalSupply;
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}
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contract WithdrawDAO {
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DAO constant public mainDAO = DAO(0xbb9bc244d798123fde783fcc1c72d3bb8c189413);
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address public trustee = 0xda4a4626d3e16e094de3225a751aab7128e96526;
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function withdraw(){
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uint balance = mainDAO.balanceOf(msg.sender);
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if (!mainDAO.transferFrom(msg.sender, this, balance) || !msg.sender.send(balance))
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throw;
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}
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function trusteeWithdraw() {
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trustee.send((this.balance + mainDAO.balanceOf(this)) - mainDAO.totalSupply());
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}
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}
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```
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## References
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1. https://blog.slock.it/hard-fork-specification-24b889e70703
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2. https://blog.ethereum.org/2016/07/15/to-fork-or-not-to-fork/
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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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