MistCoin reverse engineering

Purpose of this repo is to get the Solidity source code of the very first ERC-20 token called MistCoin (MC) which was created on November 3rd, 2015

Learnings so far

• Compiler has to be Solidity <= 0.1.6 since the contract was deployed on November 3rd, 2015 and version 0.1.7 was release on November 17 2015. See Solidity version history
• In this Reddit post which was exactly on the same date as the deployment of MistCoin Fabian included a link of the Mist wallet (version 0.3.5) and release notes on how to deploy a token.
• The token example which was used does contain all the methods of the MistCoin token. This example is included in the repo at contracts/MyToken.sol. However it doesn't compile to the bytecode of the MistCoin contract
• The sol contract is in this public gist

Notes

• MistCoin token on Etherscan
• You can use this webpage to see the bytecode of a function. for example putting in name() converts to 06fdde03 (remove the 0x part)

Bytecode

The bytecode that comes with the contract

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

Functions in the bytecode

06fdde03 -> name()
313ce567 -> decimals()
70a08231 -> balanceOf(address)
95d89b41 -> symbol()
a9059cbb -> transfer(address,uint256)

Compile

• Make sure you have nodejs installed
• Make sure the solc dependency is installed (npm i)
• Run node deploy.js to compile the contract contracs/MyToken.sol

When successful you will see this text in the console:

Special thanks to:

• avsa
• feindura
• Heisenburgirs