Identical-runtime sibling. The ethereum.org 'advanced' MyToken (Homestead, Mar 2016): an issuer-minted token with mintToken, freezeAccount/FrozenFunds and the s
Historical Significance
The advanced central-minter variant from the ethereum.org token tutorial, adding minting and account-freezing on top of the basic token.
Context
Compiled with soljson-v0.2.0 (optimizer ON); exact match of the 1093-byte runtime. One of 20 byte-identical deployments.
Token Information
Key Facts
Source Verified
Exact runtime bytecode match. Runtime: 1093 bytes (byte-for-byte), compiled with soljson-v0.2.0+commit.4dc2445e, optimizer ON. The on-chain creation (1866 bytes) appends ABI-encoded constructor args (initialSupply, tokenName, decimalUnits, tokenSymbol, centralMinter); the 1093-byte runtime is the shared cluster invariant.
Heuristic Analysis
The following characteristics were detected through bytecode analysis and may not be accurate.
Frontier Era
The initial release of Ethereum. A bare-bones implementation for technical users.
Bytecode Overview
Verified Source Available
Source verified through compiler archaeology and exact bytecode matching.
View Verification ProofShow source code (Solidity)
contract MyToken {
/* Public variables of the token */
string public name;
string public symbol;
uint8 public decimals;
address public issuer;
/* This creates an array with all balances */
mapping (address => uint256) public balanceOf;
mapping (address => bool) public frozenAccount;
/* This generates a public event on the blockchain that will notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
event FrozenFunds(address target, bool frozen);
/* Initializes contract with initial supply tokens to the creator of the contract */
function MyToken(uint256 initialSupply, string tokenName, uint8 decimalUnits, string tokenSymbol, address centralMinter) {
if (centralMinter != 0) issuer = centralMinter;
else issuer = msg.sender;
balanceOf[issuer] = initialSupply;
name = tokenName;
symbol = tokenSymbol;
decimals = decimalUnits;
}
/* Send coins */
function transfer(address _to, uint256 _value) {
if (balanceOf[msg.sender] < _value || balanceOf[_to] + _value < balanceOf[_to] || frozenAccount[msg.sender]) throw;
balanceOf[msg.sender] -= _value;
balanceOf[_to] += _value;
Transfer(msg.sender, _to, _value);
}
function mintToken(address target, uint256 mintedAmount) {
if (msg.sender != issuer) throw;
balanceOf[target] += mintedAmount;
Transfer(0, target, mintedAmount);
}
function freezeAccount(address target, bool freeze) {
if (msg.sender != issuer) throw;
frozenAccount[target] = freeze;
FrozenFunds(target, freeze);
}
}