CampusCoin(CMP)

Token

0x00f0b1e54507...fa1a30e6fcd2

HomesteadContract #12KExact Bytecode MatchEdit this contract

Deployed March 16, 2016 (10 years ago)Block 1,161,639

Byte-identical deployment of: Standard ethereum.org tutorial token (Homestead, Mar 2016): name/symbol/decimals metadata, a public balanceOf mapping and an overf

Homestead EraVerified Source

Historical Significance

The canonical 'create your own token' contract from the ethereum.org tutorial, one of the most-copied teaching contracts of the Homestead era.

Context

Compiled with soljson-v0.2.0 (optimizer ON); exact match of the 716-byte runtime. One of 212 byte-identical deployments.

Token Information

Token Name

CampusCoin

Symbol

CMP

Decimals

Key Facts

Deployer

0x3f760a...10f44a

Deployment Block

1,161,639

Deployment Date

Mar 16, 2016, 10:04 PM

Code Size

716.0 B

Gas at Deploy

354,698

Transactions by Year

20161

Deployment Transaction: 0x75c713b7fa6f274b...9da54a5dd44b3b7a

Source Verified

SolidityExact bytecode match(716 bytes)

Compiler: soljson

View verification proof

Exact runtime bytecode match. Runtime: 716 bytes (byte-for-byte), compiled with soljson-v0.2.0+commit.4dc2445e, optimizer ON. The on-chain creation (1408 bytes) appends ABI-encoded constructor args (initialSupply, tokenName, decimalUnits, tokenSymbol) to the init code; the 716-byte runtime is the shared cluster invariant.

Heuristic Analysis

The following characteristics were detected through bytecode analysis and may not be accurate.

Detected Type: Token

Has ERC-20-like patterns

Homestead Era

The first planned hard fork. Removed the canary contract, adjusted gas costs.

Block span: 1,150,000 — 1,919,999

March 14, 2016 — July 20, 2016

Bytecode Overview

Opcodes716

Unique Opcodes95

Jump Instructions32

Storage Operations18

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

View Verification Proof

Show source code (Solidity)

contract Token {
    string public name;
    string public symbol;
    uint8 public decimals;
    mapping (address => uint256) public balanceOf;
    event Transfer(address indexed from, address indexed to, uint256 value);
    function Token(uint256 initialSupply, string tokenName, uint8 decimalUnits, string tokenSymbol) {
        balanceOf[msg.sender] = initialSupply;
        name = tokenName;
        symbol = tokenSymbol;
        decimals = decimalUnits;
    }
    function transfer(address _to, uint256 _value) {
        if (balanceOf[msg.sender] < _value) throw;
        if (balanceOf[_to] + _value < balanceOf[_to]) throw;
        balanceOf[msg.sender] -= _value;
        balanceOf[_to] += _value;
        Transfer(msg.sender, _to, _value);
    }
}

External Links

Etherscan Verified Source (if any)

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