A fixed-supply token with direct transfers only, deployed December 2016.
Historical Significance
The ethereum.org token tutorial is where most people who deployed a token in this period started, and this is its opening form: a balance mapping, a guarded subtraction and the metadata a wallet needs to show a name. It has no allowance, so nothing can spend on a holder's behalf and no exchange or escrow can be given a limit. That gap is exactly what ERC-20 was written to close, and copies like this one are the before picture.
Context
By late 2016 ERC-20 had settled the interface a token was expected to answer, and the ethereum.org tutorial was still where most people copied one from. OpenZeppelin's contracts were not yet the default, so the code behind a token of this period is usually the tutorial's, with the constructor arguments changed and nothing else.
Token Information
Key Facts
Description
A token from the ethereum.org tutorial. Balances sit in a public balanceOf mapping and transfer(to, value) moves them, throwing rather than returning false when the sender is short and checking the recipient's balance for overflow before adding to it. There is no owner and no way to create further units: the supply written at deployment is the whole supply. It was deployed as Puntos de guardián, with the symbol G and 0 decimal places.
Source Verified
Historian Categories
Heuristic Analysis
The following characteristics were detected through bytecode analysis and may not be accurate.
Spurious Dragon Era
Continued DoS protection. State trie clearing.
Bytecode Overview
Verified Source Available
Source verified through compiler archaeology and exact bytecode matching.
View Verification ProofShow source code (Solidity)
// Submitted by EthereumHistory (ethereumhistory.com)
/**
*Submitted for verification at Etherscan.io on 2025-05-23
*/
contract MyToken {
/* Public variables of the token */
string public name;
string public symbol;
uint8 public decimals;
/* This creates an array with all balances */
mapping (address => uint256) public balanceOf;
/* This generates a public event on the blockchain that will notify clients */
event Transfer(address indexed from, address indexed to, uint256 value);
/* Initializes contract with initial supply tokens to the creator of the contract */
function MyToken(uint256 _supply, string _name, string _symbol, uint8 _decimals) {
/* if supply not given then generate 1 million of the smallest unit of the token */
if (_supply == 0) _supply = 1000000;
/* Unless you add other functions these variables will never change */
balanceOf[msg.sender] = _supply;
name = _name;
symbol = _symbol;
/* If you want a divisible token then add the amount of decimals the base unit has */
decimals = _decimals;
}
/* Send coins */
function transfer(address _to, uint256 _value) {
/* if the sender doenst have enough balance then stop */
if (balanceOf[msg.sender] < _value) throw;
if (balanceOf[_to] + _value < balanceOf[_to]) throw;
/* Add and subtract new balances */
balanceOf[msg.sender] -= _value;
balanceOf[_to] += _value;
/* Notifiy anyone listening that this transfer took place */
Transfer(msg.sender, _to, _value);
}
}External Links
Related contracts
MyToken
Same deployerAn ethereum.org tutorial token deployed with no name and no symbol, that tracks spending against approvals rather than decrementing them.
0xe4d4e2...b76f1bDecember 22, 2016Pass Dao
Same eraShare ledger and proposal system for a funded working group, priced on a decaying curve.
0x09bc33...9a4acdNovember 24, 2016DoriToken
Same eraA fixed-supply token with transfers and allowance spending, deployed November 2016.
0xdbd90d...c4cb16November 25, 2016"ITT Demo 0.3.6 - Live Chain"
Same eraA fixed-supply token with transfers and third-party allowances, deployed November 2016.
0xb9a357...c293e3November 28, 2016HumanStandartTokenTC
Same eraA fixed-supply token with transfers and third-party allowances, deployed November 2016.
0x7dd73b...715250November 28, 2016INRF Test Tokens
Same eraOwner can mint and freeze, and the version label was renamed from the tutorial default.
0x74f074...abb8beNovember 30, 2016