currency

The currency contract was deployed at block 204787 on September 8, 2015, approximately six weeks after the Ethereum Frontier launch on July 30, 2015. The deployer, whose address is associated with the ENS name collectibletrust.eth, submitted the source code for Etherscan verification. The source code begins with the comment "rfikki was here in 2015," a personal signature embedded in the contract.

The contract implements a token with a fixed supply of one trillion units. It provides functions for sending tokens between accounts, checking balances, and approving delegate transfers. A comment in the disapprove function reads "We Disapprove - 2015 - Aug - 24 Proposed ERC20 Standard - Not Final," indicating the author was implementing an early draft of what would become the ERC-20 token standard. The formal ERC-20 standard (EIP-20) was not submitted until November 19, 2015, more than two months after this contract was deployed.

The function signatures differ from the finalized ERC-20 standard. The contract uses sendCoin instead of transfer, coinBalance instead of balanceOf, and a CoinSent event instead of Transfer. However, the underlying concepts of balance tracking, transfer delegation, and approval mechanisms closely mirror the eventual standard.

This contract represents early community experimentation with token standardization on Ethereum. It was deployed in the window between the Frontier launch and the formal codification of token interfaces, a period when developers were independently exploring fungible token designs before any standard existed.