Ethereum Smart Contracts Expose $4 Million to Theft
Thirty-four thousand two hundred active Ethereum smart contracts hold 4.4 million dollars in ether and contain code defects that allow theft. Five researchers from University College London and the National University of Singapore classified the defective contracts into three groups. Greedy contracts freeze balances forever. Prodigal contracts send ether to any caller. Suicidal contracts accept […]
ERC-20 Tokens on the Ethereum Network
ERC-20 denotes the technical specification that governs every fungible token issued on the Ethereum blockchain. A token qualifies as fungible when any single unit substitutes for another unit of the same type. By contrast, the ERC-721 specification produces non fungible tokens that never trade one-for-one. The specification equips developers with a uniform set of smart […]