The Opium protocol is a universal protocol to create, settle and trade virtually all derivatives and financial instruments in a professional and trustless way. It allows anyone to build custom exchange-traded products on top of the Ethereum blockchain. Once created, they can be traded freely via a network of relayers and will be priced according to supply and demand. The Opium Network is a learning ecosystem that can work with the custom logic of both derivatives and oracles. All created positions are represented by ERC-721o tokens that are specially designed for trading financial instruments and can be combined into portfolios and natively traded in combined orders. At the same time, these tokens are backward compatible with the ERC-721 token standard and can be used in existing ecosystems.