opcode is a trading application on Ethereum for buying tokenized stocks and ETFs, including individual equities and indices such as the S&P 500. The shares are issued by Ondo, a regulated issuer, and are backed one-to-one by the underlying securities, so each position tracks the real share price. Purchases can be funded with any token or with cash, transactions are gasless, and users retain self-custody whether they sign in with Face ID via an embedded wallet (Privy) or connect their own wallet. Availability depends on the user's jurisdiction.