(1) See
OpenAI Codex.
(2) A protocol for storing the provenance of art or another collectible on the Ethereum blockchain. The Codex viewer lets people register an art object as well as review past and current ownership. CodexCoin (CODX) is the Codex token used to create and modify Codex records. Web3 wallet users do not pay CODX fees. See
Ethereum,
crypto glossary and
Web3 wallet.