The article outlines the transition from version 0.4 to version 1.0 of the ERC-8004 protocol, which utilizes Ethereum as a coordination layer for autonomous software agents. Key changes include a shift to ERC-721 NFTs for identity registration, making agents' identities transferable and compatible with existing NFT infrastructure. The new identity system allows for a flexible registration interface that includes metadata storage and support for various communication endpoints. This change enhances the ability to query agent metadata on-chain while simplifying the overall architecture. The Reputation Registry has also undergone significant updates. Version 1.0 introduces cryptographic signatures for feedback submission, shifting from a pre-authorization model to requiring signed FeedbackAuth structures. This strengthens security by preventing unauthorized submissions and storing reputation scores on-chain for easier access by smart contracts. Meanwhile, the Validation Registry will be revised in 2026 based on ongoing discussions with the Trusted Execution Environment community, moving from a single-response model to support multiple responses, facilitating more complex validation processes. Migration to version 1.0 is mandatory, as it breaks backward compatibility with version 0.4. All previous registrations, reputation data, and validation records will be cleared, necessitating a complete re-registration of agents. The article includes a detailed checklist for this migration process, emphasizing the need for updated client code and validator integrations. Despite the increased costs associated with feedback and validation due to on-chain storage and signature verification, the new architecture aims for improved efficiency and security.