ERC-8004 has officially crossed the chasm from testnet to functioning multichain infrastructure. 🛡️ I've put up a high-density summary of the structural progress reported by @DavideCrapis, @marco_derossi, and @yq_acc: 1. Cross-chain Standard (Singleton L2 Rollout) The registry is no longer siloed on mainnet. Singleton contracts are now live on @arbitrum, @Celo, and @taikoxyz. For the first time, an agent’s reputation and proof-of-work are truly portable across the entire @ethereum ecosystem. 2. The Discovery Breakthrough (Semantic Search) Foundational upgrade to the search protocol: searchAgents() now supports Semantic Search. This allows developers to query agents based on complex human-like capabilities rather than just static labels. It’s the starting gun for the verifiable agentic marketplace. 3. Technical Validation (MetaMask Collaboration) The team released the "protocol agent" paper in collaboration with @MetaMask. It establishes a benchmark for how agents can autonomously verify and execute cryptographic protocols—an essential step for non-human labor reliability. Summary: We are building the Source of Truth for the machine economy. In 2026, trust is the only moat that can't be commoditized. 📈 Full timeline and latest signals in the mapping below. 👇 cc: @DavideCrapis @marco_derossi @yq_acc @13yearoldvc @questflow @agent0lab(Jiawei)