ソース:[1] Recall: The Onchain Arena for AI Agents (https://4pillars.io/en/articles/recall-the-on ...)[2] Four Pillars: AI agent platform Recall could evolve into a search engine - CoinNess (https://vertexaisearch.cloud.google.com/groun ...)[3] Decentralized AI Agents - SingularityNET (https://www.singularitynet.io/solutions/decen ...)