On July 17, according to the official announcement, Huobi $HTX will open ERA/USDT spot trading and ERA/USDT (10X) isolated margin trading on July 17 at 23:30 (UTC+8). The ERA deposit service will be opened on July 17 at 12:00 (UTC+8), and the withdrawal service will be opened on July 18 at 23:30 (UTC+8). It is reported that Caldera is an Ethereum-based Rollup platform designed to achieve horizontal scaling and interoperability between Rollups. Caldera does not focus on optimizing a single blockchain, but allows project parties to launch customizable Rollups while maintaining the security and decentralization features of Ethereum. The platform introduces Metalayer, a unified layer designed to connect Rollups based on Optimistic and zero-knowledge (ZK) frameworks, thereby enabling coordination, communication, and resource sharing, while retaining the unique characteristics of each Rollup. [TechFlow]