HashKey Cloud, a subsidiary of HashKey Group, has partnered with Tokyo Stock Exchange-listed Quantum Solutions Co., Ltd. to introduce Japan's first DAT Staking collaboration. Announced on November 26, this partnership enables Quantum Solutions to engage in Ethereum (ETH) staking and restaking through HashKey CaaS, a comprehensive service platform. This marks the first instance of a Japanese listed company participating in ETH staking via the DAT framework. The collaboration utilizes HashKey Cloud's institutional-grade staking infrastructure and risk management capabilities to boost asset efficiency and explore opportunities in restaking and DeFi yield aggregation. HashKey Cloud aims to support Japanese firms in exploring innovative Web3 financial models.