1. Jiang, Q.: Current situation and future development of institutional pensions in my country. Coop. Econ. Technol. (16), 3 (2021)
2. Boc’s “time bank” public welfare mutual aid platform to explore the development of time bank with Chinese characteristics. Chin. Civil Aff. (2), 1 (2022)
3. Chuangchuang, Luan, H., Yang, X., Guo, X., Lu, Z., Niu, B.: Overview of blockchain technology research. Comput. Sci. 48(S02), 9 (2021)
4. Cai, X., et al.: The principle of blockchain and its core technology. Chin. J. Comput. 44(1), 48 (2021)
5. Shen, M., Zhang, H.: Overview of blockchain technology research. Wirel. Internet Technol. 17(10), 3 (2020)