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With the development trend of aging and low fertility in China, disability and dementia increase year by year in the elderly population. The demand of long-term life care service for the elderly with disability and dementia brings great challenges to the service supply and funds of the traditional endowment insurance model. However, with the application of blockchain technology, the Time Bank's mutual-support old-aged care mode can better solve the above problems. First, the author uses SWOTdoi:10.1051/e3sconf/202125101068 fatcat:xiuonj3o7rafjmfxkvjz66ex2y