1. Yingfang, Z.: The first ubiquitous power Internet of things industry finance insurance launched, 29 June 2019. https://www.deelplumbing.com/cesa/news/show-745874.html. (in Chinese)
2. Xiaochun, L.: Fit analysis between blockchain technology and the insurance industry. Mod. Bus. 26, 154–156 (2020). (in Chinese)
3. ZA Tech: ZA Tech releases “Annchain Cloud” to build blockchain economic model, 5 May 2017. https://www.zhongan.com/channel/about/1010985.html. (in Chinese)
4. The International Organization for Standardization. Blockchain and distributed ledger technologies — vocabulary: ISO 22739:2020. Blockchain and distributed ledger technologies (2020)
5. Nakamoto, S.: Bitcoin: a peer-to-peer electronic cash system, 31 Oct 2008. https://bitcoin.org/bitcoin.pdf.