As we have been mindful that blockchain is decentralized network which is focused mainly on transparency, Blockchain is list of escalating records titled as blocks. Decentralization is highly secured. Since there is no central authority, there is not any central server. Every person's server act as a central server. https://financefeeds.com/moca-foundation-announces-moca-chain-for-self-sovereign-privacy-preserving-identity-and-user-verification/