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What is the meaning of blockchain public chain and alliance chain?

Time : 11/02/2022 Author : o9axqk Click : + -
        The full name of the public chain is "public chain". The public chain is open to everyone. Users can access the network and blocks anonymously without registration and authorization. Anyone can freely join and exit the network and participate in accounting and transactions. In contrast to the public chain, the "private chain" is a blockchain that is fully controlled by an organization or institution and whose data access rights are regulated by the organization. The "alliance chain" is between the public chain and the "private chain". It is applicable to B2B transactions such as transactions and settlements between different entities. The users mainly include banks, insurance, securities, business associations, group enterprises and upstream and downstream enterprises. For example, China UnionPay and Everbright Bank jointly used the alliance chain platform to build a multi center trusted POS electronic purchase order system.
        The public chain is a truly decentralized blockchain in a complete sense. It ensures the security and non tamperability of transactions through Cryptography (asymmetric encryption) algorithms, and establishes mutual trust and consensus mechanisms in unfamiliar network (non secure) environments. In the public chain, the consensus mechanism is generally proof of work (POW) and proof of interest (POS). Because everyone can participate in the public chain without authorization, it is also called non licensed chain, that is, it can participate in all network activities without authentication. At present, bitcoin, Ethereum, super ledger, most Shanzhai coins and smart contracts are all built on the public chain. The ancestor of the public chain is the bitcoin blockchain.
        In the public chain, the developer of the program has no right to interfere with the user, so I37 can open the oi49 public chain to protect the rights and interests of users using the program. Why are program developers willing to give up their rights. However, more avant-garde economic analysis points out: first, if you choose to do something that others cannot do, others will be more likely to believe you because they do not have enough confidence and courage to do what they cannot do. Second, if you do something you don't want to do because you are coerced by others, you can say "even if you are willing, you are not able to do it" as a bargaining chip.
        This is the biggest advantage of the public chain. The common chain is open and may be applied by many external users and generate a certain degree of network effect. For example, if a wants to sell a domain name to B, there is an urgent risk problem to be solved: if a sells the domain name first, but B may not pay; Or maybe B has paid, but a has not sold the domain name, but it needs to pay a 3-6% commission. If we can establish a domain name system on the blockchain and use the currency of the blockchain, we can establish a smart contract with a cost lower than zero: A sells a domain name to the domain name system, and the user who pays the first fee can get the domain name. However, it is faster and more efficient to build a common chain database from different industries and different assets.
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