Port communicationThe development prospects of blockchain，Where can I register for blockchain? There are many definitions of blockchain.，Everyone has different opinions，The industry has not yet unified。Everyone has his own Hamlet in his heart。So I won’t define it here.。You can also refer to other answers。If you could use one sentence to introduce blockchain technology，That is through the consensus mechanism、Cryptotechnology and distributed multiple ledgers，form a multi-party shared、Untamperable、Information chain and transaction chain with timestamp。
Since the birth of blockchain technology,，Its development can be roughly divided into three stages。 Bitcoin’s underlying technology in the first generation of blockchain technology，Its main function is to solve the problem of multiple trusts with the participation of multiple parties.，This led to the development of decentralization、Self-trusting system solutions，Greatly reduces intermediate transactions and payments
cost
。
From a technical implementation perspective alone，Decentralization is completely possible，This is also the most distinctive feature of the first generation of blockchain technology。Verification machines on the blockchain can be added at will，Unrestricted。And all verification nodes have the same rights，Blockchain achieves equality，All nodes jointly participate in the verification work and receive benefits。 Among the first-generation blockchain technologies, Bitcoin and Ethereum are the most common manifestations of public chains.。
区块链理想的完全去中心化的最终目标是实现绝对的自由以及绝对的隐私。But for now，This is difficult to achieve in the real world，Absolute freedom may not be better than the existing centralized governance，And the national choice may not necessarily be the optimal one.。 However, the first generation of blockchain technology also had obvious flaws in its development.，That's inefficiency。
Take Bitcoin for example，if as payment，That's basically unrealistic，Transactions and payments take at least 10 minutes to initially complete，60minutes for final confirmation，Obviously this doesn't apply in real life。
Therefore, the second generation of blockchain technology has improved in this regard，Changed the consensus mechanism to improve operating efficiency，For example, the nodes that are verified in the DPOS consensus mechanism are all selected.，Therefore, the efficiency can be improved a lot，Transaction payment time can be reduced to seconds。
One of the biggest features of the third generation blockchain technology is that it no longer blindly pursues absolute decentralization.，Choose effective decentralization，That is, the nodes on the blockchain are restricted by the management agency，只有经过授权的合格节点才可以参与验证工作，enjoy the same rights。
We all know that centralization accounts for efficiency
Advantages
，Therefore, the third generation of blockchain technology weighs the proportion of decentralization and centralization.，Make it more efficient、more practical，The main representatives of the third generation blockchain include Ripple、R3，This type is basically based on private chains and alliance chains.。
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