Block chain also has randomness!
And many technologies, so as to ensure the safety block chain will be random; random block chain plays an important role in privacy and cryptography technology, randomness can also be used to help a group of people or computers to reach agreement; examples of such random on consensus agreement is ready.
In fact, the random block chain is the use of randomness can build a secure communication channel between two people, it can also be used to confirm the identity of the two sides of the communication; at the same time if there are a lot of people want limited bandwidth communication channels communicate with each other, then random sequence may be used to determine a fair message delivery.
Help block chain is a perfect example of multi-party consensus on a global level, to some extent an update, the update is usually done in accordance with the way round, each round is a periodic discrete time period; the general consensus of the factors that limit throughput the amount.
In fact, the time required throughput certain period of time on the Internet, the upper limit of the number of messages that can be sent via the Internet to send messages and delays; target any block chain consensus agreement are overcome randomness constraints to reach a consensus.
In the public chain, thousands of nodes involved in maintaining the chain block, if each node needs to send a message to all other nodes and waits for a response from all the other nodes, throughput and delay will allow a substantial increase in the cost of consensus. Costly because of the amount of information passed a round too large, so in order to reach a consensus and a way of optimizing network communication program is to reduce the amount of information.
But because of the workload proved very complicated calculation, and only the first person to have the right to solve the problem of accounting, coupled with more than one person to answer difficult questions of probability is very low, the workload proved mechanism limits the network in this way the number of information.