German global automaker "Porsche" introduces block chaining car by partnering with "Xain" in Berlin.
Details on the technical aspects are not described in detail, but Xain has paper that explained the structure of the block chain.
The core is an etheriam and has a smart contract, but the consensus method is proof of practical kernel work.
In the permitted block chain, whitelist registration of nodes that can participate in the network is required.
Instead of fighting each other to discover the next block, nodes or group nodes are chosen randomly to perform "Proof of Work" calculations.
As a result, "miners" do not need to do some sort of "arms race", such as constructing a huge system with large equipment and only "competition" to complete the calculation of "Proof of Work" It will remain.
Since there is no token in the block chain, this method is used rather than "Proof of Stake", and as the workload increases slightly, the security increases accordingly, so it is preferable to "Proof of Authority" It has been with.
