Blockchain technology realizes decentralized security and trust in many ways

　　Blockchain technology realizes decentralized security and trust in many ways. First, new blocks are always stored linearly in chronological order.Down-to-earth right Bclub In-depth research is the only way to pursue development. https://www.bclubtk.us/

　　

　　In other words, they are always added to the “end” of the blockchain. After adding a block to the end of the blockchain, it is extremely difficult to go back and change the content of the block unless most networks have reached a consensus. That’s because each block contains its own hash value, as well as the hash value of the block before it and the timestamp mentioned above. Hash codes are created by a mathematical function that converts digital information into a series of numbers and letters. If you edit this information in any way, the hash code will also change.

　　

　　Suppose a hacker also runs a node on the blockchain network, and he wants to change the blockchain and steal cryptocurrency from others. If they want to change their single copy, it will no longer be consistent with others’ copies. When others compare their copies with each other, they will see that this copy stands out, and the hacker’s chain version will be considered illegal and discarded. In order to successfully carry out such hacking attacks, hackers need to control and change 51% or more copies of blockchain at the same time, so that their new copies become the majority copies and thus become the agreed chain.

　　

　　Such attacks also need a lot of money and resources, because they need to redo all the blocks, because they now have different time stamps and hash codes. Due to the scale and growth rate of many cryptocurrency networks, the cost of realizing this feat may be insurmountable. Not only will it be very expensive, but it may be fruitless. Doing such a thing will not be ignored, because network members will see such drastic changes in the blockchain. Then, the network members will hard fork to the new version of the unaffected chain.

　　

　　This will cause the value of the attacked version of the token to plummet, making the attack meaningless because the bad guys control the worthless assets. The same thing will happen if the bad guys try to attack the new fork of Bitcoin. It is built in this way, so it is more economical to participate in the network than to attack it.