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This article mainly introduces "what is the role brought by blockchain nodes". In daily operation, I believe many people have doubts about what the role of blockchain nodes is. Xiaobian consulted all kinds of materials and sorted out simple and easy operation methods. I hope it will help you answer the doubts about "what is the role brought by blockchain nodes"! Next, please follow the small series to learn together!

It is a fact that blockchain is very hot, but there are few people who really understand blockchain in depth, so before we choose to join blockchain-related industries, we should understand some concepts in blockchain, so that we can fully grasp the characteristics of blockchain. At present, many countries are trying to apply blockchain technology to various fields, and the future of blockchain is bright.

It can be said that nodes constitute a blockchain. There are countless nodes in the whole network, which can be any form of server in the blockchain network, and behind each node can be a person or a multi-person cooperation. For example, in the Bitcoin network, it is a public chain. When we run bitcoind on our own computer connected to the Internet, the computer also becomes a node in the Bitcoin network.

The terminal responsible for maintaining the network operation can be called--node

In the Internet domain, all data operations of enterprises are concentrated in their own servers, so this server is a node.

For example, WeChat, which we use, handles so many chat messages, transfers, etc. every day. The data is stored and run on Tencent's servers. Then this server that processes data, we can call it a node.

Back in the world of blockchain, we all know that blockchain is a decentralized distributed database. It does not rely on any centralized server, but consists of thousands of "small servers."

As soon as we download a blockchain client, we become one of those thousands of "small servers."

We are a node ourselves.

Nodes are divided into "full nodes" and "light nodes." Full nodes are nodes that have all transaction data of the whole network, so light nodes are nodes that only have transaction data related to themselves.

The more nodes are distributed, the more decentralized the blockchain network is, and the more secure and stable the network operation is. Bitcoin, for example, currently has about 9700 nodes, more than 20% of which are distributed in the United States. China accounts for about 5% of all nodes

The more nodes there are, the more secure the Bitcoin network is.

Blockchain is composed of small blocks. Everyone who forms a block node does not know each other, but they trust each other because they also have a common purpose, that is, they all want to get the reward of the mechanism. So we calculate, competitors dig, prove to each other, and broadcast the news; or chat in the community, talk about personal feelings, propose improvement ideas, etc., so that we are all creating value, and there is no waste of resources.

Bitcoin is designed as a decentralized peer-to-peer (P2P) network

For example, centralized applications are centrally managed by a single server, while decentralized applications are managed by many servers to store information and authenticate each other.

In summary, the server in the decentralized application is the node

Role of nodes

In order to confirm the validity of a transaction, Bitcoin requires more than one miner in a separate network to process the transaction sheet, which must be broadcast to the network through "nodes." This is the first step in the transaction processing process (blockchain validation).

To fully exploit the potential of the network, the Bitcoin network must not only provide a channel for transactions, but also ensure security. Using randomly selected nodes, the network reduces the double-spend problem-the likelihood that users will try to spend the same digital currency twice.

Bitcoin, however, requires more than nodes. It requires a lot of fully functioning nodes-nodes that carry both the Bitcoin core client and the full blockchain on a single machine entity. The more nodes, the more secure the network.

For example, each node is equivalent to a server. In this P2P network, the message must be disseminated and finally recorded and stored by most servers before it can be confirmed.

At this point, the study of "what is the role of blockchain nodes" is over, hoping to solve everyone's doubts. Theory and practice can better match to help everyone learn, go and try it! If you want to continue learning more relevant knowledge, please continue to pay attention to the website, Xiaobian will continue to strive to bring more practical articles for everyone!

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