A lot of people are talking about blockchain right now. What exactly is blockchain? 10

From an academic point of view, blockchain is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Blockchain is essentially a decentralized database.

For example, if you are a woman, every time your boyfriend says something to you or promises to buy you something, you immediately record it and send it to all your girlfriends, classmates, colleagues, and various groups and friends, so that he can no longer deny it, which is called blockchain.

The core advantage of blockchain technology is decentralization, which can realize peer-to-peer transactions, coordination and collaboration based on decentralized credit in a distributed system where nodes do not need to trust each other through the use of data encryption, timestamping, distributed consensus and economic incentives, thus providing a solution to the problems of high cost, low efficiency and insecure data storage that are common in centralized institutions.

The application fields of blockchain include digital currency, tokens, finance, anti-counterfeiting traceability, privacy protection, ** chain, entertainment, etc., the popularity of blockchain and bitcoin, many related top domain names have been registered, which has had a relatively large impact on the domain name industry.

Blockchain is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Blockchain is an important concept of Bitcoin, which is essentially a decentralized database, and as the underlying technology of Bitcoin, it is a string of data blocks associated with cryptographic methods, and each data block contains the information of a batch of Bitcoin network transactions, which is used to verify the validity of its information (anti-counterfeiting) and generate the next block.

Blockchain is essentially a decentralized database, a distributed ledger that is cryptographically guaranteed to be immutable and unforgeable. Blockchain decentralization literally means to remove the "center", the blockchain does not have the so-called official, or third party to manage it, the blockchain makes the power that originally belonged to the centralized role decentralized, and users can freely conduct peer-to-peer transactions between them. Mimacaijing focuses on blockchain information.

Blockchain is the underlying technology of Bitcoin, which is like a ledger that records all transactions. It has decentralization, what is decentralization, for example, you buy something on **, place an order to pay Alipay, and when you receive the goods, Alipay will send the money to the seller. Alipay is the third party of that center.

Without it, it is decentralization, just like buying things offline, paying with one hand and taking the goods with the other, then there is no third party.

The blockchain itself is a string of cryptographically associated blocks of data.

Look closely to see if it looks like a ledger. Piece by piece is a block, and together it is a blockchain.

Many incomprehensible terms, such as distributed database storage, peer-to-peer communication, consensus mechanism algorithms, etc., are the basis for the realization of the blockchain and are the business of the gods.

Decentralization is the purpose of blockchain to solve the trust problem, which means that understanding what decentralization is is the key.

For many years, the problem of trust can only be solved by relying on one center, such as the bank in the lending relationship, as a large center to record the direction of each money (purely from this point of view, the bank is equivalent to a third-party certifier or a large ledger), which has certain risks and costs.

Blockchain is decentralized, so that everyone does not need a bank to keep accounts in a unified manner, it uses the method of mutual supervision by everyone, so that everyone can keep accounts with each other, regardless of whether you are involved in the transaction or not. From the original bank as a unified large ledger, everyone is an infinite number of small ledgers, and at the same time, according to the principle of the minority obeying the majority, the cost of tampering has been greatly increased.

Then, on the basis of blockchain, we don't have a center, and we can solve the trust problem by relying on countless small nodes.

There is a huge space for imagination here, and of course, what can be done, countless blockchain teams have fully exerted their imagination.

Blockchain is a special type of network ledger. At the heart of blockchain technology is digital encryption. As early as 1991, a group of young people invented a new set of encryption technology to verify each other in order to prevent the date of electronic documents from being tampered with.

The unit of data stored in the blockchain is blocks, and each block is queued strictly in order, forming a "chain" with a bang. If someone wants to change the content of a block, the unique characteristics of the block will also change, and the subsequent blocks will immediately reject it.