区块链里面可以存什么数据,区块链里面可以存什么东西呢

区块链可以存储多种类型的数据，主要有以下三种：货币数据、身份数据和智能合约数据。

货币数据：区块链作为一种分布式账本，可以存储货币类型的数据，比如比特币、以太坊等加密货币的数据。它们是在区块链上进行记账，记录货币的流动情况，以及每一笔交易的参与者。

身份数据：区块链的另一个重要功能是存储身份数据。通过数字签名，区块链可以记录用户的身份信息，比如账号、密码、身份证号码、银行卡号等。这些数据可以在区块链上安全存储，可以有效防止数据泄露。

智能合约数据：智能合约是一种特殊的计算机程序，它可以在区块链上运行，实现自动执行合同，存储和处理各种数据。智能合约可以记录任何类型的数据，比如财务数据、物流数据、商业数据等，它们可以被安全地存储在区块链上，以便全球用户访问和使用。

总之，区块链可以存储货币数据、身份数据和智能合约数据，这些数据都可以在区块链上安全存储，以便用户访问和使用。

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① How to store blockchain transaction information

Blockchain is a large distributed ledger. If detailed data is to be stored on the longest chain, through Hash is used to verify data. Only data verified by most nodes can be saved on the longest chain. The latest data can be synchronized between nodes, while achieving distributed storage of data and making it difficult to tamper. Each transaction corresponds to a timestamp, and the status of each transaction can be queried based on the timestamp, which is traceability.

② What can blockchain do?

Blockchain technology has huge potential, and many investors are interested in what entrepreneurs can do with this technology. What can blockchain do? ?

Building a Digital Identity

Like our guide, how do blockchain skills work? The discussion is like this. The signature component of blockchain skills is completed using keys. Combining the public key and the private key can be referenced based on the strong digital identity possessed.

How the public key is identified in the crowd ( (e.g. email address), private keys are a way to express consent for digital interactions. Cryptography is an important force behind blockchain innovation.

As a system of record

Our guide What is Distributed ledger? .Blockchain is an innovation in information registration and distribution. It is suitable for recording static data (registry) and dynamic data (transactions), evolving the recording system.

In the registry, data can be passed through three Any combination of methods is stored in the blockchain:

Unencrypted data – readable by every blockchain participant in the blockchain with full transparency.

Encrypted data – —Participants and decryption keys are read. The key can access the data of the blockchain, proving who added the data and the time of the data.

③ What are the applications of the blockchain industry

< p> Taking the tourism industry as an example, blockchain applications are mainly focused on travel, travel community reviews, digital identity management, credit consumption management, tracking pilots’ professional certificates and qualifications, hotel and airline loyalty programs, reservation management, Several application areas include consumption points management. In addition, with the development of blockchain, many related top domain names have been registered, which has had a relatively large impact on the domain name industry. In addition, blockchain also has applications in finance, games, entertainment and other fields.

④ Components of Blockchain

The components of Blockchain are as follows:

Openness: Blockchain The system data is open and transparent, and everyone can participate. For example, when renting a house, you can know the previous rental information of the house and whether there have been any problems. Of course, some personal private information is encrypted.

Autonomy: The blockchain adopts consensus-based specifications and protocols (such as a set of open and transparent algorithms), and then each node operates according to this specification, so that everything is completed by machines , there is no human element. Changing trust in people to trust in machines,No human intervention will work.

The information cannot be tampered with: If the information is stored in the blockchain, it will be saved permanently and there is no way to change it. As for the 51% attack, it is basically impossible to achieve.

Anonymity: There is no personal information on the blockchain, because it is all encrypted and is a string of letters and numbers, so your various ID card information and phone number will not appear. Numbers are being resold.

⑤ What is the concept of blockchain

Literally understood, blockchain includes two concepts: block and chain. The blockchain itself is composed of blocks, and the network built by linking different nodes together is the blockchain. The main function of the blockchain is to store information. Any information that needs to be saved can be written to the blockchain or read from it.

Each block stores: some valid record or transaction; information involving the block; links to the previous block and the next block through the hash of each block - which can be considered a block The unique code of the fingerprint.

Each block therefore has a specific and immovable position within the chain, as each block contains information from the hash of the previous block. The entire chain is stored in every network node that makes up the blockchain, so an exact copy of the chain is stored among all network participants.

Uses

Essentially, blockchain can be used to store any type of information that must remain intact and be more secure than going through a middleman. , decentralized and cheaper ways remain available. Additionally, since the stored information is encrypted, its confidentiality is guaranteed as only those with the encryption key can access it.

Using blockchain in healthcare. For example, health records can be consolidated and stored on the blockchain. This means that every patient's medical history is secure and, at the same time, available to every authorized doctor, regardless of the health center where the patient received treatment. Even the pharmaceutical industry could use this technology to authenticate medicines and prevent counterfeiting.

Blockchain is also very useful for managing digital assets and documents. The problem with digitization so far has been that everything is easily copied, but Blockchain allows you to record purchases, deeds, documents or any other type of online asset without it being counterfeited.