Full record of blockchain transactions

A. Does the bitcoin blockchain have a blockchain for 1 bitcoin? Does each node have complete blockchain data?

The bitcoin blockchain is 1 bit Does a coin have a blockchain? No, the block saves the transaction. In the early stage, if you successfully build a block, you will get a coin, and in the later stage, you can only get the fee paid by the exchange. A coin is a string of digital signatures, the digital signature sent by the last owner to the recipient, and everyone can see from the transaction who owns the coin.
Does each node have complete blockchain data? By node do you mean a user node? A user node needs to keep a copy of the block header of the longest proof-of-work chain, so those who know the data of all block headers can move forward to know all the data on the blockchain, but not all of them are saved. A block header is as small as 80 bytes, which can be completely preserved because the generation of nodes is very slow. Even with the passage of time, the amount is not too large.

B. What is the best example of the transaction process of the blockchain

1. Definition

The blockchain is like an open online ledger. It originated from Bitcoin and is the underlying technology of Bitcoin. In a Bitcoin transaction, all the information recorded in the transaction will be packaged into a “block” for storage. With the expansion of information exchange, blocks are linked to each other, forming a blockchain.

II. Features

The digital currency represented by Bitcoin is a peer-to-peer electronic cash system. Among them, each transaction is broadcast to all participants in the network, and is recorded in the ledger after multiple confirmations. This ledger is the “blockchain”. Each participant will have its own ledger. In this way, when false information occurs, it can be eliminated through mutual verification, thereby ensuring network security.

In the blockchain, every node is equal, and there is no centralized management organization. This “decentralization” feature makes the blockchain do not need to rely on third parties, and its operation is not Requires any human intervention to be able to independently verify itself. In addition, the blockchain network is open to the world, and anyone can query data through the open port, so the entire system is highly transparent.

III. Application

In short, the blockchain is a trusted database and a reliable “ledger”. In the future, it will be applied in cross-border payment, securities, loans, voting, etc. For example, in cross-border payment, with the security provided by the blockchain, it is possible to send money to the world anytime, anywhere, which saves many intermediate links and high handling fees.

C. How to transfer funds in the blockchain and cannot find records

Check whether the network is stable.
Public Block Chains refers to: any individual or group in the world can send transactions, and the transactions can be effectively confirmed by the blockchain, and anyone can participate in its consensus process. The public blockchain is the earliest blockchain and the most widely used blockchain. The virtual digital currencies of the major bitcoins series are all based on the public blockchain. There is only one blockchain corresponding to this currency in the world. .

D. What bitcoin block browser can see all transaction records

This has nothing to do with the browser, this needs to go to a professional website to check, you can find it of. Because Bitcoin transactions are recorded on the blockchain, there is no way to modify or delete them. However, Google Chrome is generally used.
Bitcoin, Ritecoin, Litecoin, Dogecoin and other digital currencies utilize blockchain technology.

E. Can future assets use blockchain to record every registration and transaction?

Yes. The feature of blockchain technology is that it creates a more reliable trust mechanism through decentralization, and it has the characteristics of traceability and non-tampering. Therefore, blockchain has a great use in the field of asset confirmation and circulation. . Since its establishment, the SharesChain team has always insisted that blockchain technology should be integrated with the real economy, and has been creating an innovative ecological network that provides a complete solution for the on-chain, registration, management and circulation of real assets on the blockchain. plan.

F. What are the blockchain trading platforms?

There are still many blockchain trading platforms, such as Binance, Huobi, ok, etc., all of which are relatively large platform.
Blockchain is the core supporting technology of the digital cryptocurrency system represented by Bitcoin. The core advantage of blockchain technology is decentralization. It can realize point-to-point transactions based on decentralized credit in a distributed system where nodes do not need to trust each other by using data encryption, timestamps, distributed consensus and economic incentives. Coordination and collaboration to solve the ubiquitousIssues such as cost, inefficiency, and insecure data storage provide solutions.
The application fields of blockchain include digital currency, token, finance, anti-counterfeiting traceability, privacy protection, supply chain, entertainment, etc. With the popularity of blockchain and Bitcoin, many related top domain names have been registered , had a relatively large impact on the domain name industry.

G. Where to find the blockchain transaction id

Here we use the wallet of the Ethereum blockchain as an example, the little fox is an encrypted wallet, and the one that enters the blockchain APP entrance and exit. After entering, obtain the wallet address, and then use the searcher of the Ethereum blockchain to enter the homepage of the Etherscan official website, you can obtain the following blockchain transaction id information:
1. The latest block
2. The latest Transactions that occurred
Extended information:
The transaction process of the blockchain may seem mysterious and cumbersome, but it is not necessarily that difficult to say.
Step 1: Owner A uses his private key to sign a digital signature for the previous transaction (source of bitcoin) and the next owner B, and appends the signature to the end of the currency to create a transaction slip. At this time, B uses the public key as the recipient’s address.
Step 2: A broadcasts the transaction order to the entire network, the bitcoin is sent to B, and each node will receive the transaction information into a block
At this point, for B, the Bitcoins will appear in the Bitcoin wallet instantly, but will not be available until the block is confirmed. At present, a bitcoin is successfully confirmed from payment to final confirmation, and it can only be confirmed after 6 blocks of confirmation.
Step 3: Each node obtains the right to create a new block by solving a mathematical problem, and strives for bitcoin rewards (new bitcoins will be generated in the process)
At this time, the node repeats Try to find a value, so that after the value, the hash value of the last block in the blockchain and the three parts of the transaction order are sent to the SHA256 algorithm, the hash value X (256 bits) can be calculated to meet certain conditions (such as the first 20 digits) are all 0), that is, to find the solution to the mathematical problem.
Step 4: When a node finds a solution, it broadcasts all timestamped transactions recorded in the block to the whole country, and is checked by other nodes in the entire network.
At this time, the timestamp is used to confirm that a specific block must exist at a specific time. The Bitcoin network obtains the time from more than 5 nodes, and then takes the intermediate value to become the timestamp.
Step 5: Other nodes in the entire network check the correctness of the block accounting. If there is no error, they will compete for the next block after the legal block, thus forming a legal accounting blockchain.

H. It is said that the blockchain is a large ledger, where is its information recorded?

The blockchain is the large ledger of the Bitcoin network, and each block is quite on a page in the ledger. At present, each block of Bitcoin mainly records data such as block header, transaction details, transaction counter and block size. The “block header” contains all information except transaction information, mainly including the hash value of the previous block header: used to guarantee the block.

I. What information does the blockchain record

The blockchain is a large distributed ledger, and each block is equivalent to a page in the ledger.
At present, the block of the blockchain mainly records data such as block header, transaction details, transaction counter and block size. : The block header is the first 80 bytes of the block. The data inside the block is as follows: 1. Transaction details: The sender and receiver of each transaction, the amount and the digital signature of the sender are recorded in detail. The main content in each block; 2. Transaction counter: This records the number of transactions that occurred in each block; 3. Block size: Indicates the size of each block data, … If you want to learn more about For knowledge of these aspects, I suggest you go to Guangzhou Xuanling Network to learn, I can give you a very detailed introduction, and ask professional people for professional matters! That’s right, I hope it helps you!

J. The blockchain is equivalent to a transaction record. How can everyone remember it? Every new block will create a problem and why?

I will explain it with the Bitcoin network:

  1. After a node generates a transaction, it will broadcast the transaction. Each node will collect transaction information on the network, and after a certain amount, these transactions will be packaged into a block.

  2. The Bitcoin network has designed a proof-of-work mechanism. A mathematical problem is designed (the hash value is calculated violently, so that the calculated hash value meets a certain difficulty, which is actually the calculation of a field value nonce in the block header). The first calculated node broadcasts the block, and other networks The nodes in verifying that this block is satisfied is the answer to this conundrum. If so, add this node to the end of your own blockchain.

By broadcasting, let everyone take note. So�� If you download bitcore’s bitcoin client and become a node of the bitcoin network, it will initially let you synchronize 120G (current) bitcoin block information.

The generation of each new block is performed by miners through a large number of mathematical operations, so that the calculated mathematical results meet a certain mathematical difficulty. Therefore, Bitcoin network mining is for the continuous chaining of blocks. Mining reward Bitcoin is an incentive mechanism that motivates miners to mine.

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