区块链信息查询,区块链查询系统

1. Where to query Ethereum transaction records

It has its own browser, both Ethereum and Ethereum use one, and tokens developed based on Ethereum You can also query it on the Ethereum blockchain browser, and USDT on the Bitcoin blockchain browser.
On non-small accounts, you can view the Ethereum market, but you cannot trade. If you want to invest, you can go to a digital currency exchange. Currently, the mainstream digital currency exchanges on the market include Binance, Huobi.com, Bitnet, etc. Here we use the Ethereum blockchain wallet as an example. Little Fox is an encrypted wallet and the entrance and exit to the blockchain APP. After entering, obtain the wallet address, and then use the Ethereum blockchain searcher to enter the homepage of the Etherscan official website. You can obtain the following blockchain transaction ID information:
Owner A uses his private key to verify the previous transaction ( Bitcoin source) and the next owner B sign a digital signature, and append this signature to the end of the currency to create a transaction slip. At this time, B uses the public key as the recipient address. A broadcasts the transaction order to the entire network, and the Bitcoin is sent to B. Each node will receive the transaction information and include it in a block. For B, the Bitcoin will be immediately displayed in the Bitcoin wallet, but It cannot be used until the block is confirmed successfully. At present, a Bitcoin can only be truly confirmed after being confirmed by 6 blocks from payment to final confirmation. Each node obtains the right to create a new block by solving a mathematical puzzle and strives to be rewarded with Bitcoins (new Bitcoins will be generated in the process).

2. Can the blockchain address be queried?

It can be viewed with a blockchain browser.
If the address you entered is incomplete, please enter the wallet address you want to query in the search input box. However, after this address has previously conducted ETH transactions or queries on the blockchain, the input box will automatically fill in the address you query. address.
Click Query and all information about the wallet address will appear.
Click on the transaction hash to also see the details of the transaction.
The principle of querying the blockchain browser:
Because the transaction information and other data in the blockchain are open and transparent, the blockchain browser is the address for querying the blockchain transaction records, and users can use It looks at its own transaction information and other information stored on the blockchain.
Most of them can be checked, which is a major feature of the openness and transparency of the blockchain. The address is transparent. As long as there is an address, you can query the transfer.

3. How to query blockchain coins on Ethereum

You can directly query by entering information such as wallet address, transaction ID, block hash or block height. ,Very convenient.
If you are querying account balance, historical transaction data of the account and other information, it is recommended to directly enter the wallet address to query; if you are querying relevant information of a certain transfer, such as whether it has been received and how the progress is, it is most convenient to enter the transaction ID.
Of course, the blockchain browser does notYou can only query your own account, but you can also query other people's accounts and related transaction information, including the account of Bitcoin founder Satoshi Nakamoto.

4. How to query and search blockchain data

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. . The so-called consensus mechanism is a mathematical algorithm in the blockchain system that enables different nodes to establish trust and obtain rights and interests.

In a narrow sense, blockchain is a chain data structure that combines data blocks in a sequential manner in chronological order, and is cryptographically guaranteed to be non-tamperable and non-tamperable. Unforgeable distributed ledger.

Broadly speaking, blockchain technology uses block chain data structures to verify and store data, uses distributed node consensus algorithms to generate and update data, and uses cryptography to ensure data mastery. Security of transmission and access, a new distributed infrastructure and computing paradigm that utilizes smart contracts composed of automated script code to program and manipulate data.

Generally speaking, the blockchain system consists of the data layer, network layer, consensus allocation layer, incentive layer, contract layer and application layer working together to complete the query and search of data.

5. How to verify and query the blockchain evidence data through micro-copyright

Using the registration number on the evidence collection certificate, you can also directly verify it with Yibaoquan, the notary office and the arbitration committee. The official website conducts blockchain queries, including preservation subjects, preservation timestamps, Guangzhou Internet Court evidence numbers, blockchain hash values ​​and other related information to ensure the openness, transparency and traceability of blockchain evidence data.

Arbitration Commission official website verification

6. What should I do if the blockchain electronic invoice cannot be verified

Blockchain electronic invoice verification The method for not coming out is as follows:
1. Pass the inspection on the official website of the Shenzhen Taxation Bureau of the State Administration of Taxation.
2. Check on the WeChat official account.
3. After entering the public inquiry tax guide interface, click the [Blockchain Invoice Inquiry] button to enter the blockchain invoice inquiry interface.

7. How is xem new economic currency? Detailed introduction of There are many currencies in the currency, Bitcoin is one of them, and there is also XEM currency. Many people do not understand this currency. Let’s take a look with the editor. I hope it can help you.
How about xem New Economic Coin
New Economic Movement (NewEconomyMovement, abbreviated as NEM) is a peer-to-peer virtual currency. Released in early 2015, its source code is written in Java and is 100% original. NEM is widely released among the crowd, and its blockchain adopts a newly invented synchronization solution based on Proof of Importance POI. NEM features also include: CompletePoint-to-point security system encrypted information system and reputation system based on Eigentrust++ algorithm.
The founder of XEM was established by a mysterious person from the Bitcointalk.org forum named Utopianfuture. It is reported that he initially only wanted to build a copy of the second-generation digital currency NXT (Future Coin), but he later realized that the distribution model of NXT was not It makes sense, so I devoted myself to XEM, which has an egalitarian distribution method.
Under the leadership of Utopianfuture, more and more developers participated in this project. However, when the project was in full swing, the founder Utopianfuture suddenly withdrew.
Before Utopianfuture left, he handed over his NEM-related affairs, powers and responsibilities to other core development team members. The entire team was taken aback, but returned to normal after a short time.
Some people may be surprised why "the dispersion of the tree" did not happen. This is because XEM's inherently decentralized framework can withstand the test of drastic changes, just like Bitcoin. Even though Satoshi Nakamoto left the project, The entire system can still operate normally.
NEM adopts a unique consensus mechanism called POI (proofofimportance). Before the birth of NEM, the POW mechanism represented by Bitcoin and the POS mechanism represented by Future Coin had appeared on the market. However, these two In fact, one problem that cannot be avoided by any of these mechanisms is that the rich get richer.
For example, in the POW mechanism, if you are rich, then you can buy more ASIC mining machines, so you can mine more Bitcoins, you will be richer, and then buy more ASIC mining machines, and even establish ASIC cluster mining. It is worth mentioning that this situation is even more obvious in the POS mechanism. The more coins you hold, the greater your chance of obtaining accounting keys, and the greater the returns. Therefore, these two The mechanism is that the rich get richer.
PoI, like a reputation scoring system, every account on the NEM blockchain is assigned an importance score. This score will affect how individual users explain the "harvest" blockchain (accounting to obtain token rewards). As the user's importance score becomes higher and higher, their chances of obtaining accounting rewards are greater. A higher credit score means that As the network trusts you more, it will allow you to verify more transactions and obtain more transaction fees. In other words, win more accounting opportunities.
At the beginning of this year, the Japanese exchange Coincheck was hacked and 540 million XEM was stolen. This incident was the largest coin theft incident since the birth of NEM. This incident directly caused the exchange to suspend all services. Since this incident, the market value of NEM has begun to decline, from fifth to fifth. The name has dropped all the way to the 16th place in market capitalization.
But it is undeniable that NEM has its own unique thinking and innovation based on previous projects, and NEM is committed to creating aThe ideal of a community where everyone can communicate equally is very beautiful. For example, NEM has been equally distributed among more than 1,500 interest groups from the beginning.
At the beginning if you want to join NEM, you can pay a small nominal fee. Now, you can do some promotional work for NEM, such as writing an article introducing NEM online to earn NEM coins. Therefore, having money is not the only way to join NEM. They are willing to provide an equal opportunity to more people.
New Economic Coin is an old currency that has been used for peer-to-peer transactions for 15 years. The total amount is 9 billion. It has no stains so far. The name is a bit Japanese and the code is original. New Economic Coin is my first entry into the currency circle and the first to include it in my own currency It is a type of pool. I am a technically blind person. The first step to choose a currency is to look at the introduction of the currency. The second step is to look at the number of currency holders. The third step is to look at the team's promotion ability. The fourth step is to look at the white paper that I can't understand anyway. Pitianshu. Finally, I use funds to test the market response. I will hold heavy positions on coins that meet my cognition. The NEM currently feels a bit like a regional currency to me. I personally feel that there will be restrictions on the future space in the draft, but the times Data shows that the per capita market capitalization of NEM currency holders has always been among the best, and its popularity is very high.

8. Where to check the blockchain transaction ID

Here we use the wallet of the Ethereum blockchain as an example. The little fox is an encrypted wallet and enters the block The entrance and exit of the chain APP. After entering, obtain the wallet address, and then use the Ethereum blockchain searcher 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 in fact it is not necessarily that difficult to actually talk about it.
Step 1: Owner A uses his private key to sign a digital signature on the previous transaction (bitcoin source) and the next owner B, and appends this signature to the end of the currency to create Transaction order. At this time, B uses the public key as the recipient address.
Step 2: A broadcasts the transaction order to the entire network, and the Bitcoin is sent to B. Each node will receive the transaction information and include it in a block
At this time, for B, the Bitcoins will appear in your Bitcoin wallet immediately, but cannot be used until the block is confirmed. At present, a Bitcoin can only be truly confirmed after being confirmed by 6 blocks from payment to final confirmation.
The third step: Each node obtains the right to create a new block by solving a mathematical problem, and strives to be rewarded with Bitcoins (new Bitcoins will be generated in the process)
At this time, the nodes repeat Try to find a value so that after feeding the three parts of the value, the Hash value of the last block in the blockchain, and the transaction order into the SHA256 algorithm, the hash value are all 0), that is, the solution to the mathematical problem is found.
Step 4: When a node finds a solutionAt that time, it broadcasts all timestamped transactions recorded in the block to the whole country, and is verified by other nodes in the entire network.
At this time, the timestamp is used to prove that a specific block must indeed exist at a specific time. The Bitcoin network obtains the time from more than 5 nodes, and then takes the middle value to become a timestamp.
Step 5: Other nodes in the entire network check the correctness of the accounting of the block. If there are no errors, they will compete for the next block after the legal block, thus forming a legal accounting blockchain.