Ethereum block browser query move brick record
Publish: 2021-04-27 22:19:11
1.
transactions.forEach(function(tx){
vartxInfo=web3.eth.getTransaction(tx.transactionHash);
/ / at this time, the transaction information txinfo can be stored in the database
})< br />});
If you want to query the transaction records on the main network, you can use Etherscan. However, if you build your own private chain, how should you query the transaction records
the answer is that you need to listen to the logs on the chain, save them in the database, and then query them in the database. For example:
< pre t = "code" L = "Java" > varaddr = & quot& quot;< br />varfilter=web3.eth.filter({fromB lock:0 ,toBlock:' latest', address:addr });< br />filter.get(function(err,transactions){transactions.forEach(function(tx){
vartxInfo=web3.eth.getTransaction(tx.transactionHash);
/ / at this time, the transaction information txinfo can be stored in the database
})< br />});
Web3. Eth. Filter() is used to monitor the log on the chain, and Web3. Eth. Gettransaction() is used to extract the information of the specified transaction. Once the transaction information is obtained, it can be stored in the database for query
recommend a practical introction, you can see: Ethereum tutorial
2. Just focus:
you can't retrieve your assets through Ethereum block query
think too much
if you want to check the real estate,
you can go to the real estate transaction registration center.
you can't retrieve your assets through Ethereum block query
think too much
if you want to check the real estate,
you can go to the real estate transaction registration center.
3. Ethereum browser's website is etherscan.io, you can query Ethereum related details. At present, the exchanges that can trade Ethereum mainly include: coin an, fire coin, bitnet, etc.
4. Search Ethereum blockchain browser or bitcoin blockchain browser. If it is based on other chains, search other browsers to view
5. What does it mean that there is no verification of the display in the browser and the release contract code? He certainly didn't have time to do it.
6. This has nothing to do with the browser, this need to go to a professional website to query, you can query. Because bitcoin transactions are recorded on the blockchain, there is no way to modify and delete them. However, Google browser is generally used
bitcoin, Ruitai coin, Laite coin, dogcoin and other digital currencies all use blockchain technology.
bitcoin, Ruitai coin, Laite coin, dogcoin and other digital currencies all use blockchain technology.
7. The withdrawal of digital currency generally only occurs on the digital currency trading platform. Where to withdraw cash? It is suggested to check the account number of the accounting platform carefully. It is generally in the personal center. The specific situation still needs to consult the official personnel, and the answer given by the official shall prevail. However, when choosing a digital currency trading platform, it is better to choose a big platform such as Xigu digital asset trading platform and bitcoin China.
8. The reason is that the three-phase load should be balanced as far as possible. That is to say, the total power of single-phase electrical appliances connected to the three live wires should be balanced as far as possible to avoid the situation that the power of electrical appliances connected to one phase is too much or too little. In addition, when there are three-phase motor equipment, Different phase of three wire connection may cause the motor to turn in the opposite direction, so the phase of three-phase socket should be ensured as far as possible, that is, the position of three live wires on the socket is consistent.
9. 1. Wallets have to be open source. You can provide the page through disk or publish the source code on GitHub
2. There must be a block browser to facilitate all users to query relevant data information
in theory, these two methods can avoid the situation that people tamper with data without bottom line.
2. There must be a block browser to facilitate all users to query relevant data information
in theory, these two methods can avoid the situation that people tamper with data without bottom line.
10.
① Select Help - data download - currency data in the menu bar< br />
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