Ethereum query
Publish: 2021-03-30 03:16:33
1. The digital currency
issued based on Ethereum public chain should be observed according to the price trend of the platform.
issued based on Ethereum public chain should be observed according to the price trend of the platform.
2. Fire coin net is very good.
3.
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
4. 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.
5.
Both aoex and E-app can view real-time dynamic transaction
data
6. With the blockchain browser, bitcoin has its own browser. Ethereum and bitcoin are both used. The token based on Ethereum can also be queried on Ethereum's blockchain browser, and usdt can be queried on bitcoin's blockchain browser
7. Because blockchain technology has natural advantages in realizing smart contracts. Bitcoin, Ruitai, Laite, Ethereum and other digital cryptocurrencies all use blockchain technology. Blockchain is an important concept of bitcoin. In essence, it is a decentralized database and the underlying technology of bitcoin. Blockchain is a chain of uses
8. 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.
9. The specific algorithm of handling charge of galaxy securities trading is as follows:
1. Stamp ty: 1 ‰ of transaction amount. At present, it has changed from bilateral levy to unilateral levy on the seller. The tax paid by investors to the finance and taxation department after the transaction. Shanghai stock and Shenzhen stock are paid at 1 / 1000 of the actual transaction amount, and the tax is dected by the securities dealers and paid by the exchange. Bond and fund transactions are exempt from this tax
2. Securities supervision fee (commonly known as three fees): about 0.2 ‰ of the transaction amount, and there is a mantissa in fact, which is generally omitted as 0.2 ‰
3. Securities transaction handling fee: a share, 0.087 ‰ is charged bilaterally according to the transaction amount; For B shares, 0.0001% will be charged bilaterally according to the turnover; Fund, bilateral charge 0.00975% according to turnover; For warrants, 0.0045% will be charged bilaterally according to the turnover
4. Transfer fee (only for Shanghai stock): This refers to the fee to be paid for changing the account name after the stock transaction. Due to the different operation modes of the two exchanges in China, the Shanghai stock exchange adopts "central registration and unified custody", so this fee is only paid by investors in Shanghai stock and fund transactions, but not in Shenzhen stock transactions. The fee shall be paid at one thousandth of the face value (per share) of the traded shares, and less than 1 yuan shall be charged at 1 yuan
5. Commission for business transactions: the maximum is 3 ‰ of the transaction amount, and the minimum is 5 yuan. Commission for a single transaction less than 5 yuan will be charged as 5 yuan
the content of this article comes from: financial code of the people's Republic of China: application edition, China Law Press
1. Stamp ty: 1 ‰ of transaction amount. At present, it has changed from bilateral levy to unilateral levy on the seller. The tax paid by investors to the finance and taxation department after the transaction. Shanghai stock and Shenzhen stock are paid at 1 / 1000 of the actual transaction amount, and the tax is dected by the securities dealers and paid by the exchange. Bond and fund transactions are exempt from this tax
2. Securities supervision fee (commonly known as three fees): about 0.2 ‰ of the transaction amount, and there is a mantissa in fact, which is generally omitted as 0.2 ‰
3. Securities transaction handling fee: a share, 0.087 ‰ is charged bilaterally according to the transaction amount; For B shares, 0.0001% will be charged bilaterally according to the turnover; Fund, bilateral charge 0.00975% according to turnover; For warrants, 0.0045% will be charged bilaterally according to the turnover
4. Transfer fee (only for Shanghai stock): This refers to the fee to be paid for changing the account name after the stock transaction. Due to the different operation modes of the two exchanges in China, the Shanghai stock exchange adopts "central registration and unified custody", so this fee is only paid by investors in Shanghai stock and fund transactions, but not in Shenzhen stock transactions. The fee shall be paid at one thousandth of the face value (per share) of the traded shares, and less than 1 yuan shall be charged at 1 yuan
5. Commission for business transactions: the maximum is 3 ‰ of the transaction amount, and the minimum is 5 yuan. Commission for a single transaction less than 5 yuan will be charged as 5 yuan
the content of this article comes from: financial code of the people's Republic of China: application edition, China Law Press
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