Query Ethereum position

1. Ethereum is a very famous fire coin in virtual currency. It is based on smart contract and covers a wide range. It is a very good investment. The current price is $160, and the best time is about $10000. You can query it on okex and other platforms

2. You can check the market of Ethereum on non trumpet, but you can't trade it. The trend of Ethereum in the past two years can be described as from heaven to hell, with a very large decline. If you want to invest, you can go to the digital currency exchange. At present, the mainstream digital currency trading in the market includes coin security, fire coin network, bitnet, etc.

3.

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. Whether a currency is counterfeit depends on whether it meets the basic characteristics of blockchain. Blockchain is divided into public chain and private chain. The public chain is a block chain based on the principle of decentralized open consensus, which has two characteristics: 1. Decentralized, single point can not be controlled; 2; 2. Open, all people or institutions can participate in any part of the blockchain ecology; Private chain or alliance chain is a local decentralized and non open block chain based on internal or self trust. It has two characteristics: 1. Local decentralization. For example, several banks run one node and have equal computing power; 2. In closed operation, only officially designated participants can participate in the core work of blockchain operation, and even block queries are limited or not open to the outside world at all; Ethereum started as a community project and is still on the road of decentralization. However, Ethereum chooses to become more and more decentralized and public chain like bitcoin. At present, Qube is the largest trading platform of Ethereum in China, followed by oke, and the trading volume of bitmex abroad is not small. Its recognition is second only to BTC.

5. 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.

6. 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.

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 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