1. At the top of Ethereum is DAPP. It exchanges with the smart contract layer through Web3. JS. All smart contracts run on EVM (Ethereum virtual machine) and use RPC calls. Below EVM and RPC are the four core contents of Ethereum, including:
blockchain, consensus algorithm,
mining and network layer. Except DAPP, all other parts are in the Ethereum client. The most popular Ethereum client is geth (go Ethereum)
2. Ethereum is an open source public blockchain platform with smart contract function. It provides decentralized virtual machine (Ethereum virtual machine) to process point-to-point contract through its special cryptocurrency ether (also known as "Ethereum")
The token on the
blockchain is called ether, and the code is eth. It can be traded in many foreign exchange markets of cryptocurrency, and it is also the medium used to pay transaction fees and computing services on Ethereum
the concept of Ethereum was first proposed by vitalik buterin, a programmer, from 2013 to 2014, inspired by bitcoin, with the general meaning of "next generation cryptocurrency and decentralized application platform", and began to develop through ICO crowdfunding in 2014. As of February 2018, Ethernet is the second highest cryptocurrency in market value, second only to bitcoin
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Ethereum platform has no characteristics and value. Like programming languages, it's up to entrepreneurs and developers to decide what to use. However, it is clear that some application types benefit more from the functions of Ethereum than others. Ethereum is especially suitable for those applications that automatically interact directly between points or promote group coordination activities across networks
for example, coordinate the application of point-to-point market, or the automation of complex financial contracts. Bitcoin enables indivials to exchange money without the help of financial institutions, banks or governments. The impact of Ethereum may be more profound
in theory, any complex financial activities or transactions can be automatically and reliably carried out on Ethereum with coding. In addition to financial applications, any application scenario with high requirements for trust, security and persistence, such as asset registration, voting, management and Internet of things, will be affected by Ethereum platform on a large scale
3. Many institutional investors have begun to pay attention to Ethereum. Ethereum also rose and institutional investors have a lot to do with admission. I think Ethereum will go up. The stock exchange proposed to go to Zhongyuan, which is a seven-year-old stock exchange and has never had any security incidents. Trustworthy.
4. Note that Ethereum is 2.0 now. As of 13:57 on the 4th, the current deposit contract address of Ethereum 2.0 has received 1000098eth, and 31252 addresses have completed the mortgage of 32eth. With the increasing number of mortgage, the annual yield of mortgage will graally decrease. After the mortgage amount reaches 1 million eth, the current annualized yield is about 15.7%. Zhongyuan, a well-known exchange, has taken the lead in opening the mining channel of eth2.0 verification node, and then launched qeth. Users can invest their own eth in verification node mining and exchange qeth to obtain liquidity, and then participate in mining. Compared with the disadvantages of eth2.0, qeth has too many things: the liquidity is guaranteed, the user does not have to bear the technical cost, the threshold of participation does not need 32 eth as low as 0.1eth, the nodes are maintained by the platform, and the income is distributed according to eth2.0.
5. Generally speaking, undefined index is the exact writing problem in the process of writing. Notice generally prompts for errors that are not directly related to the execution of code, but don't forget that notice sometimes returns some rendant error information
6. How many account addresses can an Ethereum node have at most
A: generally, there is only one account address, otherwise there will be an error! Blockchain itself is unique. If there are multiple account addresses on one node, it violates the fundamental principle of blockchain!
7. The bifurcation of Ethereum Constantinople is about to begin. Many people are curious about this bifurcation and are not sure whether they need to be prepared in advance
to put it simply: if you are only the holder of eth, you don't need to make any preparation for this upgrade.
8. This number is not fixed, because the price of bitcoin is constantly changing. The highest price of bitcoin is more than $19000. At present, the price of bitcoin is around $4000. You can log in to the bitcoin exchange to view the bitcoin market in real time.
9. After all the towers of the first island are closed, there is a sea crossing bridge behind the last tower. You can go to the central island. You can go to the second island through the central island. All the towers of the third island are closed. After all the towers of the last three islands are closed, you can close the larger towers of the central island.
10. Life is like a pool of ckweed, green and green, with a little bit of water color. When there is no wind, it is like a piece of cloth on the surface of the pool, without any wrinkles. It is also like a natural bronze mirror floating in the pool. Among them, there are also several branches that go straight across the surface of the pool. The surface of the ckweed is slightly broken, but it can't be completely cut, which shows its vitality. Weeds and Kingfisher also disturb the surface of ckweed from time to time, and the ripples of fish are inevitable, which makes ckweed more crowded and tense. Strong wind, wrinkled is ckweed; It is weeds that bend their heads; It is Kingfisher that has disappeared for a long time. The wrinkle is only for a moment. When the wind is a little small, Ping's face returns to its original state. After that, it was wrinkled and floating. Sometimes there are fish "visits.". Wind is the devil, weeds are bacteria, but they can't destroy it. After the wind, the surface is still intact - except for a few sundries. This reminds me of Wen Tianxiang's poem "life experience is ups and downs, the rain hits Ping". Yes, life is not like ckweed. There are always disturbances in a quiet life; And the wind and waves contain a peaceful life. The twists and turns of life, it is not the wind ckweed survival, ckweed is to take root in the water, and people are to survive in the world. Bumpy, long life, sighing to the sky, sighing the past life; Praise the Yellow River, praise the Yellow River majestic; Weeping at the grass, weeping grass nobody knows; Standing on the high mountain singing, singing the power of the high mountain; If there is only the tranquility of ckweed and no strong wind in life, then life is a cup of fresh water and tasteless; If there is only Xiaohe's selfishness, the world is frozen everywhere; If there is only the arrogance of Dashan, there is no selfless love in the world... Your own life and your own road are under your own feet and controlled by yourself. life! Duckweed!
