Deduction for failure of Ethereum packaging

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. Build / env.sh go run build / ci.go install. / CMD / geth
make: * * [geth] error 1
there is no such directory, or the directory has insufficient permissions

3.

Ethereum miner fee

1. In a public chain, anyone can read and write data. Reading data is free, but writing data to the public chain costs a certain amount of money, which helps to prevent junk content and protect its security through payment

Secondly, any node on the network (each connected device containing a of the account book is called a node) can participate in the mining method to protect the network. As mining requires computing power and electricity charges, miners need to be paid for their services, which is also the origin of miners' fees

Third, the difference between Ethereum and bitcoin, Ethereum introces the concept of gas, the purpose of which is to limit the amount of work required to execute the transaction and pay for the execution. Gas is used to measure the resources (including computation, storage, bandwidth, etc.) consumed by your transaction (or contract code call)

extended data:

ten rights of miners:

1. The "ten rights" of coal mining enterprise workers in safe proction include: the shift leader does not go down the well, and the workers have the right not to go down the well; The workers have the right to leave the well early if the shift leader leaves the well early; Workers have the right not to work if potential safety hazards are not investigated; If the management personnel command against rules and regulations, the workers have the right not to carry out them

Without safety measures, workers have the right not to start work; Workers have the right not to go down the well if they don't organize safety study before class; If the "Trinity" (monitor, safety inspector and gas inspector) safety inspection is not carried out, workers have the right not to start work

The workers have the right not to start the work if the detection and monitoring system is not installed in place and operates abnormally; Workers have the right not to go down the well if they are not equipped with fully qualified labor protection and protective equipment; The route to avoid disaster is not marked, and workers have the right not to go down the well. The coal mine shall not dect the wages and dismiss the workers for the above reasons

4. Ethereum source code

5. At present, their common point is blockchain + government affairs, but the application fields involve different scenarios. Personally, I don't think it's comparable. For the moment
according to the report, Zhejiang blockchain government platform is mainly engaged in blockchain bills, especially medical bills. The public platform of Changsha's SMIC blockchain mainly focuses on government information disclosure, government affairs handling, intellectual property protection, judicial expertise, finance and so on, but it has not involved the medical bills yet.

6. In fact, investment bank is the proct of the development of securities and joint-stock company system to a special stage. At the same time, it is also a very important subject in the developed securities market and a mature financial system. It plays an important role in the current social and economic development, such as communicating capital, constructing the securities market by supply and demand, So what are the four big investment banks? Now let's give you a detailed introction
1. Merrill Lynch, one of the most famous securities retailers and investment banks in the world, is headquartered in New York, because it is one of the largest financial management consulting companies in the world, and it is also very famous in the financial instry
2. Morgan Stanley is commonly known as "big Mo" in the financial circles. It was founded in New York, USA. its main business includes securities, asset management, business merger and reorganization, credit card and other financial services. So far, it has representative offices in more than 600 cities in 27 countries around the world
3. Goldman Sachs Group, founded in 1869, is headquartered in New York, with branches in Tokyo, London and Hong Kong, and 41 offices in 23 countries around the world. At present, all operations of the company are based on a closely integrated global foundation, By excellent experts for each customer to provide quality service
4. Citibank, which was founded on June 16, 1812 in New York State, mainly provided financial services for some merchants in New York when it was just founded. However, up to now, Citibank has branches all over the world, bringing better financial services to residents all over the world.

7. More than ten hours have passed since I picked up Ethereum from setoken's wallet, and I'm still packing because the back office has to carry out accounting and calculation. If not, you need to call customer service.

8. See if your eth1 network card is in use, if not, it doesn't matter much!

9. Fireflies used to be used to upgrade wedding rings, but now no one upgrades them. Fireflies will still be updated. If the price is high, everyone will catch and sell them