Those things about ETH test network: novices pay IQ tax, and some people buy test coins.

With the emergence of the encrypted bull market for more than a year, a large number of new participants have joined the block, and many opportunities have appeared in the trend chain at the same time, but it has also led to a large number of new low-level plans in the circle. This is very strange. Recently, someone sold Ethereum test coins online, and there were a lot of white baits, so I bought a lot. After entering the understanding, many novices mainly don't understand the blockchain, and at the same time, there are few related popular science, so some information has caused a wrong understanding, so we launched Xiaobai Popular Science, mainly introducing the Ethereum Examination Network.

As the name implies, the test network is a function and performance test process before the formal product or program is launched. Different public chains have their own test networks, such as Bitcoin, Litecoin and Ethereum. Test networks are generally divided into private test networks and public test networks. Private test network is a test environment built by our local area network or local machine. Open test network refers to the test network environment that everyone can access. Generally speaking, in the Ethereum Metamask wallet, we can see that the Ethereum public * * * test network is mainly divided into the following categories:

Ropsten: the blockchain of POW is very similar to the current Ethernet main network.

Kewan: Blockchain of Poa pratensis

Linkby: Blockchain of Poa pratensis

Goerli: blockchain of POS, benchmark ETH2.0

Different test networks are not only different in block model and * * * knowledge mechanism, but also in the types supported by software clients and the transaction mechanism of garbage disposal. Others are virtual machine portals that support the use of EVM, that is, if it is not the Ethernet channel and underlying function test or some performance parameters of DApp, the others are the same for ecological projects.

Before the bull market, most DApp developers in Ethereum actually used Ropsten test network. Because Ropsten test network uses POW mining, like the main network mining we have seen, it needs special graphics cards and other equipment. The biggest feature of this part of the test network is its low computing power, so the acquisition cost is very low. In addition, with the support of the Ethereum Foundation, it is actually very easy for the public to obtain the corresponding test coins for free through open channels. Mining methods and other tests, so the cost of testing is cheaper, anyway, the cost is obtained. Of course, the industry test network does not have much commercial value, and the test currency is worthless and can be obtained for free. People can access free websites by testing the network.

After entering the era of Ethereum 2.0, the main flow of the main network is that the beacon chain is officially launched, the node verifies the ETH pledge, the node software runs, and then the POW chain is transformed into a POS chain. The deployment of smart contract in the original POW network is still valid, but the mining method has changed, which makes it necessary to use different mechanisms to run multiple test network functions before going online, so as to ensure that the formal startup can proceed as smoothly as possible.

On the main network, the current progress is that the beacon chain of Ethereum is online, the POW chain continues to run, and other fragment chains have not yet run. At present, the mainstream 2.0 client testing network is the Golli testing network initiated by Prysmatic Labs, which has been running since 20 19. Tapoz, the test network of Ethereum 2.0, has been running since 202 1 Other open test fragment chains are still not running publicly. After the merger of Ethereum 2.0, the Golli test network is now called Ethereum 2.0 test network.

Because it is the Ethereum 2.0 test network and the focus of blockchain technology development in the next few years, the Gurley test network is actually quite popular. First of all, you need to participate in the block generation and operation of test network verification nodes, so you must need 32 Golly test network test coins. Previously, Prysmatic Labs provided 32 Goerli test coins in official website for operators who were interested in verifying the test nodes, which fully met the requirements of the test nodes.

After obtaining 32 test coins, the verifier needs to pledge the Golli test coin call contract on the Golli test network like the main network now, in order to obtain the qualification to run the test node. Then run the test network client software on the server to complete the subsequent test network participation process. After the test network verifier completes the establishment of the test network verification node, he can try to deploy various smart contracts or conduct other tests on the test network verifier.

The corresponding process on the main network is the transition from POW main network to POS process, which we will see later. In other words, if a project wants to be deployed in Ethereum in the next few years, the closest test network is the Golli test network. Of course, because EVM virtual machine is used for contract deployment, many projects will still choose Rinkeby test network for testing. Rinkeby test network adopts POA*** identification mechanism (authoritative authentication) and uses verifier to unify the account book status. This effectively prevents repeated expenditure. Because of this, Rinkeby test network actually provides a good test network experience for developers and attracts many developers.

Golly test network is currently running in POS mode, and a large number of test coins are generated every day. However, due to the current shortage, some test coin faucets provide relatively few test coins to the public. As can be seen from the above, the main purpose of Golly test coins is to deploy corresponding 2.0 verifier test nodes for 32 test coins. Of course, the test node will not generate actual income.

In addition, the main user of Gori experimental currency is DApp Ecological Project Party. Since Ethereum plans to enter the 2.0 phase, some projects will deploy their test dapp on Golli's network, so there are not many smart contracts actually deployed on Golli's test network. Since the bull market, Golly test network has also ushered in a relatively active period, which to some extent benefits from the DApp project's test network activities attracting a large number of wool parties.

In short, when the main network of the project is officially launched, the DApp development team is usually deployed in the public to test the network contract, and then it is made public, so that users and some DApp bounty hunters can test it to find some mistakes. If not, it will be tested internally to ensure the safety of the project.

Ecological project testing activities generally have corresponding bonuses. Some projects also conduct stress tests on streaming media applications, DApp, and publicly release some testing activities, such as paying attention to official social accounts, and then experiencing the test network. When the project is officially provided, you will get a project deletion token.

Almost zero cost, because of this kind of testing activity and getting valuable tokens, it attracts many ordinary users. At the same time, a lot of eth gas is used, so there will be a test premise when using the test network. It is precisely because of this that many trial coins were mostly dry when they accepted the lead in the bull market (the trial coins were brought out, but there was no trial coins), so there was a situation of trading trial coins.

For most coin circles, for long-term investors, it is natural to know that test coins are worthless, so some black-hearted businessmen buy test coins mainly because they don't know the details of Ethernet and Ethernet Plaza 2.0-2.0 and Xiaobai and novice tests, and some articles on the test network are unclear, which causes some misunderstandings to novices. The purpose of testing money is always to test contacts. After the main network is started, the test network still exists and plays the role of testing in the subsequent key functions, instead of falsely saying that "the test network and the main network merge and the test currency becomes the main network currency", these black traders said.