Little ant benchmarking Ethereum

1.

blockchain includes public blockchain, joint (instry) blockchain and private blockchain. Public chain point-to-point e-cash system: bitcoin, smart contract and decentralized application platform: Ethereum

blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies

blockchain is an important concept of bitcoin. In essence, it is a decentralized database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains a batch of bitcoin network transaction information, Used to verify the validity of its information (anti-counterfeiting) and generate the next block

extended data

according to the different degree of blockchain network centralization, three kinds of blockchains under different application scenarios are differentiated:

1. The blockchain with the whole network open and without user authorization mechanism is called public chain

2. The authorized nodes are allowed to join the network, and the information can be viewed according to the authority. It is often used in the inter agency blockchain, which is called alliance chain or instry chain

3. All the nodes in the network are in the hands of one organization, which is called private chain

alliance chain and private chain are also called licensing chain, and public chain is called non licensing chain

blockchain features

1, decentralization. Blockchain technology does not rely on additional third-party management institutions or hardware facilities, and there is no central control. In addition to the self-contained blockchain itself, each node realizes information self verification, transmission and management through distributed accounting and storage. Decentralization is the most prominent and essential feature of blockchain

2. Openness. Blockchain technology is based on open source. In addition to the private information of all parties involved in the transaction is encrypted, the data of blockchain is open to everyone. Anyone can query blockchain data and develop related applications through the open interface, so the information of the whole system is highly transparent

3. Independence. Based on consensus specifications and Protocols (similar to various mathematical algorithms such as hash algorithm used by bitcoin), the whole blockchain system does not rely on other third parties, and all nodes can automatically and safely verify and exchange data in the system without any human intervention

4. Safety. As long as 51% of all data nodes cannot be controlled, the network data cannot be arbitrarily manipulated and modified, which makes the blockchain itself relatively safe and avoids subjective and artificial data changes

5. Anonymity. Unless there are legal requirements, technically speaking, the identity information of each block node does not need to be disclosed or verified, and the information can be transferred anonymously

2. Xiaoyi blockchain, I'm in Duoyuan

3.

Blockchain is a new application mode of distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and other computer technologies. Blockchain is an important concept of bitcoin. It is essentially a decentralized database. At the same time, as the underlying technology of bitcoin, it is a series of data blocks generated by using cryptographic methods. Each data block contains a batch of information about bitcoin network transactions, Used to verify the validity of its information (anti-counterfeiting) and generate the next block

if such technology wants to be put into application, the biggest problem is the "Impossible Triangle problem"

that is, scalability, decentralization and security cannot be achieved at the same time, and only two of them can be achieved

most of the existing public chain projects in the market are difficult to put into use on a large scale

4. Quantum chain: quantum, a troublemaking project, launches satellites and cooperates with braised pork. Recently, it has not performed well and has not been able to break through 100. In the previous comments, it was also said that as China's Ethereum, quantum breaking through 100 is only a matter of time< Qash: in the last two days, the cost price is 1.6 yuan, which is over 9 yuan today. We log on to Hong Kong B website as scheled. The crowdfunding ended on November 8. Today, it's only 20 days, and the profit is 5 times. If converted into annual income, it's 8038%< BTM: it's a good project, Babbitt's son, but it's still stable when everything else is soaring recently. I hope his flying is based on the progress and value of the project, so that he can have confidence. Let's wait until next year
EOS: once EOS flies, it's like a runaway Mustang. It's only a short time from 4 yuan to 21 yuan. Projects like EOS may be beyond imagination, but after all, they are still in the process of development, and the overall market is warm and cold, so it's inevitable for them to fluctuate in the middle
HSR: the momentum of HSR is insufficient. Martians are still sparing no effort in its operation. Community promotion has been launched in an orderly manner. It's landing on fire coin immediately. Foreign countries are also pushing forward and making trouble with quantum. It can be said that the good news of braised pork has never stopped. Give him some time to gather energy. The current price is not the first price, but it's impossible to break through thousands by the end of the year. If there is a forecasting market platform, Can we make a prediction, will Martians eat Xiang
WKC player currency: Recently, many newcomers have entered the currency circle because of this currency. Now there is internal strife. The stock price of Xunlei and WKC are falling. When regular listed companies participate in such a hype market, there is a big policy risk behind it. Moreover, it is said that the computing power of player cloud has been changed and the mining efficiency has declined, An asset similar to Q currency is not optimistic about long-term development
miner's nest mall, sharing miner's machines, only need deposit and return with borrowing. Zero cost at all. Let you empty handed set a batch of bitcoin back, zero threshold experience mining real income.

5. First of all, I'd like to introce some well-known blockchain companies in China, and then I'll personally evaluate which one is good. You can judge for yourself

1. Bubi blockchain company, which is engaged in the underlying technical services and instry solutions of blockchain. That is to say, an underlying blockchain is built, and an adaptation layer is built on it, so that enterprises can quickly establish commercial applications. The underlying blockchain is self-developed. The consensus mechanism is pbft, TPS is 5000 transactions per second, UnionPay is 2000 transactions per second, and bitcoin is 7 transactions per second. Of course, different underlying architectures lead to different performance, because Bubi's commercial blockchain pays more attention to performance. At present, Bubi is mainly used in digital assets, supply chain finance, supply chain traceability, public notary and other fields< 2. Bumeng blockchain. Theoretically, bumeng should be regarded as the proct line of Bubi, but Bubi is mainly engaged in the private chain, while bumeng is an alliance chain. So separately, bumeng is Bubi's layout in digital assets. The underlying technology is Bubi blockchain, but it encapsulates the blockchain according to the scene and provides API interface for enterprises. Enterprises issue their own assets on it. According to the characteristics of blockchain, they can freely circulate their assets. At present, some enterprises such as sunshine insurance, Qianxiang finance, crowdsourcing, Haohuo, etc. have joined in, and the assets in them include insurance policies, integral points, and so on Financial procts and so on. Finally, it is estimated that this platform will break through the barriers between assets, and the end users can freely use and transfer these assets. This is an interesting way for the blockchain instry, because it has both the opening of public chain and the security of private chain

Third, only chain, which is a commodity ID management cloud platform based on blockchain technology, provides enterprise users with commodity asset management, tracing, anti-counterfeiting verification, new supply chain management, etc. in the form of baas. Simple understanding is that only chain has done the content of "supply chain traceability" of Bubi blockchain

four, concentric mutual aid, concentric mutual aid is a mutual aid security platform, put some mutual insurance related information into the blockchain, and users can apply to become nodes, participate in bookkeeping, and maintain their own data

5. Xiaoyi is a decentralized network protocol based on blockchain technology, which digitizes the assets and interests of the real world, and carries out financial business such as registration and issuance, transfer transaction, clearing and delivery through point-to-point network

these five blockchain companies are probably well-known in China, and I personally recommend bumeng

first, bumeng uses the underlying technology of Bubi blockchain, which is very promising in the instry. It has the largest number of landing applications in China. Enterprises can not only use the blockchain technology at low cost (just call the interface, it seems that it is free), but also use the resources inside. Think about being on the same chain with many enterprises and docking resources in the future, User transformation should not be easy

Second, Weilian and Tongxin Huzhu focus on one field, and do not provide underlying technology and instry solutions. That is to say, if you are in this instry or can be used in the upstream and downstream of this instry, you can not be used in other fields. Take mutual security field as an example, zhongtuobang and zebra Club both choose bumeng. Of course, if it is an investment, you can consider it

Third, Xiaoyi, why not recommend Xiaoyi, because Xiaoyi is an open source project, and we all know the domestic business environment, especially when the instry is just beginning to develop, and the domestic market is different from that of foreign countries, Xiaoyi has gone through two rounds of ICO, which will be a great worry in the future operation, and at present, Xiaoyi has not been applied in practice, We have made a Fada platform, which has not been used by any company yet (guess it may be related to the factors of open source, who dares to open their data completely). Of course, the open attitude of Xiaoyi is worth encouraging. Although I guess the advantages and disadvantages of the code are well understood by peers, it is not clear

Fourth, why is there no recommendation for Bubby? Bubby has raised 30 million yuan a while ago, because Bubby is more open and has more resources. Of course, if the business requires high privacy, it can also choose Bubby blockchain

finally, for all my hard work, choose me!

6.

Jybusd: the lucky dollar is a kind of digital currency, but it has been proved to be a kind of digital currency fraud

digital currency investment needs to pay attention to the following matters:

1. Regular security platform

we must trade through regular digital currency investment platform. If we want to trade through digital currency investment, we can choose digital currency with business license and corresponding company service telephone, which will be relatively safe

2, a small amount of capital investment

investment in digital currency investment leverage investment risk is greater, novice early do not blindly pursue money and profit, can survive in this investment market is the most critical. At the same time, in order to prevent the loss of too much money after being cheated, we must keep an optimistic attitude according to our own situation, and we must participate in a small amount of money to rece the investment risk

3. If you are cheated, report to the police in time. Although the police may not help, but at least let the police on record, so as to recover the loss also has a certain help

{rrrrrrr}

extended data :

common digital currency:

1, bitcoin (BTC)

bitcoin the concept of bitcoin was first proposed by Nakamoto in 2009, which is a P2P digital currency based on SHA-256 algorithm. Point-to-point transmission means a decentralized payment system, The total issue amount is 21 million

2. Ethereum (ETH)

Ethereum is a public blockchain with smart contract function, and its founder is vitalik buterin

3. XRP

ripple is a decentralized asset transmission network, which is used to solve the asset conversion and trust problems between financial institutions and users

4. Bitcoin cash (BCH)

BCH is a kind of hard bifurcated bitcoin, which modifies the code of bitcoin, supports large blocks, and does not include segwit. To solve the problem of capacity expansion

5. Lightcoin (LTC)

lightcoin is derived from bitcoin, and its founder, Li Qiwei, went online on June 22, 2017

6. Dash

changed its name to dash after its original name was darkcoin. It is a digital currency that supports real-time transactions and aims at protecting users' privacy. Based on bitcoin, its unique two-layer network can make it more comprehensive for testing and updating

7. Xem

Xinjing coin is a new type of digital virtual coin based on Java, which adopts a new synchronous solution based on POI of proof of importance, and is said to be the first encrypted coin to realize multi signature at the block chain level

Small ant stock (NEO)

Neo, using blockchain technology and digital identity for asset digitization, using intelligent contract for automatic management of digital assets, realizes a distributed network of "intelligent economy". In June 2015, GitHub launched a real-time open source project in 2014, with a total amount of 100 million. Founder Da Hongfei, Zhang Zhengwen

9. Monroe is a new generation of virtual currency based on cryptonote protocol and dedicated to privacy protection

7. I happened to see an activity in my circle of friends, BHT's new application for bitcoin. Now the market can continue to do activities, but I just want to continue to watch the market, have an in-depth understanding, and find something very interesting. The first time I saw BHT new, I was very confused about what it was. Internet search for BHT new didn't give much detailed explanation. Instead, it was stock new. I found that this BHT new came from stock new, which is not very different from stock new operation.

8.

This is a Linux system IP address configuration command. The specific meaning is:

set the IP address of the system to 192.168.0.2; The subnet mask is 24, that is 255.255.255.0; The broadcast address is 192.168.0.255; The name of NIC device is eth0

all computers in the network must set a unique IP address to communicate normally. Because of this unique address, users can select the objects they need from thousands of computers efficiently and conveniently when they operate on networked computers

The IP address is just like our home address. If you want to write to a person, you need to know his or her address so that the postman can deliver the letter. A computer sending information is like a postman. It must know the only "home address" to avoid sending the letter to the wrong person. But our address is expressed in words, the address of the computer is expressed in binary numbers

eth0 is the name set by the system for the network card. If there are al network cards or multiple network cards, there will be names like eth1 and eth2. The name can be set artificially. It is the unique name of the network card in the current computer system

< H2 > after modification, you can use ifconfig command to check whether the modification is successful

9. This unbounded coin is very good. Whether it can surpass Ethereum depends on the application of unbounded coin.

10. It's all rumours. Did he actually use something to shoot the cattle at that time? The videos should have been made later~~~