Facebook blockchain TPS

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. IBM, Microsoft, Oracle, Accenture, Tencent, Alibaba, Jingdong, network, etc. have all done it. Many large banks, including Ping An Bank, have also launched their own blockchain solution platforms or solutions. However, it should be added that large companies do not mean strong technical strength, because blockchain is still in the hot stage of concept in the world. Unicorn blockchain companies are likely to emerge in the future, such as EOS in foreign countries and honeycomb chain of Fanrong technology in China. The efficiency of TPS and packing into blocks may be much higher than that of large companies.

3.

Public chain, also known as "public chain", refers to the blockchain that anyone in the world can enter the system at any time to read data, send confirmatory transactions and compete for bookkeeping. The public chain is generally considered to be "completely decentralized", because no indivial or institution can control or tamper with the reading and writing of data in it. In terms of application, blockchain public chain mainly includes bitcoin, Ethereum, super ledger, most counterfeit currencies and smart contracts. The ancestor of blockchain public chain is bitcoin blockchain, which has the following characteristics:

1, open source code

upload the code to GitHub, and everyone can get complete blockchain data by downloading, Accept the test of the public

2, complete decentralization

anyone can become a node, each node is open, everyone can participate in the calculation of the blockchain, any node is not permanent, but phased, and any center is not mandatory for nodes. Anyone can read and send transactions, and transactions can be effectively confirmed on the blockchain. Anyone can participate in the consensus process. The consensus process determines whether a block can be added to the blockchain and the exact current state. Everyone can get financial reward from it, which is proportional to their contribution to the consensus process. These public chains are generally considered to be "completely decentralized"

3. Developing decentralized applications

through this public chain, developers can easily develop centralized applications. Public chain can protect the rights and interests of users from the influence of program developers

4. The public chain, as the name suggests, has great inclusiveness and fairness. The better the public chain project does in these two aspects, the more prominent it will be. At present, many public chains sacrifice fairness in order to speed up the transaction, which is not optimistic. There is a project called Fanta network. Their DSC technology claims to be safe, democratic and fair, which deserves long-term attention. However, their code will not be open source until the end of the year, and the progress needs to be accelerated

5. Before October 2018, it seems that the fastest one is REBO, next to EOS. After October, these public chains are basically silent in terms of speed, because bitconch of Baker chain has achieved 120000 TPS Based on many technical advantages, which makes it possible for applications to land. Therefore, the world's fastest public chain is the world's fastest public chain, which can be said to be the leader.

6. There are so many things blockchain can do. However, blockchain is just a technology with a very broad prospect, similar to the Internet technology in the 1990s. The Internet has been proved to be the greatest technology in the 21st century, which has changed the way of human survival
for example, blockchain can be applied to P2P, bills, securities and other financial fields, as well as contracts. Of course, it can also protect intellectual property rights, such as distributed content publishing platform decent

7. In fact, there are many problems.
if you want to have a 3A game company, you need to understand the following prerequisites:
1. Have corresponding qualifications (qualifications and certificates required by various laws)
2. Corresponding capital (including but not limited to time cost, money cost, engine cost, basic cost and technology cost)
3. There is a corresponding accumulation (engine, corresponding expertise, related personnel database, etc.). Special emphasis: Although all statements are similar, the corresponding specialty is particularly important, for example: sense of attack for kapukong)
4. The predecessor of a large number of stand-alone game companies (unique game studio, with the exchange and collision of ideas and Technology). And convenient accumulation)
let's analyze the above points:
1. From the corresponding qualifications, you need to know which qualifications and certificates are necessary to enter this field. But at this point, the number of companies interested in stand-alone games will be blocked. For specific reasons, please contact the Internet by yourself
2. From the perspective of corresponding capital, making 3A stand-alone games requires the existing corresponding engine, and companies that can proce 3A games basically need to have their own exclusive engine. If they use public (illusory, etc., the procts of companies specializing in engine), it is not impossible, but it is basically difficult to proce excellent 3A games. Basically, the investment this time has gone astray. Then there is investment. Under the premise of having an engine, the budget of investment can make many big companies feel painful. What's more, in the case of a high probability of investment failure, few high-level companies will want to invest in this area. In addition, without any experience, we should invest in the development engine first
3. From the perspective of corresponding accumulation, since it is accumulation, it takes time. Even if you spend a lot of time on yourself, it is difficult to complete the accumulation from scratch and from quantity to quality in a short time
4. A large number of studios are even more unrealistic. For the same reason, one qualification and one capital can block most of them
under these conditions, the road of domestic 3A has a long way to go.

8. Network btc123, this website I often use
you can find a trading website on btc123, and then find their official QQ group on the website. If you add a QQ group, you can receive a lot of messages, but there are also many false messages. You can judge for yourself. Or search QQ group with bitcoin keyword directly on QQ
there is also a discussion area on btc-e. if you want to watch others chat there, the news will be very fast.

9. TPS, a popular definition, is "throughput of the system". A professional explanation is "the number of services that the system can handle per second". It is estimated that most people's understanding is over. However, this is a very superficial understanding, which is almost meaningless to the deception and the value of verification, and even has negative effects! Now there are some technologies to improve TPS, such as side chain technology and fragmentation technology. I'm Xiaoju, focusing on the blockchain field

10. The TPS of MAC multi source chain is as high as 15-20 million, which is the only blockchain underlying technology tested by the National Supercomputing Jinan center and the national financial certification center under the Ministry of instry and information technology, and has obtained the authoritative test report