Why should BTC be expanded

1. After the mobile phone is infected with the virus, don't panic, just check and kill it in time
turn on Tencent mobile phone housekeeper security protection (or in-depth check and kill, turn on settings stubborn Trojan horse special kill)
if it's not enough, You can get the root and clear it
Open Tencent mobile phone manager (PC) - App treasure - Toolbox - one click root
or swipe the machine
Open Tencent mobile phone manager (PC) - App treasure - Toolbox - swipe the machine
or leave the factory
click settings immediately, find the settings to restore the factory, click to restore the factory and restart the phone. Virus Trojans are basically cleared. If there is a memory card, take it out, format it and put it back into the phone
3. Keep a good habit of using mobile phones. Install well-known security software, don't log on the website of pornography, gambling and drugs, don't click the unknown link, don't click the SMS with link from friends, often scan the mobile phone system, etc
4. If you find a problem, you must solve it immediately. Don't delay your time.

2. yes. In 2017, the size of the capacity hit this "invisible wall.". Soaring costs have made bitcoin unreliable. Some users can't confirm their transactions even after waiting for many days. Bitcoin stopped growing. Many users, businesses, enterprises and investors have abandoned bitcoin. Its market share in many virtual currencies also dropped rapidly from 95% to 40%.

3.

March 6 (Xinhua) "blockchain is a good technology, but it is still in the early stage of development. We need to establish an effective application mode. Tencent is also actively exploring the application of blockchain in various scenarios." Ma Huateng, chairman and CEO of Tencent, expressed his views on the current situation of blockchain

In terms of specific application scenarios,

CAI Yige said that Tencent will increase its exploration in the direction of blockchain combined with supply chain finance in 2018. As early as April 2017, Tencent has officially released the white paper on Tencent's blockchain scheme, and the relevant blockchain technology has been applied by Tencent in many fields, such as supply chain finance, logistics information, legal deposit, public search, Tencent micro gold, etc“ Studying blockchain technology and expanding blockchain application scenarios is definitely our development direction. " Cai Yige said

4. Slicing technology is one of the common methods used by developers to improve transaction throughput
in short, slicing is a partition method to divide computing power and storage workload in a point-to-point network. After slicing, each node no longer needs to deal with the transaction load of the whole network, It only needs to process the transactions in the partition (or partition)
just like the current blockchain, the information contained in the partition is jointly maintained by multiple nodes, thus ensuring the decentralization and security of the ledger. After the partition is enabled, everyone can still see all the information in the ledger, but people no longer need to process and store all the information

5. The size of each block is one megabyte, which can hold more than 1000 transaction information. If you watch it in the last bitcoin blockchain browser, you will find that each block is about one megabyte, which has reached the upper limit of the block capacity. If there are more and more transfers in bitcoin's network, Many transactions will not be packaged and confirmed in the first block after the transaction. It may take several blocks or a longer time. In the history of bitcoin, there have been several st attacks, among which many traders create a large number of small transfers in the exchange (currency exchange). The st attack is that someone creates a large number of small transfers, making a large number of transactions to be confirmed in the network, resulting in the normal transfer can not be confirmed, The confirmation time is delayed, which affects the normal operation of the network
many traders wait for two days or more before their transactions are confirmed. Although st attack is a very extreme example, the normal transfer volume of bitcoin network has far exceeded the maximum capacity it can bear. The size of each block is now one megabyte, so we should expand the capacity of bitcoin block and break through the existing limit of one megabyte, This process is called capacity expansion.

6. Download address: http://desktop.google.com/download/earth/GoogleEarthSetup.exe

following the acquisition of keyhole in October last year, Google launched a free mapping software based on satellite images for the first time. This is quite similar to the plan after the acquisition of Picasa. Google Earth functions like Google map, the company's online map service. Users can zoom in on a 3D map or get a driving guide

John Hanke, general manager of keyhole, said that Google Earth uses broadband streaming and 3D graphics technology, which is like a video game. It allows users to explore the world interactively - the nearest destination to search can be their neighbor; It could be anywhere in the world. In addition, the biggest difference between Google Earth and Google map is that Google Earth can also allow users to view the terrain and buildings by rotating the angle, adding notes to the map<

Google Earth function introction:

1. Combined with satellite images, maps, and powerful gogole search technology; Global geographic information is just around the corner
2
3. Input the destination and enlarge it directly
4. Search schools, parks, restaurants and hotels
5. Get driving guide
6. 3D terrain and buildings are provided, and the viewing angle supports tilt or rotation
7. Save and share search and favorites
8. Add your own comments.

7. The core team has a great influence in the expansion of bitcoin. The core team has always been responsible for the development and maintenance of bitcoin system, and made outstanding contributions to the development of bitcoin in its early stage. However, with the passage of time, this group of technicians has become not so simple, utilitarian become stronger
now, two of the three core members of the core team are BS employees, which has been criticized by people all the time. In particular, the core team refused to expand the capacity of the main chain, set the block size of the main chain to 1m, and took on the function of the main chain through the side chain lightning network to solve the problem of bitcoin transaction congestion. This scheme is resisted in the bitcoin community. The side chain lightning network can only be used as a supplement to the main chain, and it is unacceptable to replace the main chain.

8. Capacity expansion is a means that when a container or load is not enough to support or carry the demand of existing things, we can expand the capacity of the container or load to meet the growing demand, so as to relieve the pressure on the current container or load
at the beginning of the birth of bitcoin, Ben Cong, the founder of bitcoin, did not deliberately limit the block size. The maximum block size was 32MB, and the average block size was 1-2kb at that time
at that time, there are few bitcoin users and the transaction volume is not so large, which will not cause block congestion. However, since 2013, with the price of bitcoin rising sharply, there are more and more users, resulting in network congestion of bitcoin and rising transaction costs of users
up to now, there is a backlog of hundreds of thousands of transactions on the bitcoin blockchain. The average transaction cost of bitcoin is 376 times higher than that in September 2010. The processing speed of seven transactions per second has obviously been unable to meet the needs of users. The bitcoin community has begun to explore how to "expand the capacity" of bitcoin
by modifying the underlying code of bitcoin, the transaction processing capacity can be improved
there are two development and design schemes for bitcoin expansion, namely, the first layer and the second layer expansion technology
· the first layer of capacity expansion technology is to improve the blockchain itself, to make the blockchain itself faster and larger. Generally speaking, it is to change the content of the consensus part of the blockchain
· the purpose of the second layer expansion technology is to move the computing to the lower chain, that is, to solve the problem through the side chain technology
expansion protocol and outcome
expansion protocol generally needs the support of miners, which can be roughly divided into modifying block size, soft fork, hard fork, isolation witness and so on
take bitcoin as an example:
bitcoin is now divided into big block bitcoin cash (BCH) and isolation witness. Isolated witness is now recognized as bitcoin in the market, while big block coin is named bitcash. It can be predicted that in the future, bitcoin will focus on off chain trading. Including lightning network and side chain. These two new things are not mature at present, but they are highly expected by many people
bitcoin will develop a large number of isolated witness transactions and make more derivative technologies on the basis of isolated witness. Most likely, bitcoin will be pushed forward by technology
bitcash will focus on the development of monetary function, rece transaction friction as the main way, and gain more extensive users on the chain as the main development direction
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9. BTC expansion is mainly to increase the capacity of each block, so that each block can accommodate more transaction records, so as to improve the transaction speed of bitcoin and solve the problem of transaction congestion