Is there any difference between going to the center and having a

1. Centralized exchange and decentralized exchange have their own advantages and disadvantages, and the difference is very obvious. Let's take a look at the centralized exchange first. To put it bluntly, the trading mechanism of the centralized exchange is actually similar to our traditional stock trading
the first step is to register (open an account) and set the password. The second step is user authentication (KYC). The third step is to recharge. Here comes the key. The third step is the most important. Because you need to charge money to your address in the exchange before you can trade money in the exchange. The address of the exchange is actually a wallet address, but the ownership of the wallet is not the user, but the exchange, that is to say, the private key of the address, you don't have it!!! Do you understand the meaning

well, after recharging, the transaction is finished. The user submits the instruction (hanging order) to the server, and then the exchange will be responsible for matching the transaction, which is exactly the same as the stock. The last is cash withdrawal (withdrawal of currency). Users can send instructions to transfer the currency from the exchange address to their wallet address. The above is the trading mechanism of the centralized exchange. In these steps, all actions will have costs. No matter you recharge, trade or withdraw money, gas and handling charges can't escape
then let's look at the decentralized exchange. The trading mechanism is different from the centralized exchange. The first step is to register (open an account) and set the password. It doesn't make any difference. But then it's a little different. KYC is not used. But because there is a private key, the ownership of this address is completely controlled by the user. The second step is recharging. This is not very different from the centralized exchange. You still have to make your own gas
after recharging, we can also trade in the decentralized exchange. Users can also register orders, and exchanges will also be responsible for matching transactions, but the matching is done by smart contracts. Finally, cash withdrawal (withdrawal of currency) is initiated. After withdrawing currency, users can directly transfer the currency from the address of the exchange to their wallet address. This step is the same as that of the centralized exchange
the above is the trading mechanism of centralized and decentralized exchanges, and the difference between them is also obvious. Because all currencies in the central exchange are under its control, the trading efficiency is very high, and it is similar to the stock trading process, convenient and suitable for most users. Conversely, the risk lies in this. If the exchange itself loses its integrity or is attacked by hackers, the user's capital (currency) is not guaranteed
all the transaction processes of decentralized exchanges are completed by smart contracts, so the transaction efficiency is relatively low (TPS of blockchain technology has always been a soft rib), but relatively, the capital (currency) is completely in the hands of users, so the security is relatively high. In addition, there are also KYC, where KYC is needed for centralization, but not for decentralization, and the security of personal information is relatively high. Compared with the decentralized exchange, the advantages of the centralized exchange lie in the trading depth and the number of users, which are unmatched by the decentralized exchange
therefore, centralization and decentralization have their own advantages and disadvantages. It depends on the user's own choice. They like convenient, centralized, secure and decentralized.

2. Centralized wallet, also known as off Chain Wallet, completely depends on the company and server running the wallet. bitcoin stored in the exchange is stored in the centralized wallet (off Chain Wallet). The private key is not owned by the user, but in the wallet project side of the centralized server hosting chain, the fund is usually entrusted to the server
private keys and assets are transferred to the wallet for centralized management. Users don't need to worry about the loss of the private key of this kind of wallet procts, resulting in the loss of funds; However, the capital risk will be more concentrated in the wallet project side and server side. When the centralized wallet is conquered by hackers, users will suffer unnecessary losses
decentralized wallets, commonly known as onchain wallets, have private keys maintained by users and assets stored in blockchains
decentralized wallets are often referred to as onchain wallets. The private key is handed over to the user. If the private key is lost, the wallet will not be able to help the user recover, and the funds will be lost forever. But the decentralized wallet is difficult to be attacked by hackers, and users don't have to worry about the self stealing of the wallet service provider
centralized wallets are where assets are stored, while decentralized wallets are where private keys are stored
except for the exchange, it is not recommended to use the centralized wallet, although losing the private key may help you find it. But there is always a risk that the company will run
a decentralized wallet is equivalent to a channel, a channel where you can master mnemonics to control your assets on the blockchain. For a decentralized wallet, the most important thing is to protect the security of the [private key]
the application fields of blockchain include digital currency, token, finance, anti-counterfeiting traceability, privacy protection, supply chain, entertainment, etc. with the popularity of blockchain and bitcoin, many related top domain names have been registered, which has a great impact on the domain name instry.

3. Centralized cloud service is a large amount of data concentrated on a unified cloud platform. Decentralized cloud service is that data storage is not in a center, but scattered in all nodes around the world. Decentralized cloud services derive more decentralized applications. In terms of decentralized cloud technology, China's Amway cloud is in the forefront of the world. Its decentralized cloud platform xnmatrix, which combines the resources of top universities such as Oxford and Berkeley, as well as downstream enterprises such as global miners and AI robots, is building the world's largest decentralized cloud platform.

4. The precious metal exchange is only a company, and the precious metal exchange center belongs to a region including the precious metal exchange.

5.

1. Efficiency is different: the efficiency of decentralized network is higher than that of centralized network, but conversely, the security of centralized network is higher. On the whole, centralized network is suitable for high security applications

2. Different characteristics: centralized network means that each time two client computers communicate with each other through the server. The decentralized network is the initial need to go through the server, later communication does not need the server

3. Different costs: the characteristics of collective maintenance of blockchain can rece a lot of costs. The centralized network involves the maintenance, confidentiality, operation and so on of many systems, which must require a lot of human, financial and material resources. These things do not exist for the decentralization of blockchain, so they can save a lot of costs

extended materials:

precautions:

in the aspect of blockchain governance, an interesting trend recently is the re emergence of online virtual currency holder voting as a multi-purpose decision-making mechanism. Sometimes the vote of the coin holder is used to decide who runs the super node of the network (e.g. dpos in EOS, Neo, lisk and other systems), sometimes the protocol parameters are voted (e.g. the upper limit of Ethereum fuel supply), and sometimes the vote and direct application of approval (e.g. tezos) protocol upgrade are also concted

in all these cases, voting is automatic, and the protocol itself contains all the logic needed to change the verifier set or update its own rules, and automatically responds to the voting results

6. The central differential lock can lock the center differential, causing the front and rear axles to rotate at the same speed. It can deal with the situation that the front axle or rear axle skids and makes the vehicle unable to move
there are Tosen (commonly used by Audi) and dental inlay locks. There are also electronic clutches for differential and locking function. Many SUVs use the central multi disc clutch to drive the rear axle
vehicles that emphasize off-road capability have mechanical differential and differential lock, but not necessarily central differential lock, or rear differential lock
there are some antonyms between differential and differential lock. Differential can ensure the differential rotation of two output shafts, while differential lock locks the two shafts to prevent differential, so they have different functions.

7.

bus route: No.503, the whole journey is about 6.8km

1. Walk about 1.2km from yong'anli to DABEIYAO North Station

2. Take No.503, pass through 3 stops, and reach Anjialou station (or take NO.402 or Yuntong line 107)

3. Walk about 330m, Arrive at the first Shanghai center

bus line: Metro Line 1 to metro line 14 to 677 Road, the whole journey is about 8.1 kilometers

1, take the subway line 1 from Yongan, through 2 stations, arrive at the grand road station

2, walk about 280 meters, transfer the subway line 14 line

3, take the subway 14 line, pass the 2 station, arrive at Zao Ying station

4, walk about 220 meters. Arrive at Zao Ying Bei Li station

5, take 677 Road, pass 1 stops, arrive at the home building station (also can take 621 Road)

6, walk about 340 meters, arrive at the first Shanghai center

8. Qinzhou is warm in winter and cool in summer, with a pleasant climate, close to the mountains and the sea. Qinzhou, with its beautiful scenery, numerous historic sites and splendid culture, has become a famous tourist attraction in southern Guangxi since ancient times. With its unique advantages and rich tourism resources, it has attracted many tourists. The best time to travel in Qinzhou: Qinzhou is a subtropical marine monsoon climate zone with abundant heat, abundant rainfall, average annual temperature of 22 ℃, and can travel all year round. It is worth mentioning that a large number of white dolphins swim in Qinzhou's Sanniang Bay from October to November every year, which is an opportunity that can not be missed by curious tourists. There are more than 30 scenic spots in Qinzhou. The main scenic spots in Qinzhou are: sunny Sanniang Bay, where the white dolphin is the pride of Qinzhou people and the best subject of photography; Seventy two Jing, a famous maritime scenic spot in Penglai, is as beautiful as jade belt and Pearl Island. The world's largest bronze statue of Sun Yat Sen stands here; In the sea are Malan Island, a fairyland on the sea, Liufeng mountain, an ancient residence in Dalu village with many historic sites, and the former residences of famous patriotic generals Liu Yongfu and Feng Zicai. Qinzhou had twice evaluated the eight sceneries of Qinzhou in the Ming and Qing Dynasties, and the second evaluation has been more than 300 years. The new eight sceneries of Qinzhou have been selected by Qinzhou eight sceneries evaluation committee. They are: Wanggang spring, Liufeng Zhuxiu, Longjing huanzhu, Liufeng Baodi, Lingdong Yuri, malanxian Island, Yuezhou Tianhu and zhuilindiecui

it is located in the northwest of Qinzhou Port Economic Development Zone, in the famous Maowei Sea of Qinzhou. More than 100 islands of different sizes are scattered on the sea surface of Qinzhou Bay, which is 10 kilometers in length and breadth, making this sea area form numerous circular, zigzag and changeable waterways. These waterways are called "Jing" and "seventy-two Jing". In fact, there are more than seven or twelve of them? Jing is like a jade belt, and the island is like a pearl, so it has the good name of "Longjing ring pearl". It's a wonderful feeling to take a boat to visit jingnei: the road is doubtless, and suddenly becomes open. Every time you enter jingnei, you will see different intoxicating pictures, just like a fairyland in the world. No wonder you enjoy the reputation of "Penglai in the South". There are nearly 10000 mu mangroves growing in 72jing area, which are known as living fossils on the sea floor. The green mangroves and the blue sea reflect each other. The scenery is very unique. Since ancient times, it has been a place for literati and poets to visit, leaving a large number of chanting works. At the entrance of 72jing, there are also the largest Yixian bronze statue in China and the "memorial to the death of premier sun" erected by people from all walks of life in Qinxian County in 1926. 72 Jing is a tourist attraction integrating natural landscape and cultural landscape.