Ethereum's physical landing application

1. In fact, the rise and fall of digital currency is a normal situation. The key is to see whether you are optimistic about its long-term value. Relatively speaking, if the long-term value is worth investing in, then the short-term decline can be ignored. At the same time, if you don't know much about digital currency users, it is recommended to choose a reliable and good platform for investment. The investment period needs more than six years, Word of mouth should always be good, you can take a look at AEX, fire coin these two, but also more reliable, you can also understand their own network first

2. Answer one by one:
What are dapps
there are too many blockchain applications such as Ethereum, Star Cloud chain, EOS and loom
What are the landing applications
bitcoin is a blockchain application of currency / assets; There is R3 alliance, which is used for bank settlement; Go to the central exchange; Blockchain games, as mentioned above, have been implemented. The most important landing scenario in the second half of 2018 is probably games
what special websites are there to learn about< br /> www.dappworld.com
this collection is comprehensive, including blockchain applications and games. There are Ethereum, Star Cloud chain, EOS, English version and Chinese version
www.stateofthedapps.com
contains Ethereum's blockchain applications.

3.

From the current mainstream blockchain projects, blockchain projects are mainly divided into four categories: the first category: currency; The second is platform; The third category: application category; The fourth type: asset token

currencies mainly act as the "exchange media" in the field of blockchain assets, and the exchange media refer to general equivalents, such as gold and silver bills in the past< (currency exchange on trading blockchain assets)

platform projects refer to the establishment of technical platforms to meet the needs of various blockchain application development, which can rece the threshold of application development on blockchain

application projects cover a wide range of fields, including finance, social networking, games, property rights protection, etc., and are also the fastest growing fields of blockchain assets

asset token project refers to the blockchain mapping of physical assets, that is, the physical assets on the chain. At present, there are no more than 10 varieties

01 currency

the first category is currency project, which is also the earliest blockchain project. Currency projects mainly include bitcoin and lightcoin. In addition, there is another kind of asset with the characteristics of anonymity. Its main functions include protecting the privacy of both sides of payment while realizing payment. The well-known ones are dash, monero and zcash. Currency is mainly used as the "exchange medium" in the field of blockchain assets. The exchange medium is the general equivalent you use to exchange goods. For example, gold, silver and silver bills can be used as the exchange medium in the past. At present, there are more than 2100 types of digital assets in the world, and the number of currency blockchain projects has increased rapidly recently. As of June 2018, bitcoin is still the largest market value

02 platform type

the second type is platform type blockchain project. The main function of platform type blockchain project is to establish a technical platform to meet the technical requirements of various blockchain application development; In short, platform applications allow developers to directly issue digital assets and write smart contracts on the blockchain. Smart contract is a computer program running on the blockchain database, which can be automatically executed under the conditions of its source code setting

for example, you develop a smart contract based on the house rent protocol on the blockchain. When the owner receives the rent, it will trigger the automatic execution and give the security key of the apartment to the tenant

the main function of platform blockchain projects is to establish the underlying technology platform, so that developers can do application development on the underlying technology platform. A considerable number of platforms are still in the development state. As of June 2018, Ethereum has the largest market value

03 application

the third category is application blockchain projects. Application projects are blockchain projects based on blockchain development platform (such as Ethereum), which can solve many problems in various fields of the real economy

for example, augur, Golem, vechain, omisego, which provides asset exchange and transfer services. Using blockchain technology, these projects can better solve the problems of trust and cross-border circulation. At the same time, using smart contracts and tokens on the blockchain, they can better realize automatic execution and greatly improve the efficiency of social and economic activities. Application blockchain projects cover a wide range of fields, including finance, social networking, games, property rights protection and so on. It is also the field with the fastest market value increment of blockchain projects at present

04 asset token

the fourth category is the asset token blockchain project. Asset token refers to linking the blockchain assets to physical assets such as gold and US dollars, which is the blockchain mapping of physical assets. As of February 2018, there are no more than 10 varieties. The typical representatives are usdt against US dollars, digix Dao against gold, Digix each token represents 1 gram of Gold Certified by the London Bullion Market Association. Asset token has the advantages of convenient transaction and safekeeping. First of all, asset token is more convenient for transaction. Because blockchain assets can be split, it has better liquidity

for example, at present, real estate needs to be transferred as a whole. If the real estate can be token, it can be split and purchased, which is more convenient for transaction. Secondly, the token of physical assets is more concive to custody. Gold is easy to wear out and cause losses in physical transactions, but there is no need for physical transfer after the token of physical assets, which is more concive to the custody of physical assets

4. Before, when we talked about decentralized applications, we always thought of foreign procts, such as Ethereum. But when we talk about this topic today, I think more about China's own Asch, a new generation of decentralized application development based on side chain technology<

arch is a decentralized application development, and it is also the first decentralized application in China. Its purpose is to help developers quickly create decentralized applications. The system is easy to use, flexible and safe
in terms of mode, it is similar to Ethereum and belongs to blockchain service, but the implementation mechanism is quite different. Taking Ethereum as an example, its biggest feature is that it greatly expands the functions of the script engine, adds new instructions such as reading blockchain, charging and jumping, and relieves stack memory, function call depth and script length restrictions. However, this method has a big disadvantage that the application code itself and the data generated by the application exist in the same blockchain, resulting in the rapid expansion of the blockchain
but arch is different. Its extensibility is not realized by transaction script, but by side chain. There is a main chain and several side chains (mainly provided by developers) in the ash system, but each chain only supports a limited number of transaction types. The logic of transaction or contract is written directly by the host language, not by the transaction script
the advantages are as follows: firstly, it reces the difficulty of contract programming; secondly, it avoids blockchain expansion; thirdly, each application can customize personalized blockchain parameters<

ash does not directly crypti (decentralized, blockchain based app store) or lisk (it is a new generation, allowing JavaScript development and distributed applications to use an easy-to-use, fully functional ecosystem), But it will refer to crypti's architecture and reuse some of its code, but not too much
there are two main differences.
crypti uses dpos, on which we add pbft algorithm to enhance consistency and rece double payment risk
we use C + + language to write some key moles, and nodejs is still used to write the non performance hot parts.

5.

Anti counterfeiting, such as frog coin and Weilian the source and process of frozen food monitoring of final procts such as imported milk powder and luxury goods: red wine, bags and refrigerators, because it is impossible to cheat by writing into the blockchain Back modification is being implemented or has been implemented (only the chain's partners are very strong)

smart contract or intellectual property rights, such as publishing a song. In the blockchain, you own the song, use the smart contract to sell and protect the property rights, such as Neo and Ethereum. Game development or program development: for example, cryptokitties are free to breed and trade different kinds of cats without age or rarity (the closer the age is, the more expensive it is)

the evolutionary version of ICO IPO raised $40 billion in 2017, which is the securities of any company or indivial to support its development of e-money Platform (polymeth)

free trade of game items under development

6. If century Jiayuan wants a mobile phone number, 80% of them are cheaters. This website will try to use some member information to cheat other members' mobile phone numbers. Once it wants a mobile phone number, it will call you and ask if you need matchmaker one-to-one service. My friend signed up for this website and left an old number. The new number was left to a person with good information. However, it didn't take long for this person's information to be closed. It's estimated that my friend's mobile phone number will be hacked. After that, some website staff called to ask whether to provide one-on-one service. My friend has bought a diamond member, As a result, they still cheat others by immoral means. So don't leave any numbers.

7. It should not be. Ask him which exchange he opens an account in and tell me not to go to a small exchange. That's what I do

8. Many virtual currencies, once withdrawn from the exchange, have to be stored in third-party wallets such as imtoken. This is also forced helpless, because there is no own wallet, so can only "rely on others."
How can we live an independent life without looking at others? This will lead to a word: the main chain
the term "main chain" comes from the "main network" (relative to the test network), that is, the officially online and independent blockchain network
at present, among the top 50 blockchain projects in terms of market value, 12 projects are "main chain" (the current data has changed), and Ethereum is the most successful one
Ethereum is a main chain that has its own independent wallet and can "provide housing" for other currencies
next, through the analysis of Ethereum, we will give you an in-depth understanding of what is the main chain
most of the crowdfunding projects in the market are based on Ethereum. You can understand that Ethereum is a computer operating system, similar to the windows system, and the various tokens on Ethereum are equivalent to all kinds of software on our computers. Developers can pay Ethereum to run projects on Ethereum. However, Ethereum is not perfect. The more projects based on Ethereum, the greater the network demand for Ethereum. In serious cases, it will lead to congestion
in fact, most of the main chain projects are still in the stage of technology R & D and improvement, and there is still a long way to go before the real technology is implemented
the most fierce competition in the field of blockchain is actually the battle of "main chain". Whoever can become the main chain of the basic layer of the blockchain is likely to become the future giants such as apple and Microsoft
in addition, in the domestic public chain, the Walton chain is the underlying commercial application public chain, which combines the software level features of blockchain, such as decentralization and unforgivability, with the hardware of RFID chip independently developed, to provide traceability, authentication solutions, and design instry data encryption and distributed storage database building services for all walks of life
of course, it doesn't mean that projects with a main chain are better than projects without a main chain. Some projects, e to their nature, don't need a main chain, such as BNB, whose main purpose is to offset the handling charges in the currency exchange, so it doesn't matter whether there is a main chain
from bitcoin to Ethereum, and now to EOS, many gods are building the main chain, trying to climb the tide of the times. Who will be the future king of blockchain? Let time give us the answer.

9.

First of all, as a kind of underlying technology, blockchain landing is to combine the characteristics of blockchain technology with some fields, so as to give better play to blockchain technology to create greater value. I'll talk about it in detail

< H2 > the meaning of blockchain

in a narrow sense, blockchain is a kind of chain data structure composed of data blocks connected in sequence according to the time sequence, and it is a distributed account book that can not be tampered with and forged by means of cryptography

broadly speaking, blockchain technology uses blockchain data structure to verify and store data, uses distributed node consensus algorithm to generate and update data, and uses cryptography to ensure the security of data transmission and access A new distributed infrastructure and computing method of programming and operating data by using intelligent contract composed of automated script code, the data of the blockchain can not be tampered with, and can be combined with the e-commerce instry. Now there are a lot of fakes, combined with the technical characteristics of the blockchain. Every stage of goods from proction to shelf sales can be "data linked", so every stage of e-commerce can be transparent, which can greatly improve the safety of food<

NMC coin, also known as domain name coin, is a distributed domain name system based on bitcoin technology, with the characteristics of security and non censorship. There are no cheaters. However, e to the relative lack of supervision, digital currency is easy to be pulled up or sold, so it may become rich overnight, or it may lose all the principal overnight. This is the general nature of digital currency, not only NMC currency, but also the derivation and expansion of block chain technology

as a kind of underlying technology, blockchain plays a al role in this society. We must treat blockchain technology with a rational perspective, and we should not blindly trust others to invest, so as to avoid being deceived