Create Ethereum DAPP application

1. Ethereum is a new and open blockchain platform, which allows anyone to build and use decentralized applications running through blockchain technology in the platform
just like bitcoin, Ethereum is neither controlled nor owned by anyone - it is an open source project created by many people around the world. Different from bitcoin protocol, Ethereum's design is very flexible and adaptable. It is very easy to create new applications on the Ethereum platform. With the release of homestead, anyone can use the applications on this platform safely
Ethereum is a programmable blockchain. It does not give users a series of preset operations, but allows users to create complex operations according to their own wishes. In this way, it can be used as a platform for many types of decentralized blockchain applications
in a narrow sense, Ethereum refers to a series of protocols that define a decentralized application platform. The core of Ethereum is Ethereum virtual machine (EVM), which can encode any complex algorithm. In computer science terminology, Ethereum is "Turing complete.". Developers can use the existing JavaScript and python as the model of other friendly programming languages to create applications running on the Ethereum simulator.

2. Ethereum also uses blockchain technology, but it is more convenient to use than bitcoin's blockchain Turing, which is complete and open source. Anyone can create their own application on the basis of Ethereum

3.

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5.

DAPP is the abbreviation of Chinese distributed app for decentralized application
a DAPP has background code running in a distributed peer-to-peer network. The background code of traditional app is running on the centralized server
the front-end code of a DAPP can be developed by any language, just like the traditional app. In addition, DAPP's front-end code can be hosted in distributed storage services, such as swarm or IPFs
If an application = front end + back end, because Ethereum contract is composed of code running in Ethereum distributed point-to-point network, distributed application = front end + contract
the picture shows a DAPP architecture:

app we all know that it is a client application, which is the abbreviation of application. DAPP is d + app, and D is the first letter of English word decentralization. Chinese word translation is decentralization, that is DAPP is decentralized application. This is to understand the concept literally. To form a clear, accurate and necessary concept in the brain, we need to understand DAPP in depth
compared with app, the biggest difference between them is centralization and decentralization. App needs money first, so it needs financing first; Then there will be more people, so we will develop and operate after recruiting all the people. DAPP is the proct of inheriting traditional app and combining the characteristics of blockchain, which is more like crowdfunding mode, sharing mode and decentralization mode

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8. The Ethereum community calls smart contract based applications decentralized apps. DAPP's goal is to make your smart contract have a friendly interface, plus some additional things, such as IPFs (decentralized network that can store and read data, not from the Ethereum team, but with a similar spirit)
DAPP can run on a centralized server that can interact with Ethereum nodes, or on any Ethereum node. Different from ordinary websites, DAPP can't run on ordinary servers. They need to submit transactions to the blockchain and read important data from the blockchain instead of the centralized database.

9. DAPP is the abbreviation of decentralized application, which is called distributed application / decentralized application in Chinese. It is based on the underlying development platform of blockchain, such as Ethereum and EOS. The relationship between DAPP and the underlying platform is just like that between app and IOS and Android

a real DAPP application needs to meet the following conditions at the same time:

1. The application must be completely open source and autonomous, and no entity controls the application over 51% token. The application must be able to be upgraded according to users' feedback and technical requirements, and the application upgrade can only be carried out after the majority of users reach an agreement

2. Application data must be encrypted and stored on the public blockchain

3. The application must have token mechanism (common token based on the same underlying blockchain platform or new token can be issued by itself), and miners or application maintenance nodes need to be rewarded with token

4. The generation of application token must be based on the standard encryption algorithm, and valuable nodes can get the token reward according to the algorithm

take cryptokitties, the most famous Ethereum game, as an example. It is a DAPP running in Ethereum. Players can create, care for, buy, feed and sell the Ethereum stored in Ethereum blockchain, and proce a kitten every 15 minutes. Each cat has unique characteristics, New kittens can be bred by pairing

the DAPP is not owned by an entity, but is created on Ethereum and will never disappear. No one can rob your cat, and no one can change the appearance of any cat; Siphon of life & quot; There is no entity with arbitrary will to this DAPP

after the game is released, everyone can participate in the game, and e to the Ethereum architecture, the privacy of participants can be well protected. Therefore, in the future, investment in DAPP has a very imaginable appreciation space.