How To Build Decentralized App (DApps)? | Step-by-Step Guide
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How To Build Decentralized App (DApps)? | Step-by-Step Guide

July 7, 2020      Tarulika Jain

Blockchain technology which came into the picture after the launch of cryptocurrency has already got popular among the other sectors. Enterprises and companies started exploring the application based solutions of Blockchain technology to revamp their operations, custom’s experience and also the complete ecosystem. Presently, organisations across the globe are trying to fetch the benefits of Decentralised Applications made on Blockchain technology. In this article, let us try to enhance our knowledge related to DApps and will understand how to build decentralized app.

What Is A Decentralized Application? | How To Build A Decentralised App?


What is dapp

Some of you might think that the ordinary smartphone apps and decentralized apps are similar, but that is not true. Blockchain technology-based DApps follow a decentralisation model where peer-to-peer transfer takes place without any interference of intermediary, which is different from a client-server centralised model of smartphone apps. Decentralised apps are software communicating with Blockchain and are based on smart contracts that process information from output devices to manage the network. Their interface is similar to any other website or app but instead an API, front end directly functions on the basis of instructions mentioned in smart contracts.

Key Features | Benefits | Classification

Benefits of Dapps

Key Features of DApps

There are some of the features which make DApps from other apps like:

  • Decentralisation: No intermediary to control or manage the network
  • Open source: Programming code can be downloaded by anyone from the web, as it is available for all. (encourages coders to diversify the ecosystem of DApps)
  • Incentive: Miners or participants involved in the validation of transactions are rewarded with digital assets.
  • Cryptography: Data is completely secured with the help of cryptographic techniques.

Benefits of DApps

Blockchain technology-based DApps can benefit in the following ways:

  • Resistant to censorship: As there is no single point of failure (being decentralised connected to every node), it is difficult for any entity to control the data in the Apps.
  • No Downtime: Being the peer to peer system, Blockchain assures that DApp continues to work even if few of the systems connected to the network experience the failure.
  • Own currency: DApps are based on smart contracts so it can easily introduce their own cryptocurrency for payment into the basic functionalities.
  • Tamper proof: DApps are based on Blockchain, where once the Block of information is added, it is difficult to tamper without informing each and every node connected to the network.

Classification of DApps

DApps has been classified on the basis of their connection or utilisation of Blockchain if the Blockchain is made from scratch or just the forking took place. Let us see how they are classified:

  • Type 1: Own Blockchain. For instance, Bitcoin
  • Type 2: Apps deploying Blockchain of Type 1 rather than creating from scratch and issuing the token accordingly.
  • Type 3: Apps deploy Type 2 protocol for underwriting the tokens issued by them.

How To Build Decentralised App?

How to Develop DAPPS

If you are a coder or developer, you must have been waiting for this section of how to build Decentralized App and might not be able to stop yourself to code accordingly. Before starting developing DApp, you must deeply analyze the market to design your app accordingly. Along with it, DApp must have an intuitive interface with a flexible capacity of storage and the scalability must be high. Let us start the tour to develop DApp (on Ethereum Blockchain meant for the development of smart contracts and DApps)

  • Firstly install the Truffle Framework which will offer a number of operational tools and boilerplate code for raising the DApps for Ethereum. (Use g-flag)
  • Then generate the Boilerplate code which will generate a few sets of folders and files for storing the react code, write smart contracts on Solidity, scripts for managing the deployment of contracts, and many more.
  • In the next step, initiate the development environment for starting Ethereum node emulator and creating 10 test accounts and secondly it will start the command line prompt of Truffle.
  • Then, compile the contracts,i.e. Solidity contracts into JSON codes which will include the bytecode of Ethereum Virtual Machine.
  • Deploy the smart contracts into the emulated Ethereum blockchain network.
  • To make your DApp intuitive, add the interactive features by editing App.js file.
  • Finally, try running your DApp on your browser by connecting the Ethereum network with the Web3 object and provider (Metamask extension needs to be downloaded)
  • Modify DApp code so as to run on a Web3 object and store on a “SimpleStorage” contract. Finally, our simple DApp is made. Run DApp and have a smile if everything goes well.

Some of the things which need to be taken care of while developing the Decentralized Apps (how to build Decentralized App) are:

  • To monitor the interaction of smart contracts with the Ethereum network, monitoring solutions need to be installed which can support Ethereum Web3 as suitable API for analysis. For instance, Moesif (available on GitHub)
  • DApp must have a user interface for human interaction. UI can be developed on JavaScript, React and with many more coding languages.
  • Smart contracts must be well crafted without any unnecessary logic as you need to pay for every line of codes. So be precise and thoughtful.

Summing Up

Blockchain technology will be expanding its reach in almost every sector for providing the transparent, secured and private network to revolutionise the operations and processes of the particular sector. As the Blockchain will grow, the growth environment for DApps will also become conducive and adoptable by the communities aiming to improve the efficiency along with the customer’s experience. The digital financial world has already started the deployment of DApps in their system to ease out their businesses with all new benefits.

If you are a coder or an enterprise thinking to develop DApp, this guide of how to build Decentralised App can give you the helping hand. Just analyse the market, write down your vision, refresh your knowledge of coding, download the basic installers and the open-source codes from GitHub and give it a shot. You might end up with a DApp which can give an all-new experience to society along with industrial sectors in terms of transparent tamper-proof network with no single point of failure.

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#Build Decentralized App
Tarulika Jain
Tarulika Jain

Tarulika is an engineering graduate and an eloquent crypto blogger. Being a digital economy supporter, she keeps herself updated with the latest innovation in the crypto industry, Blockchain Technology, Internet of Things and other technologies. Currently, she curates the simple and interesting content for Crypto guides for beginners. If you want to learn more about the cryptocurrencies, latest trends of blockchain-powered AI applications, you are free to follow her on LinkedIn and Twitter.