Development of smart contracts for DApp

Decentralized applications, or DApps for short, are applications that use blockchain instead of centralized servers. The internal economy of such projects is based on the use of smart contracts and cryptographic tokens, which ensures maximum transaction transparency and system resistance to various attacks.

Today, DApps are widely used in many areas of business, including finance, gaming, logistics, and even social networks. The interface of centralized and decentralized applications can look almost identical and differ little from the point of view of the end user. Often the difference lies only in their internal structure.

For an application to be considered a DApp, it must meet three main characteristics:

• Open source. The DApp code must be in the public domain. This means that anyone can view, modify, copy or use it for their own purposes. At the same time, any changes to the application system are approved by voting by the participants of the blockchain network.

• Cryptography and decentralization. In order to ensure security, DApp is hosted on a public decentralized blockchain, which is supported by at least a few users, and all application data is protected by cryptography.
• Tokenization. Instead of fiat, DApps use cryptographic tokens that support cryptocurrency, which can also generate native assets using a PoW or PoS consensus algorithm.

The main advantage of DApp over traditional apps is security. They do not store data on centralized servers and do not have a single point of failure, and therefore are less vulnerable to attackers. In addition, DApps give users more control over information because they do not need to reveal their identity to use such an application.

A smart contract is a special software algorithm hosted on the blockchain network that performs the function of a digital analogue of a conventional legal contract. The work of its mechanism is reduced to a simple logic: “if – then”, and triggers the fulfillment of pre-defined conditions.

In DApp, all internal transactions are carried out using smart contracts. Their execution occurs completely automatically, without the need for additional control by third parties, which significantly speeds up transactions, makes them more transparent and cost-effective.

A smart contract must contain the full logic of interaction between the parties to the transaction and provide a high level of security through cryptography. Creating such software is a complex process that involves a whole team of blockchain developers. Consider the main stages of production.

Stage 1. Gathering information

At the first stage, the developers study the task, determine the technical feasibility of the project and build a plan for its implementation. To do this, an interview is conducted with the customer and the characteristics of the decentralized application are analyzed.

Stage 2. Choosing a blockchain

As of 2022, most DApps and smart contracts run on the Ethereum network, which provides a reliable and proven infrastructure for decentralized projects. However, there are many other blockchains on the market, such as BNB Smart Chain, Solana and Polygon, which have their own advantages. Some of them scale better, run faster, and offer better transaction fees.

Stage 3. Choosing tools for development

Different programming languages ​​can be used to develop a smart contract, depending on the chosen blockchain, most often these are Solidity and Rust.

For testing, special test networks are used, such as Rinkeby and Kovan, in which you can deploy the project in isolation and check the correctness of its work in conditions as close as possible to real ones.

Stage 4. Technical development

When the goals, objectives and technology stack of the project are defined, programmers start coding. There are two options here: a smart contract can be written completely from scratch, or you can use special toolkits and patterns that are supplied by the blockchains themselves. For example, if software is developed on the Ethereum network, then specialists can use the OpenZeppelin standard, which will significantly speed up the production process.

Stage 5. Testing

Once a smart contract is deployed on a public blockchain, it is almost impossible to change or destroy it. Even if the DApp team is disbanded, users will be able to continue using the application and smart contracts for their own purposes without any problems.

Therefore, after the development is completed, you need to make sure that the product works completely correctly, and in accordance with the way it was intended. To do this, the smart contract is transferred to the QA department, where it undergoes multi-level testing.

Stage 6: Deployment

The created software is hosted on a public blockchain and made available to end users.

AVADA MEDIA specializes in creating blockchain solutions of any complexity, including smart contracts for decentralized applications. The implementation of each project in our company is carried out by a separate team of developers with experience in working together, which positively affects the speed and quality of the final product. To discuss any issues related to the development of smart contracts, contact us by filling out the feedback form.

To discuss any issues related to the development of smart contracts, contact us by filling out the feedback form.