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The Complete Guide to Blockchain App Development

Blockchian app development

From Idea to Deployment: The Complete Guide to Blockchain App Development

Blockchain App Development

Blockchain technology has brought about a new era of software development that offers unique advantages to businesses looking to build decentralized applications. In this article, we will explore what blockchain apps are, how they differ from traditional apps, and the challenges of building them. We will also discuss choosing the right blockchain network, the importance of a skilled development team, and best practices for onboarding users and deploying blockchain apps.

What’s blockchain?

Blockchain is a distributed ledger that enables the creation of applications that can store and modify data in a decentralized environment. The key benefits of blockchain technology are its immutability and the ability to operate programs that store data. Blockchain can be either public or private, but in this article, we will focus mainly on developing apps for a public blockchain.

What’s a blockchain app?

A blockchain app is an application that runs on a decentralized network, utilizing all the benefits of blockchain technology. The app can store and modify data that is also stored in the blockchain. Because of the unique perks of blockchain technology, blockchain apps offer several advantages over traditional apps, which we will explore in the next section.

How are blockchain apps different from “non-blockchain” apps?

Blockchain apps differ from traditional apps in several ways:

  • Blockchain apps are immutable, meaning the deployed version cannot be changed. Everything you will deploy will stay there and will be visible to anyone. Even if in the future you will update the version of your app - this fact will also be stored in the blockchain, and the original version will still be there
  • In the public blockchain, data, and programs are publicly available, with no way to hide them. 
  • Blockchain apps have an asynchronous nature, which means that data can be transmitted and processed independently of time constraints or a centralized authority and there is only one deployment to the whole network. 

Blockchain app development: before you start

Before you start developing your blockchain app, it is essential to verify that your idea is implementable in a blockchain environment. Ensure you have a CTO who understands blockchain technology and builds clear documentation or a whitepaper to guide your development team on expected results. Check if the network you have chosen is right for you, and if you have a team skilled in the language you choose.

Blockchain app development: the network

Choosing the right network is crucial to the success of your blockchain app. Factors to consider include the cost of transactions, maximum throughput, network security and safety, centralized vs. decentralized, and Layer 1 vs. Layer 2. Verify the existence of the protocols and tools you need to integrate with and check if there is a good TestNet in the context of the protocols you want to integrate. Finally, verify the roadmap and maturity of the network.

Choosing the right dev team

Choosing the right development team is critical to the success of your blockchain app. Ensure that your team knows the language you chose to develop your app and has experience implementing apps on the blockchain you chose. Ensure your team has a strong leader with a solid understanding of how blockchain works.

Challenges of blockchain app development

Developing apps in a blockchain environment comes with unique challenges. Some of these include the immutability of data and applications, limited TPS, complex error management, expanded security and safety model, complex and long smart contract audit procedures, lack of documentation (or outdated documentation) of the libraries and protocols you depend on, structuring your data in smart contracts (which can be limited and expensive), the possibility to expose sensitive data, difficult monitoring of applications' health, and limited impact on the network health.

Users onboarding

Onboarding users to your blockchain app requires careful consideration of appropriate approaches to establish user wallets, ensuring the KYC process when necessary, making sure users are mature enough to understand the usage of third-party wallet providers, and staying eligible with the law.

Applications security

Security is a crucial aspect of blockchain app development. In a decentralized environment, security and safety must be built into the app's design and protocol itself, rather than relying on external measures such as firewalls or access control lists. To ensure the security and safety of your blockchain app, it's essential to follow the network specifications you choose and be aware of any new EPI that may affect your code.


Additionally, reviewing your code against newly discovered language weaknesses and maintaining up-to-date documentation of the libraries and protocols you depend on is important. Structuring your data in smart contracts can also be challenging for blockchain app development, as it can be limited and expensive. Careful consideration should be given to structuring your data to balance efficiency and security.


Finally, deploying your blockchain app requires proper private key management and a multi-sig approach. This approach can help ensure that multiple parties are required to sign off on a transaction, reducing the risk of unauthorized access or theft. By following best practices for blockchain app security, your business can provide your customers with a secure, transparent, and decentralized solution to their needs.

In conclusion, blockchain technology offers a unique approach to software development, providing businesses with secure, transparent, and decentralized solutions for a wide range of use cases. As explored in this article, building blockchain apps has unique advantages and challenges, such as immutability, limited TPS, complex error management, and expanded security and safety models. To ensure success, choosing the right network and development team, following best practices for onboarding users, and deploying your blockchain app is crucial. By leveraging the benefits of blockchain technology and carefully planning and executing your blockchain app development, your business can stay ahead of the curve and provide innovative solutions for your customers.

By Seweryn OstrowskiApril 2023


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