How to Build a Decentralized Blockchain App Using Ethereum


A decentralized application (Dapp) is a fairly new kind of software, based on a blockchain and peer-to-peer computer networks. A particular implementation Dapps have found in smart contracts. The term “Smart Contract” and its theoretical foundation were laid out by computer scientist Nick Szabo years before appearance of blockchain – in 1996. In the last two years, smart contracts saw a lot of application in spheres not attributed to transactions of electronic money. The most popular and capacitive platform for Dapps development is Ethereum, which allows the creation of smart contacts based on the Ethereum Virtual Machine (EVM).

Ethereum: Overview


Ethereum is an open Blockchain-based cryptocurrency platform that supports the operation of distributed applications, smart contracts specifically. The internal currency of the platform is Ether, which is not only used as a mean of payment but as a guarantee of the smart contracts execution. By using Ethereum, you can create Dapps for the wide variety of financial services. And, as we mentioned above, more and more spheres of application are discovered every month.

It is characteristic that in order to create a new solution on this platform, literally any programming language can be used. Such flexibility was obtained through the use of the EVM, which converts smart contracts into intermediate bytecode and then translates them into the blockchain. In terms of implementation it is more like a Turing machine. A particular advantage of EVM is the fact that it is completely free for use.

As we see, Ethereum has really wide capabilities. To further verify this, take note of the fact that such renowned companies as Microsoft, IBM, and JPMorgan are showing strong interest in Ethereum at the moment.


Ethereum vs. NEO vs. EOS: What to Choose


Today Ethereum is considered as the “model” platform for the creation of decentralized apps, based on the ERC20 technical standard. Nevertheless, its creator – Vitaliy Buterin – is closely pursued by the founders of similar solutions, NEO and EOS. Let us see if these rivals are so strong.

First, let us review the Chinese NEO. The main goal of this platform is the implementation of the blockchain for storing digital content and automating its management through smart contracts. Unfortunately, NEO cannot guarantee any anonymity. Moreover, the creators of this platform present the user authentication as an indispensable condition to use it.

This contradicts the main postulates of the decentralized economy. Ethereum contains Solidity language, specifically designed for the simple creation of smart contracts. In NEO there is no similar solution. Those who wish to create Dapps on the basis of NEO would have to resort to using the general purpose programming languages that originally were not adapted to build Dapps.

As for EOS, this platform, due to its technological superiority – it does not use tokens to conduct actions within the network, employs the Delegated Proof-of-Stake Consensus model, and the number of transactions per seconds (TPS) reaches several thousand, which is quite high compared to Ethereum’s 7 TPS – is rightfully considered a new step in the evolution of the blockchain. Nevertheless, we can not underestimate the fact that EOS is much more centralized than Ethereum: blocks can be added only by 21 players (in Ethereum there are more than 10 thousand) and there is only one implementation of the system (in Ethereum there are four).

Anyway, we can safely say that Ethereum is a tried assistant in the creation of Dapps.


What Programming Language to Choose For an Ethereum-Based Blockchain App?


Now let us start reviewing the languages, most suitable for the Ethereum development procedures in the opinion of experts.


Object-oriented C++ language allows representing the entities, operations performed with them, and their functions, as objects that can be imported from one application to another. This concept stipulates the effective consumption of memory resources and the good readability of the code. Due to the fact that it is possible to write programs on C++ that provide interconnection between large numbers of nodes, this language has become an ideal choice for building such world-famous blockchain platforms as Bitcoin and Ethereum.



Python is an easy-to-learn and time-tested (almost 30 (!) years old) high-level programming language that literally a couple of years ago gained a “second wind” thanks to its ubiquitous use in projects related to machine learning and artificial intelligence. Today, it has found active application in the solutions based on the blockchain technology, allowing to create a concise and highly-readable code.



JavaScript is the most common programming language. It turned out to be useful in case of development of Dapps (which is not surprising, if we recall the famous Atwood law that is only partly a joke: “Any application that can be written in JavaScript will eventually be written in JavaScript”). In particular, with JS, the Lisk project was built (this is the first cryptocurrency created with the help of this language), the capitalization of which exceeds the $3 billion mark. Due to the huge community, you can get qualified and prompt help in the implementation of even the most sophisticated algorithms within your Blockchain app.



This statically typed JS-like language was specifically designed to create smart contracts within EVM. It also uses classes but has a lower entry threshold than Java and C++. In fact, it is an ideal tool for those who are planning to link their future work with the construction of solutions based on the blockchain, since currently there is no other language created specifically for this purpose. This is why we consider Solidity to be the most effective solution in the implementation of Dapps.


The Bottom Line


As you can see, Ethereum platform provides developers with an ideal environment for software development, which would embody the idea of blockchain both inside and outside of the financial markets. Thanks to EVM, absence of restrictions in the choice of development languages, open source distribution model, and ease of use, Ethereum has become a subject of interest of the world famous software vendors. If you also think that this platform will be the ideal basis for your future software solution, and are in search of good specialists for its implementation, we will happily take these responsibilities upon ourselves!

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