update 17 October 2021

Understanding Ethereum’s Solidity Programming Language

Ethereum is a cryptocurrency capable of storing value and making payments. However, that’s not all. It is also a fully-fledged platform for creating smart contracts, and this is where Solidity comes in. Solidity is a high-level language for implementing smart contracts. It gets its inspiration from C++, Python, and JavaScript and should target the Ethereum Virtual Machine (EVM).

This article will uncover all about the Solidity programming language and how it works. But first, we’ll look closer at the Ethereum Virtual Machine because it is a significant part of Solidity use on Ethereum.

What Is the Ethereum Virtual Machine (EVM)?

EVM is a virtual stack that each Ethereum node contains through integration and which carries out a contract bytecode. Furthermore, the EVM is a complete Turing system that allows for the performance of any computational functions.

It forms a crucial element of the Ethereum protocol, which enables the achievement of a consensus. Smart contracts reach this agreement in the protocol. Furthermore, it is essential for Ethereum’s economic design. While Bitcoin pays for a transaction, Ethereum charges for the execution of software instructions.

The gas mechanism in Ethereum lets users pre-pay for the instructions they want to execute on the EVM using Ether, its native currency.

History of Solidity: from v0.1.0 to the Future

Dr. Gavin Wood, Ethereum’s first CTO, presented Solidity in 2014. Next, Christian Reitwiessner led a team of engineers who expanded the project. At the time of writing, Solidity is about seven years old. And, the core team of the Ethereum Foundation has a large community of supporters. Additionally, numerous contributors continue to aid in its development. Above all, they do this through commitments, error reports, and addressing issues on GitHub and beyond.

The first version came out under the name of v0.1.0. Since then, the developers have made several enhancements, and iterations have been made.

Solidity was conceived to reduce the entry barrier to Ethereum. It means that smart contracts must be the most straightforward to use. In the beginning, Solidity contracts had qualities with such objectives as syntax similar to JavaScript. In the language, there were evident compromises to make it easy to use.

As time went by, the issue of security came by hence changing their priority. More protection over ease of use was added and has evolved to what it is now to prevent the manipulation of smart contracts.

How Does Solidity Work?

It is impressive that so many cryptocurrencies and decentralized applications can use the Ethereum ecosystem. Furthermore, smart contracts make it possible for different companies and organizations to build unique innovations on Ethereum.

The world spends billions of dollars annually on blockchain solutions. Many of these are Solidity solutions. Smart contracts running on Solidity are similar to the means of automating business among people. This means that those who conduct blockchain transactions do not need to be cautious about fraud or using the same currency.

EVM is one of the essential features which make it possible to execute solidity programming. Solidity produces machine code under the hood, which operates on the EVM. A compiler breaks down highly understandable human code and translates it into instructions the processor reads.

Different systems offer a free compilation of Solidity, including the online compiler Remix and a command-like compiler downloaded on a PC.

EVM smart contracts have some constraints that developers must handle. One of the most important is the limited access to helpful library functions for parsing JSON formats or floating-point arithmetic.

Gas Costs

The Ethereum mainnet charges additional charges for using Solidity. Some of the additional costs are based on the Ethereum gas mechanism, which requires payment to miners to secure the blockchain network.

While developing smart contracts, one should know that gas costs can affect how efficient a smart contract is. As users pay gas rates for each storage slot, the Solidity Code measures the overall cost of gas. Therefore, it is unlikely in the longer term that they will run an expensive smart contract.

When the solidity code executes, gas optimization helps to reduce gas costs. The use of libraries and fewer functions are some of the most prevalent gas optimization strategies. Often libraries are helpful for bytecode saving.

Developers can place the logic in libraries instead of introducing an unnecessary bytecode to the smart contract. This helps keep the wise contract size minimal. This way, fewer functions require less bytecode, which decreases the auditing effort.

How to Use Solidity in Ethereum?

For fungible and non-fungible tokens (NFTs), Solidity is necessary for establishing smart contracts. The creation of the two tokens inside the Ethereum ecosystem is subject to several standards.

This enables the creation of many types of usage cases for people using the blockchain. Solidity allows people to deploy Ethereum tokens and non-fungible tokens. Ethereum enables numerous kinds of tokens, from non-fungible tokens to yield farming pools for extra interest.

Solidity is also made viable by Decentralized Autonomous Organizations (DAOs). These online structures rely on Solidity for a scripting language. As members of an online platform, DAOs enable various people to decide on the DAO’s development.

Solidity enables processes within the DAO to be automatic. Examples of DAO process automation include voting for crucial decisions and allocating DAO members’ reputations for their group efforts.


Solidity is not the only language on Ethereum. Other languages such as Serpent can also be part of the bytecode in the Ethereum Virtual Machine. While Serpent and the other “EVM compliable” languages do not fall within this article, it is noteworthy that each has essentially the same function, creating EVM bytecode that developers can execute on network nodes.

Solidity is far more than the language of programming. It sets rules for blockchain technology’s Future.

price change

Thousands of apps on the Ethereum ecosystem continue to rely on it to operate. Consequently, many open source developers are seeking to improve Solidity’s safety and performance. When new standards for smart contracts are created in Ethereum, the language becomes safer to use.

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