Smart contracts - code that executes itself
The concept of smart contracts appeared as early as the 90s, but it was only with the development of Ethereum that it took on a practical dimension. Smart contracts were the answer to the need to automate processes without the involvement of intermediaries. As a result, they made it possible to conclude contracts that were performed independently after meeting certain conditions.
Smart contracts are essentially self-executing protocols written directly into the blockchain code. Their substantive value lies in the establishment of a performance guarantee. If the conditions written in the code are met (e.g. a deadline expires, one of the parties sends cryptocurrencies), then the actions specified in the contract (e.g. withdrawal of funds, change of ownership of an asset) are automatically and executed by the Ethereum network. This principle can be expressed as "if A, then B", where A is the fulfillment of the condition, and B is the resulting action. As a result, they eliminate the need to trust traditional intermediaries such as a bank. The code is right, and its execution is transparent and verifiable by every participant in the network. Which is a fundamental feature that allows you to build an entire decentralized financial ecosystem.
Developers quickly saw the potential of this technology for deploying decentralized finance applications and voting systems. The development of developer tools has accelerated the adoption of smart contracts on a global scale. According to data from the Dune Analytics platform, the number of unique smart contracts deployed on Ethereum exceeded 4 million already in 2023.
The increasing complexity and risks associated with code bugs have made education crucial for cryptocurrency market participants. Access to expertise has proven essential not only for developers, but also for investors and users of decentralized financial services. For this reason, Webinar Universe training helps you gain competencies in smart contract security analysis and the practical application of this innovation.
Ethereum Virtual Machine - the heart of decentralized applications
Ethereum Virtual Machine has functioned since the beginning of the network as a runtime environment for all operations carried out by smart contracts. EVM provided uniform operating rules regardless of the type of device and the location of the network participant. This ensured that every interaction remained predictable and tamper-proof.
The EVM architecture now allows for advanced computing and integration with a wide range of development tools available globally. This allows for quick implementation of new functionalities and testing of innovative solutions while maintaining a high level of data security. Understanding how EVM works is considered one of the three pillars of effective blockchain science:
- Learning the principles of runtime functioning.
- Learning to create and test your own smart contracts.
- Apply knowledge to performance analysis and identify potential threats.
The practical use of these skills is supported by an educational platform, which offers comprehensive online training for people who want to develop careers in the Web3 industry.
Gas and fees - the economics of the network
From the beginning, the Ethereum network operated on the basis of a fee mechanism referred to as "gas". This model allowed for precise accounting of resources consumed by transactions and smart contracts. Each operation required a certain number of gas units, and the cost of using them was covered in the ETH cryptocurrency. This system protected against network overload and ensured a fair distribution of computing power.
The amount of fees changes dynamically depending on the current demand for transaction processing. At the moments of the highest intensity of user activity, the price of gas increased even tens of times, which resulted in high costs of using decentralized applications. This phenomenon was particularly exacerbated during the surge in popularity of NFTs and DeFi in 2021. According to global data, the average transaction fee then reached over $60.
Ethereum's economics have forced the need to constantly search for optimization. Mechanisms such as EIP-1559 were introduced, which modified the way fees were calculated and partially "burned" them, limiting the supply of ETH. These innovations were designed to increase cost predictability and improve the user experience. However, even modern solutions have not completely eliminated the problem of high gas prices during peak network loads.
Scalability and Layer Two Solutions - The Road to Efficiency
The limited bandwidth of the Ethereum mainnet has long remained one of the key technological challenges of this ecosystem. In practice, this meant the creation of transaction queues and an increase in the cost of operating smart contracts with high user interest. Scaling has become an essential direction of development for both financial app developers and investors looking for effective market tools.
In response, so-called Layer 2 solutions appeared, including, m.in: optimistic rollups, zero-knowledge rollups or sidechains compatible with the Ethereum Virtual Machine. These technologies have made it possible to move much of the processing outside of the underlying blockchain without sacrificing security or decentralization. For those who want to develop competencies in this field, Webinar Universe training has proven to be a valuable option, allowing them to explore the topic of blockchain scaling.
The effect of implementing Layer 2 was a significant increase in the efficiency of the entire ecosystem. The number of transactions per second that can be carried out has increased many times over, while unit costs of operations have decreased. It is worth distinguishing three key consequences of the use of these solutions:
- Increasing the availability of decentralized applications for new user groups.
- Minimize barriers to entry with lower fees.
- Build more advanced financial products without the risk of overloading your main network.
The rapidly growing number of projects using Layer 2 technology has highlighted the need for blockchain investors and developers to keep their knowledge up to date. Only regular online learning makes it possible to keep up with the pace of technological change in the global cryptocurrency markets.
Ethereum, with its architecture powered by the Ethereum Virtual Machine, has revolutionized blockchain technology by introducing self-executing smart contracts as the foundation of decentralized applications. Despite the initial challenges of high gas charges during peak periods, the network continues to strive for efficiency through innovations such as EIP-1559. Today, Layer 2 solutions significantly increase scalability and availability, minimizing transaction costs. Understanding EVM, the economics of networking, and new scaling technologies is crucial for anyone who wants to effectively harness the potential of this "machine of the world."