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Sergey B., web3 Developer

Last Updated: 17 Aug 2023

- Full Stack Developer with strong Blockchain skills. - 10+ years of experience in IT. - 4+ years of experience with Blockchain. - In-depth knowledge of blockchain integration to the backend. - Upper-Intermediate English. - Available ASAP.

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AWS (Amazon Web Services)

AWS (Amazon Web Services)

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Vincent, web3 Developer

Lyon, France
Last Updated: 3 Jun 2024

- Position: Project Manager (PM) with Knowledge of French - Educational Background: Master's degree from IAE Lyon, with specialization in international business development, strategic management, and marketing. - Project Management Experience: Managed engineering vehicle projects and marketing initiatives at renowned companies such as Daimler AG, Renault Group, and PSA Group. - Strategic Insights: Coordinated strategic projects focused on customer satisfaction across markets and headquarters. - Market Analysis Expertise: Conducted an in-depth study of the German automotive insurance market. - Technical Proficiency: Analyzed vehicle development projects and processes, ensuring alignment with organizational objectives. - Native French - Fluent English

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Project Management

Project Management

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Demyd G, web3 Developer

Kharkiv, Ukraine
Last Updated: 4 Jul 2023

- Senior software developer with about 7 years of experience - Web applications for crypto finance (including wallet for Ethereum using ether.js (deposit, withdrawal, staking operations) and web3.js (connect Metamask, get balance, withdraw and deposit tokens) - Maintaining web applications with Front-end jQuery, Vue.js, React.js, React Native, Angular.JS, Angular 2+ and PHP Laravel, WordPress - Hands-on experience of both working as a single developer and being a part of big Agile teams.

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Oleksii, web3 Developer

Last Updated: 26 Jun 2024
Identity Verified
Language Verified
Programming Skills Verified
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- 10+ years of experience in web development, M.Sc in Software Engineering - Mastery of JavaScript and its associated frameworks and libraries, such as React, Angular, and Vue.js for front-end; Node.js, Next.js for back-end and React Native for mobile app development. - Experience with PHP and Cloud infrastructure such as AWS. - Proficiency in using version control systems (e.g., Git) and familiarity with DevOps practices for continuous integration and deployment (CI/CD). - Implementing and overseeing testing processes, including unit testing, integration testing, and end-to-end testing. - Experience leading and mentoring a team of developers, including assigning tasks, providing guidance, and ensuring the team's success. Ability to motivate and inspire team members, resolve conflicts, and provide constructive feedback. - Experience conducting assessments and interviews remotely.

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JavaScript   8 yr.


React   8 yr.


TypeScript   5 yr.


Node.js   5 yr.


Next.js   3 yr.

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Vitalii I., web3 Developer

Last Updated: 9 Feb 2024

- With over 12 years of growth marketing experience and 4+ years of specializing in web3 companies, brings hands-on expertise across diverse crypto verticals including exchanges, online casinos, crypto products, b2b solutions, and P2E gaming. - Data-driven marketing strategies have delivered proven results for blockchain startups and web3 companies targeting key geographies like the USA, Europe, China, Philippines, former Soviet Union countries, the UK, Australia, Canada, the specializing Middle East, and Scandinavia. - As a strategic marketing leader, exceling at capturing attention, building trust, and accelerating revenue across these global markets. - Analytical approach couples creative thinking with rigorous optimization across acquisition channels, empowering brands to scale strategically. - Collaboration with multiple blockchain projects double their business, increase revenue by millions, and rapidly grow users in target regions through my nuanced understanding of local cultures and buyer mindsets.

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Data Scraping

Data Scraping

NFT marketplace

NFT marketplace

Marketing research

Marketing research

Marketing strategies

Marketing strategies

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Upstaff.com was launched in 2019, addressing software service companies, startups and ISVs, increasingly varying and evolving needs for qualified software engineers

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Based on 9 reviews
Vitalii Stalynskyi August 29, 2023

I have been working with Upstaff for over a year on a project related to landscape design and management of contractors in land design projects. During the project, we have done a lot of work on migrating the project to a multitenant architecture and are currently working on new features from the backlog.When we started this project, the hiring processes were organized well. Everything went smoothly, and we were able to start working quickly. Payments always come on time, and there is always support from managers. All issues are resolved quickly.Overall, I am very happy with my experience working with Upstaff, and I recommend them to anyone looking for a new project. They are a reliable company that provides great projects and conditions. I highly recommend them to anyone looking for a partner for their next project.

Henry Akwerigbe August 30, 2023

This is a super team to work with. Through Upstaff, I have had multiple projects to work on. Work culture has been awesome, teammates have been super nice and collaborative, with a very professional management.There's always a project for you if you're into tech such Front-end, Back-end, Mobile Development, Fullstack, Data Analytics, QA, Machine Learning / AI, Web3, Gaming and lots more.It gets even better because many projects even allow full remote from anywhere!Nice job to the Upstaff Team 🙌🏽.

Roman Masniuk August 25, 2023

I worked with Upstaff engineers for over 2 years, and my experience with them was great. We deployed several individual contributors to clients' implementations and put up two teams of upstaff engineers. Managers' understanding of tech and engineering is head and shoulders above other agencies. They have a solid selection of engineers, each time presented strong candidates. They were able to address our needs and resolve things very fast. Managers and devs were responsive and proactive. Great experience!

Volodymyr August 11, 2023

Leaving a review to express how delighted I am to have found such a great side gig here. The project is intriguing, and I'm really enjoying the team dynamics. I'm also quite satisfied with the compensation aspect. It's crucial to feel valued for the work you put in.Overall, I'm grateful for the opportunity to contribute to this project and share my expertise. I'm thrilled to give a shoutout and recommendation to anyone seeking an engaging and rewarding work opportunity.

Maryna Navo September 25, 2023

Крутий сервіс, зручна комунікація. Допомогли з закриттям мого питання на 200%

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FAQs about web3 Development

How do I hire a web3 developer? Arrow

If you urgently need a verified and qualified web3 developer, and resources for finding the right candidate are lacking, Upstaff is exactly the service you need. We approach the selection of web3 developers professionally, tailored precisely to your needs. From placing the call to the completion of your task by a qualified developer, only a few days will pass.

Where is the best place to find web3 developers? Arrow

Undoubtedly, there are dozens, if not hundreds, of specialized services and platforms on the network for finding the right web3 engineer. However, only Upstaff offers you the service of selecting real qualified professionals almost in real time. With Upstaff, software development is easier than calling a taxi.

How are Upstaff web3 developers different? Arrow

AI tools and expert human reviewers in the vetting process are combined with a track record and historically collected feedback from clients and teammates. On average, we save over 50 hours for client teams in interviewing web3 candidates for each job position. We are fueled by a passion for technical expertise, drawn from our deep understanding of the industry.

How quickly can I hire web3 developers through Upstaff? Arrow

Our journey starts with a 30-minute discovery call to explore your project challenges, technical needs, and team diversity. Meet Carefully Matched web3 Talents. Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person. Validate Your Choice. Bring a new web3 developer on board with a trial period to confirm that you’ve hired the right one. There are no termination fees or hidden costs.

How does Upstaff vet remote web3 engineers? Arrow

Upstaff Managers conduct an introductory round with potential candidates to assess their soft skills. Additionally, the talent’s hard skills are evaluated through testing or verification by a qualified developer during a technical interview. The Upstaff Staffing Platform stores data on past and present web3 candidates. Upstaff managers also assess talent and facilitate rapid work and scalability, offering clients valuable insights into their talent pipeline. Additionally, we have a matching system within the platform that operates in real-time, facilitating efficient pairing of candidates with suitable positions.

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Table of Contents

TOP 15 Facts about web3

Facts about
  • Web3 is the next generation of the internet, which aims to create a decentralized and user-centric online ecosystem. It utilizes blockchain technology and cryptographic protocols to enable peer-to-peer interactions without the need for intermediaries.
  • Blockchain is a fundamental technology underlying web3. It is a distributed ledger that records transactions across multiple computers, making it immutable and transparent.
  • Web3 introduces the concept of smart contracts, which are self-executing agreements written in code. Smart contracts automatically facilitate, verify, and enforce the terms of an agreement, eliminating the need for intermediaries.
  • With web3, users have full control over their data and digital identities. They can securely manage and monetize their personal information without relying on centralized platforms.
  • Web3 enables decentralized applications (dApps) to run on the blockchain. These dApps operate on a peer-to-peer network, providing increased security, transparency, and censorship resistance.
  • Decentralized finance (DeFi) is a prominent use case of web3. DeFi platforms leverage blockchain technology to offer financial services such as lending, borrowing, and trading without the involvement of traditional intermediaries like banks.
  • Web3 promotes interoperability, allowing different blockchain networks and dApps to communicate and share data seamlessly. This interoperability enhances the overall functionality and user experience of decentralized applications.
  • Web3 aims to address privacy concerns by giving users control over their personal data. It provides mechanisms for selective disclosure and consent management, ensuring that users have ownership and agency over their digital footprint.
  • The decentralized nature of web3 makes it highly resistant to censorship. It empowers individuals to freely express themselves, share information, and access content without the fear of being silenced or restricted by centralized authorities.
  • Web3 is revolutionizing the gaming industry by introducing play-to-earn models. Players can earn cryptocurrencies and digital assets by participating in blockchain-based games, creating new economic opportunities within the gaming ecosystem.
  • Web3 is driving innovation in supply chain management by ensuring transparency and traceability. Through blockchain technology, the movement of goods and services can be tracked in real-time, reducing fraud and enhancing efficiency.
  • Web3 has the potential to revolutionize the healthcare industry by enabling secure and interoperable electronic health records. Patients can have full control over their medical data, granting access to healthcare providers on a need-to-know basis.
  • Web3 promotes decentralized governance models, enabling community-driven decision-making. This allows stakeholders to actively participate in the development and direction of decentralized platforms, fostering a more democratic and inclusive online environment.
  • Web3 is driving the tokenization of assets, enabling fractional ownership and liquidity. Real estate, art, and intellectual property can be represented as digital tokens, democratizing access to traditionally illiquid assets.
  • Web3 has the potential to revolutionize voting systems by providing secure and transparent elections. Blockchain-based voting platforms can ensure the integrity of the voting process, preventing fraud and enhancing trust in democratic systems.


Soft skills of a web3 Developer

Soft skills

Soft skills of a web3 Developer:


  • Communication: Ability to effectively communicate with team members and stakeholders to understand and convey requirements and project updates.
  • Adaptability: Willingness to learn and adapt to new technologies and frameworks in the rapidly evolving web3 space.
  • Problem-solving: Ability to analyze and troubleshoot technical issues to ensure smooth functioning of web3 applications.
  • Time management: Efficiently managing time and prioritizing tasks to meet project deadlines.
  • Teamwork: Collaborating with team members to achieve project goals and deliver high-quality web3 solutions.


  • Leadership: Demonstrating leadership skills by guiding and mentoring junior developers in the web3 development process.
  • Critical thinking: Applying logical and analytical thinking to solve complex problems and make informed decisions.
  • Project management: Ability to manage multiple projects simultaneously, ensuring timely delivery and adherence to project requirements.
  • Client management: Building and maintaining strong relationships with clients, understanding their needs, and providing satisfactory solutions.
  • Attention to detail: Paying close attention to details to ensure accuracy and quality in web3 development projects.
  • Collaboration: Working closely with cross-functional teams, such as designers and product managers, to deliver cohesive web3 solutions.
  • Continuous learning: Proactively seeking opportunities to enhance knowledge and skills in web3 technologies through self-study and professional development.


  • Strategic thinking: Developing long-term plans and strategies to drive innovation and growth in web3 development.
  • Mentorship: Mentoring and guiding junior and middle-level developers to foster their professional growth in the web3 domain.
  • Conflict resolution: Resolving conflicts and managing disagreements within the team to maintain a harmonious work environment.
  • Client engagement: Engaging with clients at a strategic level, understanding their business objectives, and providing innovative solutions.
  • Quality assurance: Implementing quality assurance processes and best practices to ensure high-quality web3 applications.
  • Decision-making: Making informed decisions based on comprehensive analysis and evaluation of various factors.
  • Business acumen: Understanding the business aspects of web3 development and aligning technical solutions with organizational goals.
  • Innovation: Driving innovation by exploring new technologies and approaches in web3 development.

Expert/Team Lead

  • Team management: Overseeing the work of the development team, assigning tasks, and ensuring efficient collaboration.
  • Strategic planning: Developing strategic plans and roadmaps for web3 projects, considering market trends and business goals.
  • Risk management: Identifying and mitigating potential risks and challenges in web3 development projects.
  • Thought leadership: Demonstrating expertise and thought leadership in the web3 domain through publications, speaking engagements, and industry contributions.
  • Stakeholder management: Effectively managing relationships with stakeholders, including clients, executives, and external partners.
  • Performance optimization: Optimizing the performance of web3 applications by implementing best practices and performance monitoring techniques.
  • Continuous improvement: Driving continuous improvement initiatives to enhance the efficiency and effectiveness of web3 development processes.
  • Strategic partnerships: Establishing strategic partnerships with industry leaders and key players in the web3 ecosystem.
  • Technical expertise: Demonstrating deep technical knowledge and expertise in web3 technologies, such as blockchain, decentralized finance (DeFi), and smart contracts.
  • Thoughtful decision-making: Making strategic and thoughtful decisions that align with the overall vision and goals of the organization.
  • Emotional intelligence: Understanding and managing emotions effectively, fostering positive relationships, and promoting a healthy work environment.


What are top web3 instruments and tools?

Instruments and tools
  • Metamask: Metamask is a popular web3 wallet and browser extension that allows users to manage their cryptocurrencies and interact with decentralized applications (dApps) on the Ethereum blockchain. It was launched in 2016 and has gained widespread adoption among the Ethereum community. Metamask provides a secure and user-friendly interface for users to seamlessly connect their wallets and interact with dApps without the need for running a full Ethereum node.
  • Truffle: Truffle is a development framework for Ethereum that provides developers with a suite of tools for building and testing smart contracts. It was first released in 2015 and has since become one of the most widely used frameworks in the Ethereum ecosystem. Truffle simplifies the process of compiling, deploying, and testing smart contracts, making it easier for developers to build decentralized applications.
  • Ganache: Ganache is a personal blockchain for Ethereum development, primarily used for testing and debugging smart contracts. It allows developers to create a local Ethereum network with predefined accounts and test transactions without the need for interacting with the main Ethereum network. Ganache provides a user-friendly interface and supports features like contract debugging and transaction visualization, making it an essential tool for Ethereum developers.
  • Embark: Embark is a framework for developing decentralized applications on the Ethereum blockchain. It provides a simple and intuitive interface for deploying smart contracts, building front-end interfaces, and writing tests. Embark supports various development environments and offers features like automatic contract deployment, built-in decentralized storage, and integration with other popular tools such as IPFS and Swarm.
  • Infura: Infura is a scalable and reliable infrastructure provider for decentralized applications. It allows developers to connect to the Ethereum network without the need for running their own Ethereum node. Infura provides a simple API that enables developers to interact with the Ethereum blockchain and deploy their applications at scale. It has become a crucial component of many web3 applications, providing reliable access to the Ethereum network.
  • IPFS: IPFS (InterPlanetary File System) is a decentralized file storage protocol that aims to replace the traditional client-server model with a distributed and peer-to-peer network. IPFS allows users to store and retrieve files in a decentralized manner, ensuring data integrity and availability. It has gained popularity in the web3 space as a solution for decentralized storage and content addressing.
  • Etherscan: Etherscan is a blockchain explorer and analytics platform for the Ethereum network. It provides users with a comprehensive view of the Ethereum blockchain, including transaction history, smart contract verification, token information, and address balances. Etherscan is widely used by developers, traders, and enthusiasts to explore and analyze the Ethereum ecosystem.


TOP 10 web3 Related Technologies

Related Technologies

TOP Facts

  • JavaScript

    JavaScript is the most fundamental language for web development. It is widely used for building dynamic and interactive web applications. With the rise of web3, JavaScript has become even more crucial, as it is compatible with blockchain platforms like Ethereum and Polkadot. It offers a vast ecosystem of libraries and frameworks, making it a versatile choice for web3 software development.

  • Solidity

    Solidity is a programming language specifically designed for writing smart contracts on the Ethereum blockchain. It is essential for web3 development, as smart contracts are the backbone of decentralized applications (DApps) and decentralized finance (DeFi) platforms. Solidity’s syntax is similar to JavaScript, making it easier for JavaScript developers to transition into web3 development.

  • Web3.js

    Web3.js is a JavaScript library that provides an interface for interacting with Ethereum and other web3-compatible blockchains. It simplifies the process of connecting to blockchain networks, sending transactions, and retrieving data from smart contracts. Web3.js is widely adopted and regularly updated, making it an indispensable tool for web3 software development.

  • React

    React is a popular JavaScript library for building user interfaces. It is widely used in web development, including web3 software development. React’s component-based architecture and virtual DOM make it efficient and scalable. Many web3 projects leverage React to create intuitive and responsive user interfaces for decentralized applications.

  • Truffle

    Truffle is a development framework for Ethereum-based DApps. It provides a suite of tools, including a smart contract compiler, automated testing, and deployment scripts. Truffle simplifies the development and deployment process, enabling developers to focus on building decentralized applications rather than managing infrastructure.

  • IPFS

    IPFS (InterPlanetary File System) is a decentralized file storage protocol that forms the backbone of web3’s decentralized infrastructure. It allows for the storage and retrieval of files in a distributed manner, ensuring data availability and resilience. IPFS is commonly used in web3 development to store files, such as images, documents, and media assets, in a decentralized and censorship-resistant manner.

  • Ganache

    Ganache is a personal blockchain emulator for Ethereum development. It provides a local development environment that simulates the behavior of a real Ethereum network. Developers can use Ganache to test and debug their smart contracts before deploying them to the live Ethereum network. Ganache’s simplicity and ease of use make it a popular choice among web3 developers.


Let’s consider Difference between Junior, Middle, Senior, Expert/Team Lead developer roles.

Seniority NameYears of experienceResponsibilities and activitiesAverage salary (USD/year)
Junior0-2 yearsAssisting senior developers in coding, testing, and debugging software applications. Participating in code reviews and learning best practices. Developing basic software features and functionalities under supervision.$50,000 – $70,000
Middle2-5 yearsDesigning, coding, testing, and debugging software applications. Collaborating with cross-functional teams to analyze requirements and deliver high-quality solutions. Mentoring junior developers and providing technical guidance. Taking ownership of small to medium-sized projects.$70,000 – $90,000
Senior5-10 yearsLeading the design and development of complex software systems. Providing technical expertise and guidance to the team. Collaborating with stakeholders to define project goals and requirements. Mentoring and coaching junior and middle developers. Ensuring code quality, performance, and scalability.$90,000 – $120,000
Expert/Team Lead10+ yearsManaging a team of developers and leading software projects. Architecting and designing highly scalable and robust solutions. Setting technical direction and driving innovation. Collaborating with stakeholders to align technology strategies with business goals. Mentoring and developing team members. Ensuring code quality, performance, and timely delivery of projects.$120,000 – $150,000+


How and where is web3 used?

How and where
Case NameCase Description
Decentralized Finance (DeFi)Web3 development has revolutionized the financial industry through the concept of decentralized finance (DeFi). DeFi enables individuals to access financial services without the need for intermediaries such as banks. With smart contracts and blockchain technology, users can engage in activities like lending, borrowing, and trading digital assets in a more secure and transparent manner. DeFi has the potential to provide financial services to the unbanked population, reduce transaction costs, and eliminate the need for traditional banking infrastructure.
Supply Chain ManagementWeb3 development has transformed supply chain management by introducing transparency and traceability into the process. By leveraging blockchain technology, each step of the supply chain can be recorded and verified, ensuring the authenticity and provenance of products. This helps in preventing counterfeiting, improving quality control, and increasing trust between different entities involved in the supply chain. Web3 solutions also enable real-time tracking of shipments, reducing delays and optimizing logistics.
Decentralized IdentityWeb3 development has tackled the issue of digital identity by enabling decentralized identity solutions. Traditional identity systems rely on centralized authorities, making them vulnerable to data breaches and identity theft. Web3 technologies allow individuals to have full control over their personal information and selectively share it with trusted parties. This enhances privacy, security, and eliminates the need for multiple usernames and passwords across different platforms.
Content Distribution and Copyright ProtectionWeb3 development offers innovative solutions for content creators and copyright protection. Through blockchain-based platforms, creators can directly distribute their content to consumers, eliminating the need for intermediaries and reducing revenue loss. Additionally, blockchain technology enables the creation of immutable records of ownership and authenticity, making it easier to prove ownership and protect intellectual property rights.
Voting and GovernanceWeb3 development has the potential to revolutionize voting and governance systems by introducing transparency, immutability, and security. Through blockchain-based voting platforms, the integrity of the voting process can be ensured, preventing fraud and manipulation. Web3 technologies also enable decentralized governance models, where decisions are made collectively by participants, reducing the influence of centralized authorities and promoting inclusivity.
Energy Trading and Grid ManagementWeb3 development has enabled the creation of decentralized energy trading platforms, where individuals can buy and sell energy directly from each other. This eliminates the need for traditional energy intermediaries and allows for peer-to-peer energy transactions. Furthermore, web3 solutions can optimize grid management by leveraging smart contracts and IoT devices, enabling more efficient energy distribution and reducing wastage.
Healthcare Data ManagementWeb3 development has the potential to revolutionize healthcare data management by ensuring privacy, interoperability, and security. Through blockchain-based solutions, patients can have control over their health data, selectively sharing it with healthcare providers, researchers, and insurers. This improves data accuracy, reduces administrative burdens, and enhances patient-centric care. Additionally, blockchain technology can facilitate the secure sharing of medical records between different healthcare organizations, improving care coordination and patient outcomes.
Decentralized Social MediaWeb3 development has introduced the concept of decentralized social media platforms, where users have control over their data and decision-making processes. These platforms provide alternatives to traditional social media giants by eliminating data privacy concerns and enabling users to directly benefit from their content contributions. Web3 social media platforms aim to create a more democratic and censorship-resistant online environment.


Pros & cons of web3

Pros & cons

7 Pros of web3

  • Increased decentralization: Web3 technology allows for a more decentralized internet, reducing reliance on centralized authorities and giving users more control over their data and online interactions.
  • Enhanced privacy and security: With web3, users have more control over their personal data and can choose when and how to share it. This provides a higher level of privacy and security compared to traditional web technologies.
  • Improved transparency: Web3 utilizes blockchain technology, which provides a transparent and immutable ledger of transactions. This transparency can foster trust and accountability in various industries, such as finance and supply chain management.
  • Empowering individuals: Web3 enables individuals to have direct ownership and control over their digital assets, such as cryptocurrencies and non-fungible tokens (NFTs). This empowers individuals to participate in new forms of digital economies.
  • Interoperability across platforms: Web3 aims to create a more interoperable internet, allowing different blockchain networks and decentralized applications (dApps) to communicate and share data seamlessly. This can promote collaboration and innovation.
  • Reduced censorship and information control: Web3 technologies can help mitigate censorship and information control, as content and applications are distributed across a decentralized network. This can foster freedom of speech and access to information.
  • Opportunities for innovation: Web3 opens up new possibilities for developers and entrepreneurs to create innovative applications and business models. The decentralized nature of web3 allows for experimentation and the exploration of novel ideas.

7 Cons of web3

  • Complexity: Web3 technologies can be complex to understand and implement, requiring specialized knowledge and skills. This can pose a barrier to entry for developers and users who are not familiar with blockchain and decentralized systems.
  • Scalability challenges: Blockchain-based web3 platforms often face scalability challenges, as the consensus mechanisms used to validate transactions can limit the number of transactions per second. This can result in slower and more expensive transactions compared to traditional web technologies.
  • Energy consumption: Some web3 platforms, particularly those based on proof-of-work consensus algorithms, require significant amounts of computational power and energy consumption. This has raised concerns about the environmental impact of these technologies.
  • User experience limitations: The user experience of web3 applications may currently be less polished and user-friendly compared to traditional web applications. This can make adoption and mainstream use more challenging.
  • Regulatory uncertainties: The regulatory landscape surrounding web3 technologies is still evolving, and there may be uncertainties and legal challenges in various jurisdictions. This can create hurdles for businesses and individuals operating in the web3 space.
  • Potential for misuse: While web3 technologies offer many benefits, they can also be misused for illicit activities such as money laundering and fraud. This has led to concerns about the potential negative impacts of unchecked decentralized systems.
  • Dependency on internet connectivity: Web3 technologies heavily rely on internet connectivity. In areas with limited or unreliable internet access, the benefits and functionality of web3 may be limited.


Cases when web3 does not work

Does not work
  1. Unsupported Browser: Web3 requires a modern browser with built-in support for the Web3 JavaScript library. If a user is using an outdated browser or a browser that does not support Web3, it will not work properly. For instance, Internet Explorer does not support Web3, while most modern browsers like Chrome, Firefox, and Safari do.
  2. Missing Web3 Provider: Web3 relies on a provider to connect to the Ethereum network. If the user’s browser does not have a Web3 provider installed or configured, they will not be able to interact with the Ethereum blockchain. Common Web3 providers include MetaMask, Trust Wallet, and Infura.
  3. Incorrect Network Selection: Web3 relies on the user selecting the correct Ethereum network to interact with. If the user is connected to the wrong network (e.g., a test network instead of the mainnet), certain functionalities may not work as expected.
  4. Unreachable Network: Sometimes, the Ethereum network itself may experience issues or downtime, which can affect the functioning of Web3. If the network is unreachable or experiencing high latency, users may face difficulties in interacting with the blockchain.
  5. Smart Contract Incompatibility: Web3 interacts with smart contracts deployed on the Ethereum blockchain. If a user tries to interact with a smart contract that is not compatible with the version of Web3 they are using, it may lead to errors or unexpected behavior.
  6. Insufficient Gas: When performing transactions on the Ethereum network, users need to pay for computational resources using a cryptocurrency called gas. If a user does not have enough gas in their Ethereum wallet to cover the transaction fees, the transaction may fail or not execute as expected.
  7. Server-Side Restrictions: In some cases, the web server hosting the application may have restrictions or configurations that prevent Web3 from functioning properly. For example, certain security measures or firewalls may block Web3 requests, limiting the functionality of the application.
  8. Permission Issues: Web3 relies on permissions to access certain user data, such as account information or transaction signing. If a user denies permission to access these resources, certain functionalities may not work as intended.
  9. Incorrect Code Implementation: If the Web3 integration within an application is implemented incorrectly or contains bugs, it can lead to issues where certain features or interactions do not function as intended.


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