Blockchain development

Nicolas Koriakos

(0)

Starting at

$

150

/hr

About this service

Summary

I offer comprehensive Web3.0 development services, delivering secure, decentralized applications (DApps) with smart contract integration, blockchain connectivity, and seamless wallet support. My approach focuses on building user-friendly, scalable solutions while ensuring top-notch security and transparency. What sets me apart is my deep understanding of blockchain ecosystems and commitment to delivering future-proof, decentralized solutions tailored to client needs.

Process

Web3.0 Development Process
Discovery & Planning
Gather client requirements, define project goals, and understand the desired blockchain ecosystem.
Create a detailed roadmap, outlining key deliverables, milestones, and timelines.
Blockchain Selection & Architecture
Select the appropriate blockchain (e.g., Ethereum, Binance Smart Chain, Polygon) based on project needs.
Design the system architecture, including smart contracts, token standards, and decentralized storage solutions.
UI/UX Design
Develop wireframes and mockups for the DApp's user interface, focusing on a seamless user experience across devices.
Present design prototypes for client review and feedback.
Smart Contract Development
Write and test custom smart contracts using Solidity (or relevant language).
Ensure smart contracts handle key functionalities such as token creation, payments, or governance.
Frontend Development
Build the DApp’s frontend using React (or similar), integrated with Web3.js or Ethers.js to interact with the blockchain.
Implement wallet connections and user interface components for interacting with smart contracts.
Blockchain & Backend Integration
Connect the DApp to the blockchain network and integrate decentralized storage (IPFS, Arweave) if needed.
Set up APIs or decentralized oracles (if required) to interact with external data sources.
Testing & Smart Contract Auditing
Conduct rigorous testing on testnets, verifying smart contract functionality and ensuring no vulnerabilities.
Option for third-party audits to ensure security and compliance with blockchain standards.
Client Review & Iteration
Present the completed DApp and smart contracts to the client for feedback.
Make adjustments and refinements based on client input before final deployment.
Deployment
Deploy smart contracts to the main blockchain network and host the DApp on decentralized platforms (e.g., IPFS, Skynet) or cloud services.
Set up domain and SSL, and finalize blockchain configurations.
Post-Launch Support & Maintenance
Provide ongoing support, including monitoring, bug fixes, and updates.
Ensure the DApp runs smoothly and remains secure as blockchain environments evolve.

FAQs

  • What is Web3.0, and how is it different from traditional web development?

    Web3.0 refers to a decentralized web where applications (DApps) run on blockchain technology, removing intermediaries and giving users more control over their data. Unlike traditional web apps, Web3.0 apps are decentralized, rely on smart contracts, and often involve digital assets like tokens or cryptocurrencies.

  • How long does it take to develop a Web3.0 project?

    The development timeline depends on the project's complexity, including the blockchain selection, smart contract functionality, and any custom features. Typically, a standard DApp project can take 8-12 weeks, while more advanced solutions may take longer.

  • Will I need to pay for gas fees for blockchain transactions?

    Yes, gas fees are required for deploying and interacting with smart contracts on most blockchains (like Ethereum). These fees vary depending on the network's traffic and transaction complexity. Lower-cost blockchains like Polygon or Binance Smart Chain can help reduce fees.

  • How do you ensure the security of my smart contracts?

    I follow industry best practices for writing secure smart contracts, including rigorous testing on testnets and performing audits (either in-house or through third parties) to identify and fix vulnerabilities before deployment.

  • Can I update the smart contract after it’s deployed?

    Once deployed, smart contracts are immutable on the blockchain, meaning they cannot be changed. However, I can build upgradeable smart contracts or include a proxy pattern to allow for future updates and improvements without redeploying everything.

  • Do you handle token creation for ICOs or NFTs?

    Yes, I can create custom tokens (ERC-20, ERC-721, or ERC-1155) for various use cases like Initial Coin Offerings (ICOs) or NFTs. These tokens will be integrated into the DApp and optimized for user interactions.

  • Which blockchain should I choose for my project?

    The blockchain choice depends on your project’s requirements, such as transaction volume, gas fees, and scalability. Ethereum is a popular choice for DApps, but alternatives like Binance Smart Chain, Polygon, or Solana can offer lower costs and faster transactions.

  • How do users interact with my Web3.0 DApp?

    Users can interact with your DApp through decentralized wallets like MetaMask or Trust Wallet, which allow them to securely connect, authenticate, and sign transactions on the blockchain.

  • What happens if a bug is found after deployment?

    Post-launch support is included in my services. If a bug is found, I will work to resolve it quickly. If needed, I can redeploy smart contracts or make updates using upgradeable contract patterns.

  • Do you provide post-launch support and maintenance?

    Yes, I offer ongoing support to ensure your DApp runs smoothly, including bug fixes, performance optimization, and updates. I can also provide additional services like feature expansion or security monitoring.

What's included

  • Decentralized Application (DApp)

    A fully functional DApp with a decentralized architecture, utilizing blockchain technologies such as Ethereum or Binance Smart Chain. A frontend interface (built with React or similar) that interacts with blockchain smart contracts and allows users to access decentralized services.

  • Smart Contracts

    Custom-developed, secure smart contracts written in Solidity (or relevant language), deployed on the blockchain. Full testing and auditing of smart contracts to ensure they are secure, efficient, and free of vulnerabilities. Documentation of smart contracts, explaining their functionality and usage.

  • Token Integration

    If applicable, creation and deployment of custom tokens (ERC-20, ERC-721, or ERC-1155) for specific use cases such as payments, governance, or NFTs. Integration of token functionality within the DApp, including wallet support for transactions (e.g., MetaMask).

  • Blockchain Integration

    Seamless integration of the DApp with a blockchain network (e.g., Ethereum, Polygon, Binance Smart Chain). Functionality for interacting with blockchain data (e.g., retrieving user balances, processing transactions, querying blockchain state).

  • Decentralized Storage

    Integration with decentralized storage solutions such as IPFS, Filecoin, or Arweave to store files, assets, and metadata securely. Documentation and setup of file uploads, retrieval, and verification processes.

  • Wallet Integration

    Frontend user interface built with React (or similar) connected to blockchain backends and decentralized APIs. Integration with Web3.js or Ethers.js for communication between the frontend and smart contracts.

  • Testing & Audits

    Comprehensive testing of the smart contracts on test networks to ensure functionality and security. Option for third-party smart contract audits to verify security and compliance with best practices.

  • Governance & DAOs (Optional)

    Setup of decentralized governance models using DAO frameworks. Implementation of voting mechanisms and governance tokens to allow users to participate in decision-making.

  • Cross-Chain Compatibility

    Integration with cross-chain bridges or protocols to enable the DApp or token to function on multiple blockchain networks. Multi-chain support to allow users to interact with multiple blockchain ecosystems.

  • Security Measures

    Implementation of security protocols such as multisig wallets, encryption, and secure APIs. Regular security checks and adherence to best practices for protecting smart contracts and user assets.

  • Deployment

    Deployment of smart contracts on the main blockchain network. Deployment of the DApp to cloud platforms or decentralized hosting services (e.g., IPFS, Skynet). Configuration of domain, SSL, and hosting services.

  • Documentation

    Technical documentation for smart contracts, APIs, and integrations. User documentation or guides explaining how to use the DApp, connect wallets, and interact with the platform.

  • Post-Launch Support

    Monitoring and maintenance of the smart contracts and DApp post-launch. Bug fixes, updates, and performance improvements based on user feedback or blockchain changes.

  • Analytics Dashboard (Optional)

    Setup of an analytics dashboard to track user activity, token metrics, or governance participation. Real-time data integration with blockchain explorers or custom data APIs.

Skills and tools

Blockchain Developer
Smart Contract Engineer
Fullstack Engineer
Ethereum
Rust
Solana
Solidity

Industries

Blockchain
Smart Contracts
Web3

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