Web3 Development
Build and test Solidity contracts, connect wallets, and deploy applications on EVM networks. Start with the Solidity guide, then follow the testing and deployment articles.
21 articles
Web3 Development Cost: How Much Does It Really Cost in 2026
Honest breakdown of Web3 development costs in 2026. From smart contracts to full-stack dApps, DeFi protocols to NFT platforms — real dollar ranges from a developer who builds them.
The Graph Protocol: Indexing Blockchain Data for dApps
A practical guide to indexing on-chain data with The Graph Protocol — from subgraph definition and schema design to event handlers, deployment on Subgraph Studio, and querying with GraphQL. Covers hosted vs decentralized network, performance optimization, and real patterns from production DeFi and NFT indexing.
ERC-721A: Gas-Efficient NFT Minting at Scale
A deep dive into ERC-721A — the gas-optimized NFT standard that makes batch minting dramatically cheaper than standard ERC-721. Real gas benchmarks, implementation guide with Merkle tree whitelists, delayed reveal mechanics, and common pitfalls from production drops I have shipped.
Building a Decentralized Exchange (DEX) with Solidity
A complete guide to building a Uniswap V2 style automated market maker (AMM) DEX from scratch — factory, pair, and router contracts in Solidity. Covers constant product formula, liquidity provision, swap execution, fee collection, slippage protection, and comprehensive Foundry testing. Security-first approach based on real DeFi client work.
Token Vesting Contracts: Implementation Guide
A complete guide to building token vesting contracts in Solidity — cliff vesting, linear vesting, multi-beneficiary schedules, and revocable vs irrevocable designs. Covers OpenZeppelin VestingWallet, custom extensions, Foundry testing, and frontend integration with wagmi. Based on real token launch work.
How to Build a Multi-Sig Wallet Smart Contract
A complete guide to building a production-grade multi-signature wallet smart contract in Solidity — from architecture and approval flows to execution logic and owner management. Includes a full working contract, Foundry test scenarios, and honest guidance on when to use Gnosis Safe instead of rolling your own.
wagmi and viem: The Modern Web3 Frontend Stack
A hands-on guide to building Web3 frontends with wagmi and viem — why I switched from ethers.js, how to set up wallet connections with RainbowKit, read and write contract data with full type safety, handle multi-chain configurations, and the real patterns I use on every client dApp. Based on production projects shipping on Ethereum, Arbitrum, Base, and Optimism.
Upgradeable Smart Contracts: Proxy Patterns Explained
A deep dive into upgradeable smart contract patterns — Transparent Proxy, UUPS, and Beacon Proxy — with real Solidity code, storage layout rules, and honest guidance on when upgradeability adds risk instead of value. Based on production deployments for clients who need post-deployment flexibility.
Building a Staking Protocol with Reward Distribution
A complete guide to building a gas-efficient staking protocol with reward distribution using the reward index pattern. Covers Solidity implementation, compound staking, multi-token rewards, security considerations, and Foundry testing — based on real DeFi client work.
The Complete Guide to OpenZeppelin Contracts
OpenZeppelin Contracts is the library I install before writing a single line of Solidity. This guide covers every contract family I use in production: ERC-20, ERC-721, ERC-1155 token standards, AccessControl for role-based permissions, ReentrancyGuard for security, Governor for on-chain governance, and the UUPS proxy pattern for upgradeability. You will learn how to extend OpenZeppelin contracts properly, when to override versus compose, and the exact patterns I follow across mainnet deployments on Ethereum, Arbitrum, and Base. Practical Solidity code, no theory padding.
Web3 Authentication: Wallet-Based Login for Modern Apps
A practical guide to implementing wallet-based authentication using wagmi, RainbowKit, and Sign-In with Ethereum (SIWE). Covers session management, backend verification, multi-chain support, and the UX patterns that actually get users through the login flow without confusion.
Understanding Ethereum Virtual Machine: A Developer's Guide
A developer's deep dive into the Ethereum Virtual Machine — how bytecode executes, stack-based computation works, gas metering prices every operation, and storage layout affects your contract costs. Written from hands-on Solidity experience, not textbook theory.
How to Build an NFT Marketplace from Scratch
A full-stack guide to building an NFT marketplace — from a Solidity marketplace contract with listing, buying, and bidding logic to royalty enforcement with ERC-2981, a React frontend with wagmi, and IPFS metadata storage. Security-first approach based on real client builds.
Deploying Smart Contracts on Arbitrum: Step-by-Step
A practical step-by-step guide to deploying Solidity smart contracts on Arbitrum using Foundry. Covers testnet and mainnet deployment, contract verification, gas cost comparison with Ethereum, and key differences you need to know before going live.
Building a DAO Governance System with Solidity and React
A complete guide to building a production DAO governance system — from OpenZeppelin Governor contracts and timelock execution to a React frontend with wagmi. Based on real governance contracts I have deployed for clients.
Foundry vs Hardhat in 2026: Which Framework Should You Use
A hands-on comparison of Foundry and Hardhat for Solidity development in 2026. Speed benchmarks, testing approaches, fuzz testing, and when to pick each framework.
Smart Contract Gas Optimization: 30 Techniques That Work
30 proven gas optimization techniques for Solidity smart contracts with before/after code examples and real gas savings numbers. From storage packing to assembly tricks, based on production deployments on Ethereum and L2s.
Building Cross-Chain Applications with Layer 2 Networks
A practical guide to building cross-chain applications across Arbitrum, Optimism, Base, and zkSync — covering architecture patterns, bridge integration, multi-chain contract deployment, and frontend orchestration with wagmi. Based on real production deployments.
ERC-20 Token Development: From Concept to Mainnet
A practical guide to building, testing, and deploying ERC-20 tokens using Solidity, OpenZeppelin, and Foundry. Real contract code, real deployment steps, real mistakes to avoid.
Solidity Smart Contract Development: The Complete 2026 Guide
Solidity smart contract development in 2026 requires Solidity 0.8.24+, Foundry for testing, and OpenZeppelin for battle-tested standards. This guide covers the full workflow I use in production: project setup with forge init, writing secure contracts using Checks-Effects-Interactions, fuzz testing with Foundry, and deploying to Ethereum L2s like Arbitrum and Base. You will learn storage slot packing for gas optimization, the reentrancy guard pattern, access control with role-based permissions, and how to structure upgradeable contracts using the UUPS proxy pattern. Every pattern here is battle-tested across mainnet deployments.
How to Build a Production DeFi Protocol from Scratch
A practical walkthrough of building a production-ready DeFi protocol — from architecture decisions and Solidity smart contracts to security patterns and mainnet deployment. Based on real experience building DeFi components for clients.