
Technology is constantly evolving, and blockchain is taking development to new places, as mobile did a decade ago – and Ethereum is the leading platform for creating this new wave of applications. This book reveals everything you need to create a robust decentralized application (more commonly known as DApp). Unlike other books on the topic, this one focuses on the web application layer, and guides you in creating great experiences on top of the Ethereum blockchain. You’ll review the challenges and differences involved in developing DApps as opposed to traditional web applications. 

After a brief introduction to blockchain history and Ethereum in particular, you’ll jump directly into building a sample decentralized application, to familiarize yourself with all the moving pieces. This book offers specific chapters on querying and rendering data from the blockchain, reacting to events, interacting with user accounts, sending transactions, managing gas, handling confirmations and reorganizations, and more. You will also find a chapter dedicated to Solidity that will give you the necessary means to understand and even build your own smart contracts. 
Other important topics covered include building backend servers that act as indexing layers, and managing storage efficiently with solutions like the interplanetary file system, or IPFS. Last but not least, you will find chapters that examine the biggest problems on Ethereum today: onboarding and scalability. These include the state of the art of the available strategies to tackle them, such as meta-transactions, smart accounts, ENS, state channels, sidechains, and more.

Learn to Build Web Applications on top of the Ethereum Blockchain

Ethereum for Web Developers

Teaching the next generation of smart contract developers and auditors. Learn from industry-leading experts how to build the next generation of web3 applications and level up your career.


Level up your web3 career through industry leading comprehensive courses

Cyfrin Updraft


Whether you're a curious hacker or an experienced engineer, 30 Days of Web3 is project-based curriculum created by developers to teach you how to build full-stack dapps.


The Ultimate Guide to Building Fullstack Dapps

30 Days of Web3


Base Bootcamp is an async, cohort-based training program designed to turn senior-level developers into Smart Contract developers.

Base Bootcamp


Welcome to Base Camp, your guide to learning smart contract development. Base Camp's curriculum has been expertly crafted to equip you with the skills and knowledge needed to build and deploy smart contracts on Base, or any EVM-compatible chain, including Ethereum, Optimism, and many more. Plus, you'll be eligible to earn NFTs as you complete each module, showcasing your mastery of the material.

Whether you're a curious novice or a seasoned pro looking to stay ahead of the game, our dynamic lessons cater to all levels of experience. You can start with the basics and work your way up, or dive straight into the more advanced concepts and push your limits to new heights.

Begin your journey today!


Base Camp's curriculum has been expertly crafted to equip you with the skills and knowledge needed to build and deploy smart contracts on Base, or any EVM-compatible chain

Base Camp


In October 2016, the Berkeley Bitcoin Association, a group of about a dozen members, founded Blockchain at Berkeley, an organization dedicated to becoming the blockchain hub of the East Bay. They also debuted the world’s first undergraduate university-accredited blockchain course, Blockchain Fundamentals, taught to about 50 students. Alongside Blockchain at Berkeley’s education team grew a consultancy that aimed to bridge the gap between geeky bitcoin enthusiasts and technovative early-adopters in the industry to develop Proof-of-Concepts for disruptive blockchain use cases. Since then, as a result of other ambitious B@B members, R&D and Design departments have also emerged.

Join over 150,000 students in earning our renowned BerkeleyX Blockchain Fundamentals Professional Certificate, with our free online course series.

Blockchain @ Berkeley


NFTs, non-fungible tokens, have taken the online world by storm ushering in the proclamation of a new world-wide web... web3.

For most, NFTs mean profile pictures (pfps). 🐵

This isn't the most practical use case, even if it is a lot of fun

Even if you wanted to create useful NFTs, it’s not easy to get started.

Since the tooling is still being developed, it can be confusing as to where to get started. It also doesn't help that there's a paradigm shift with app development from web2 to web3.

Here be dragons 🐉

This course is here to get you through that initial learning curve and frustrating lack of answered questions and good documentation.

Through building this project you will learn the general development lifecycle of NFT smart contracts and dApps giving you the skills to start your own projects.

By the end of this course, you will be able to do the following

- Use the OpenZeppelin Solidity library to create NFT smart-contracts
- Deploy smart contracts to Ethereum testnets
- Host static assets on IFPS
- Create a React dApp that interacts with your smart-contract API
- Confirm a wallet owns an NFT

This course will help you build a ticketing and proof-of-attendance service complete with wallet QR code scanning, using Solidity and React

Build a NFT ticketing service"


Blockchain is an exciting new discipline in Computer Science. It combines a wide array of skills from math and cryptography to social sciences and understanding organizations. Understanding blockchain decentralization and how/where to apply it is a brand new skill that very few have mastered.

You will build your skills from the ground up with strong fundamentals that will provide you with the ability to adapt in this rapidly evolving ecosystem.

Choose From Multiple Paths to Begin Your Ethereum Coding Journey.

Fast-track your Ethereum Developer career in an instructor-led and challenging bootcamp focused on discussion and application!

ChainShot


Smart Contracts? They're here.  The Ethereum Blockchain?  Covered.  Solidity?  Yep!

There can be no understating it: Ethereum and Blockchain technology is the most disruptive force in years.  Companies cannot hire developers who understand blockchain technologies fast enough, but there are a tiny number of resources published to help you truly understand what blockchains are used for, let alone build apps with them.  That's the purpose of this course: to be the best resource online for learning about Ethereum, blockchains, and how to build apps with this new technology.

The development community is still figuring out the best way to use Ethereum in the creation of new and exciting apps.  I spent a tremendous amount of time to research and create best practice for interfacing with Ethereum from Javascript.  I can't overstate it enough; this course will show you the best and most easily repeatable patterns for creating production-ready apps with Ethereum.

Use Ethereum, Solidity, and Smart Contracts to build production-ready apps based on the blockchain

Code with Ethereum & Solidity


Become a certified blockchain developer

Blockchain Developer Online Bootcamp

Get the skills you need to become an industry-leading Ethereum developer with our flagship Blockchain Developer Bootcamp! In our cohort-based bootcamp, you'll join a robust community of other students and developers and learn fundamental Ethereum concepts, key tools, security best practices, and smart contract/dApp development. You'll work in teams and have live access to Academy Ethereum experts through our online portal and office hours. You also get lifetime access to the community and one free year of access to the course materials through our alumni program.

ConsenSys Academy’s mission is to develop the global blockchain ecosystem by bridging the Ethereum knowledge gap, and revolutionizing education through blockchain technology.

ConsenSys Academy


Welcome to the Ethereum Blockchain Developer Bootcamp With Solidity. The only course you'll need to become an Ethereum blockchain developer.

With over 1,900 ⭐️⭐️⭐️⭐️⭐️ reviews, this course is one of the highest-rated Ethereum blockchain development courses online.

Updated video tutorials, practical projects, and fast support in the discussion board are how you master Ethereum blockchain development.

At 13+ hours, this Ethereum blockchain development course is undoubtedly the most comprehensive course of its kind anywhere online.

Even if you have zero or limited programming experience, this course will take you from beginner to Ethereum blockchain developer.

Become An Ethereum Blockchain Developer With One Course. Master Solidity, Web3.JS, Truffle, Metamask, Remix & More!

Developer Bootcamp with Solidity (2021)


Some of the best educational content to help you onboard Web 3 technologies.



The Web 3 education platform for developers, by developers.

Figment Learn


Harvard University's CS50 is one of the most popular beginner computer science courses in the world. 

Harvard CS50


This course contains the practical part of a university course on enterprise blockchain technologies. Typically, a university course is divided into theory and laboratory classes. The theory explains the theoretical foundations behind what is learned in the laboratories. At the end of this course, you will:

1. Understand the theory on blockchain: what is it (Lab 1, Lab2), and which problems it can solve (Lab 3)

2. Get to know Hyperledger Fabric's components in detail, such as architecture and transactional model (Lab 4), chaincode (Lab 5), network, and how to develop an enterprise full-stack blockchain decentralized application (Lab 6)

3. Leverage Hyperledger Umbra to study advanced topics on Fabric (Lab 7, Lab 8)

This free, open-source course aims at providing a reliable basis for university students to get started in enterprise blockchain. 

Enterprise Blockchain Technologies


The Ethers.js course is a free course designed to help students learn how to interact with the blockchain via specialized API queries using the ethers.js library

Introduction to Ethers.js


https://www.youtube.com/watch?v=gyMwXuJrbJQ

This course will give you a full introduction into all of the core concepts in blockchain, smart contracts, solidity, NFTs/ERC721s, ERC20s, Coding Decentralized Finance (DeFi), javascript and solidity, Chainlink, Ethereum, upgradable smart contracts, and full stack blockchain development.   

Some of the technologies covered are:
- The Graph
- Chainlink
- Metamask
- Alchemy
- Remix
- Hardhat
- Solidity
- Openzeppelin
- Trail of Bits
- Ganache
- Ethers
- Etherscan
- Coinmarketcap
- Aave
- IPFS
- Fleek.hq
- Filecoin
- NextJS
- Moralis
- Web3uikit
- Opensea
- Pinata
- Nft.storage

 And more!

Follow along with the videos and you'll be a blockchain wizard in no time!  💻 The repository with helpful links to all code, resources, and support forums is located here: https://github.com/smartcontractkit/full-blockchain-solidity-course-js.

This course will give you a full introduction into all of the core concepts related to blockchain, smart contracts, Solidity, ERC20s, full-stack Web3 dapps, decentralized finance (DeFi), JavaScript, TypeScript, Chainlink, Ethereum, upgradable smart contracts, DAOs, the graph, moralis, aave, IPFS, and more. Follow along with the videos and you'll be a blockchain wizard in no time!

Learn Blockchain, Solidity, and Full Stack Web3 Development with JavaScript – 32-Hour Course


This is the place for you if you're a developer who is interested in cryptocurrencies but is unsure of where to begin. Get access to classes with projects you'll love.


Learn about web3 and blockchain through creating awesome things.

metaschool

Test your Web3 knowledge and claim your ZK certifications.

useWeb3 Academy


This monorepo should allow you to get started with a simple Greeter smart contract on localhost and Rinkeby in record time with this basic react stack using

- Typescript
- NextJS
- Hardhat
- useDapp
- Tailwind CSS
- Redux Toolkit
- Yarn Workspace

Basic Typescript Starter


[boilr3](https://github.com/Envoy-VC/boilr3) is a comprehensive starting point for building decentralized applications using [Next.js](https://nextjs.org/) and [TypeScript](https://www.typescriptlang.org/).

**Tech Stack**

- Next.js
- TypeScript
- TailwindCSS
- RainbowKit
- wagmi


An open-source all-in-one Next.js + Typescript based dApp boilerplate featuring RainbowKit, TailwindCSS and wagmi.

boilr3

Accelerate your web3 creativity with the Build Onchain Apps Toolkit ⛵️

Build Onchain Apps

Celo Composer allows you to quickly build, deploy, and iterate on decentralized applications using Celo. It provides a number of frameworks, examples, and Celo specific functionality to help you get started with your next dApp.


Template to quickly build, deploy, and iterate on decentralized applications on Celo Blockchain.

celo-composer


Create Eth App supports multiple frontend frameworks. It comes with a host of decentralized finance templates pre-filled with contract ABIs, addresses and subgraphs. Everything you need to build a modern Ethereum-powered single-page app.

- Learning how to write Ethereum-powered apps in a comfortable and feature-rich development environment.
- Starting new Ethereum-powered single-page React applications without wasting time on copy-pasting boilerplates
- Creating examples with React for your Ethereum-related libraries and components.

Create Ethereum-powered apps with one command

Create Eth App


Create WalletConnect Dapp or `create-wc-dapp` is a CLI tool to bootstrap a WalletConnect integrated dapp with a single command.
It supports three templates, `Next.js`, `React` and `Vanilla(js)` along with two providers `Wagmi` and `Ethers.js`.

For more information, visit the official guide on [WalletConnect Docs](https://docs.walletconnect.com/web3modal/quickstart)


Bootstrap a WalletConnect integrated dapp with in seconds 📲

Create WalletConnect Dapp


The complete toolbox to create full-stack web3 applications!


The complete toolbox to create web3 applications.

Create Web3 Dapp


This starter kit is composed of Next.js and Tailwind CSS, with RainbowKit, ethers, & wagmi for all your web3 needs. It uses Typescript and an opinionated directory structure for maximum dev confy-ness.

dApp Starter


The easiest entry point to the Web3!
feel free to fork and contribute.
This Decentralized Application Boilerplate is built with React + RainbowKit + wagmi + Next.js + Chakra-ui.
Including features like:
    - Fully functional Nextjs App
    - Connect wallet
    - Show account balance
    - Sign message on-chain
    - Switch between chains (Ethereum and the Layer 2s)


The easiest entry point to the Web3. Decentralized Application Boilerplate using Next.js, RainbowKit, Wagmi and Chakra-ui

Dapp Boilerplate


✅ Type-Safe Contract-Interactions<br/>
✅ Multichain by default<br/>
✅ Production-Ready<br/>
✅ Maintained & Up-to-Date Packages<br/>

**The Stack:**

- Recommended Package-Manager: `pnpm`
- Monorepo Tooling: `turborepo`
- Smart Contract Development: `hardhat`
  - Deploy & ABI/Address-Export: `hardhat-deploy`
  - Typescript-Types: `typechain`
  - Vyper support: `hardhat-vyper`
- Frontend: `next`
  - Contract Interactions: `wagmi`, `rainbowkit`
  - Styling: `tailwindcss`
  - Styled Components: `twin.macro`, `emotion`
- Misc:
  - Linting & Formatting: `eslint`, `prettier`
  - Actions on Git Hooks: `husky`, `lint-staged`


Highly-integrated, fast, and type-safe monorepo with NextJS, Tailwind, Hardhat, wagmi.sh, and Rainbowkit.

ETHathon Full-Stack DApp Boilerplate


Simply Write, Test, Deploy, and Interact with your smart contracts with this javascript hardhat based framework containing various utilities for helping you out to easily manage your project.


Template for building smart contract projects in hardhat with solidity and javascript with necessary utilities.

hardhat-js-starterkit


Write smart-contracts that are typed, deployed, instantiated and connected to provider in React app.

Hardhat React boilerplate


Test, deploy, and interact with your smart contracts with this javascript hardhat based framework!


Template for building smart contract projects in hardhat with solidity, python, and chainlink. 

hardhat-starter-kit


A template to build a decentralised application using ethereum, builder, svelte and thegraph


A template to build a decentralised application using ethereum, buidler, svelte and thegraph

Jolly Roger


A simple template, having Next.js, Tailwind and Hardhat preconfigured 🔥


next-tailwind-hardhat


This is a default Next.js project bootstrapped with create-next-app, customized as the default boilerplate for new Web3 projects.

Features
- Separate packages from ethers.js for improved tree-shaking, often only ethers Contracts
- Hooks-first approach to fetching and caching data from Contracts and memoization for performance with SWR
- web3-react for ease of connecting to Web3 providers with a solid API
- Auto-generates types for the contract ABIs in the /contracts folder via TypeChain

Slightly opinionated Web3 boilerplate based on Next.js and SWR

Next Web3 boilerplate


**Features**
- Next.js
- Ethereum
- Typescript
- Chakra UI
- Wagmi
- Connectkit
- Ethers.js

An open-source Next.js + Ethereum starter kit to quickly ship Web3 Apps

Nexth Starter kit


A one-click install local environment to build on Ethereum!


Forkable 'one-click install' ETH + Truffle + Ganache + VanillaJS dev stack to build locally

Quick dApp


This boilerplate repository provides a simple mechanism for implementing social login options within a RainbowKit modal, creating a familiar environment for users to onboard with their Google account, email, Twitter, phone, etc.

Specifically, this uses Particle Auth (an service from Particle Network) to generate a wallet derived from the social login process, secured using MPC-TSS.

This boilerplate is written in TypeScript and uses RainbowKit (alongside the Particle RainbowKit extension), Wagmi, TypeScript, and Particle Auth.

Boilerplate for implementing social login options (via Particle Auth) into RainbowKit.

RainbowKit Social Login Boilerplate


Particle Auth Core facilitates social logins (through Google, email, Twitter, phone, etc.), onboarding users into either EOA or AA accounts secured by MPC-TSS. This boilerplate acts as a starting point and full demo for implementing Particle Auth Core to achieve this, specifically in-tandem with ERC-4337 account abstraction.

Built using Particle Auth Core, TypeScript, Particle AA SDK.

Boilerplate for onboarding users through social login with Particle Auth Core using React.

Social Logins with Particle Auth Core


Everything you need to build on Ethereum!

Quickly experiment with Solidity using a frontend that adapts to your smart contract

Forkable Ethereum dev stack focused on fast product iterations

Scaffold-ETH


Simple monorepo you can use as a template to start developing your dApp with Semaphore. 

Semaphore Boilerplate

This repo shows how to connect your React app to StarkNet.

Starknet React example


SvelteKit-EVM-Bootstrap is a boilerplate project built using SvelteKit, which provides a modern, lightweight framework for building web3 applications. 
It includes several popular libraries and tools to help you quickly build and deploy your blockchain-based web application, such as Web3-Onboard, Viem, Typescript, Tailwind, Playwright, Vitest, Prettier, and ESLint.


A lightweight boilerplate project for building blockchain-based web applications, with support for Web3-Onboard, Viem, and more.

Sveltekit EVM Bootstrap


This is a starter kit for developing, testing, and deploying smart contracts with a full Typescript environment. This stack uses Hardhat as the platform layer to orchestrate all the tasks. Ethers is used for all Ethereum interactions and testing.

Starter kit for smart contract development using Typescript

Typescript Solidity Dev Starter Kit


Introduces great features:

- React hooks - Uses React hooks as your primary building ingredient
- Auto refresh - Refreshes on a new block, wallet change or network change
- Multicall - Combines multiple blockchain calls into a single multicall

Combines the best practices:
- Modern stack - Employs ethers.js, web3-react, multicall & waffle
- Extendability - Extends easily with custom hooks
- Testability - Simple integration tests for UI and blockchain

Framework for rapid Dapp development. Simple. Robust. Extendable. Testable

useDapp


Everything you need to build on Ethereum and Polygon!

Quickly experiment with Solidity using a frontend that adapts to your smart contract

**Stack Used**:
- Solidity
- Next.js
- ChakraUI
- Hardhat
- Rainbow Kit
- Wagmi
- Ether.js


Forkable Ethereum & Polygon dev stack focused on fast product iterations

Web3-Starter-Kit

Testing smart contracts is a crucial aspect of the development process to ensure that the contracts function correctly and are error-free. Hardhat is a development environment for Ethereum applications that offers various tools and libraries to facilitate smart contract testing

Mastering Smart Contract Testing: A Comprehensive Guide to Hardhat

Guide walking through deploying and bridging an ERC20 token

Polygon: Bridging ERC-20 from Ethereum to Polygon


The journey of building a Cross-Platform Solana Wallet to learn the basics to interact with Solana Blockchain.

Blog post series to build step by step a Solana Wallet

Building in Public an Open Source Solana Wallet Cross-Platform App with Expo, Web3 and React Native


in this post I’ll be showing how to use a library called web3-react in order to connect users to MetaMask or any wallet from your frontend.

Connect Users to MetaMask


This is a step-by-step guide on how to build a Zero Knowledge (zk) Decentralized Application (DApp) from zero to production.

The goal is to explain the flow of a zk dapp and deploy it so that users can use it.

- We will create a zk DApp to prove that someone knows how to solve a sudoku game, without revealing the answer.
- We will use Circom (for circuits), Solidity (for smart contracts) and Javascript (for the frontend).
- I will cover circuits and smart contracts testing.
- I will give some tips that I use to build and organize this kind of projects.

How to create a Zero Knowledge DApp: From zero to production

Ethereum Dev Speed Run

Ethereum logs tutorial series: Logs and filters


Ethereum allows us to build decentralized applications (dapps). The main difference between a typical application and a dapp is that you don’t need to deploy a backend—at least as long as you take advantage of the other smart contracts deployed on the Ethereum mainnet.

Because of that, the frontend plays a major role. It is in charge of marshaling and unmarshaling the data from the smart contracts, handling the interactions with the wallet (hardware or software) and, as usual, managing the UX. Not only that, by design, a dapp uses JSON-RPC calls and it can open a socket connection to receive updates.

As you can see there are a few things to orchestrate but don’t worry, the ecosystem has matured quite a lot in the last few months.

How to Fetch and Update Data From Ethereum with React and SWR

Fetch data from Ethereum with SWR


We learn exactly how web3 / blockchain / smart contract applications work in the front end using HTML and Javascript. We then go through 6 different ways you can connect your Metamask, Phantom, or other blockchain wallet address to your front end. We’ll look at popular Nextjs / React packages to make your development lifecycle 100 times easier.

💻 Code: https://github.com/PatrickAlphaC/full-stack-web3-metamask-connectors
✍️ Article: https://betterprogramming.pub/everything-you-need-to-know-about-fullstack-web3-94c0f1b18019?sk=a2764bcbdae98bf05e1052931de77982
NextJS: https://nextjs.org/


We learn exactly how web3 / blockchain / smart contract applications work in the front end using HTML and Javascript. We then go through 6 different ways you can connect your Metamask, Phantom, or other blockchain wallet address to your front end. We’ll look at popular Nextjs / React packages to make your development lifecycle 100 times easier. 

Full Stack Web3 — Everything You Need to Know

SSX is a library that enables you to easily add user authentication, session management, and more to your dapp.

Getting started with SSX


Welcome to our beginners guide to Ethereum contracts and dApp development. This tutorial is aimed at hackathon participants who are getting setup to quickly build something from scratch.

To orchestrate this process we're going to use Hardhat, a development environment that facilitates building on Ethereum. It helps developers manage and automate the recurring tasks that are inherent to the process of building smart contracts and dApps, as well as easily introducing more functionality around this workflow. This means compiling and testing at the very core.

Hardhat also comes built-in with Hardhat Network, a local Ethereum network designed for development. It allows you to deploy your contracts, run your tests and debug your code.

A beginners guide to Ethereum contracts and dApp development

Hardhat's tutorial for beginners

In this tutorial, you will learn how to build a decentralized application (dApp) for cross-chain airdrops using Solidity, Next.js, and Axelar General Message Passing for distributing tokens across multiple chains

How to Build a Cross-Chain Airdrop DApp With Solidity, Next.js and Axelar


This tutorial will cover the following concepts:

1. How to write Solidity smart contract code
2. How to write tests for smart contracts using Hardhat and Waffle
3. How to dynamically deploy your smart contract to different blockchains using Hardat
4. How to create a React Web Application to interact with your smart contract using ethers.js


Create, test and deploy an NFT smart contract using the ERC721 standard and write a marketplace smart contract for buying and selling the NFTs. Add multi-chain functionality to mint NFTs on Ethereum, Polygon, Binance Smart Chain and any EVM-compatible blockchain.

How to Build a Multi-Chain NFT Marketplace on Ethereum, Polygon and Binance Smart Chain using Solidity, React, Hardhat and Ethers.js


This application will do the following operations:

- Connect to the Network
- Generate an Account
- Get the balance of the generated Account
- Request an Airdrop

Practical guide you will build a basic Wallet application with React and Web3 that will interact with Solana Network.

How to Build a Wallet Generator for Solana in React

In this tutorial, you will learn how to build a full-stack interchain decentralized application with Next.js, Solidity and Axelar General message passing to send messages from one blockchain to another.

Build a Full-Stack Interchain Application With Next.js, Solidity & Axelar


In Zero Knowledge Lottery we introduced a revolutionary zero knowledge lottery scheme. As discussed in the article, it’s possible to implement the scheme by modifying Tornado Cash Nova’s (Nova) code. In this two part blog series we’ll first explain how Nova’s circuits work (PART 1) and then implement the ZK-Lottery on top of it (PART 2).

- Zero Knowledge Lottery https://killari.medium.com/zero-knowledge-lottery-437e456dc3f2
- Part 1 - https://killari.medium.com/implementing-zero-knowledge-lotterys-circom-circuits-part-1-2-16910b3732a2
- Part 2 - https://killari.medium.com/implementing-zero-knowledge-lotterys-circom-circuits-part-2-2-59a2f976cd24

In this blog series we’ll first explain how Nova’s circuits work (PART 1) and then implement the ZK-Lottery on top of it (PART 2).

Implementing Zero Knowledge Lottery’s Circom circuits - Part 1

Implementing Zero Knowledge Lottery’s Circom circuits - Part 2


This workshop is built around Scaffold-ETH 2 and The Graph. You will learn how to:

- Setup a development environment for your dapp using Scaffold-ETH 2 and The Graph
- Update and deploy your smart contract
- Create and deploy a Subgraph to The Graph
- Edit your frontend to interact with both your smart contract and Subgraph


This workshop is built around Scaffold-ETH 2 and The Graph. You'll learn to setup your development environment, deploy and index smart contracts and built a front-end

An Introduction to Full Stack dapp Development


Using Compound and Openzeppelin as a basis, we build a 100% on-chain DAO using an ERC20 governance token for votes. 

And yes, that is me doing windmills.

✍️ Article: https://betterprogramming.pub/how-to-code-an-on-chain-dao-e525e13a57be?sk=959cb289140bba734acfe843d8226c4a

💻 JS Code: https://github.com/PatrickAlphaC/dao-template
💻 PY Code: https://github.com/brownie-mix/dao-mix
🐍 Python Video: https://www.youtube.com/watch?v=rD8AxZ_wBA4
🎛 Openzeppelin Governance: https://docs.openzeppelin.com/contracts/4.x/api/governance
📈 Compound Governance: https://compound.finance/governance
🧙‍♀️ Contract Wizard: https://docs.openzeppelin.com/contracts/4.x/wizard
🗳 CastVoteBySig: https://forum.openzeppelin.com/t/what-is-votecastbysig/17069/2


Using Compound and Openzeppelin as a basis, we build a 100% on-chain DAO using an ERC20 governance token for votes.  

How to build an on-chain DAO


These tutorials help you get started developing for Optimism.

Learn to build an Optimistic app! 


Sign-In with Ethereum is an authentication standard (EIP-4361) that enables secure communication between a frontend and backend. SIWE is a powerful method for creating user sessions based on a wallet connection, and much more!

This example builds on the Connect Wallet and Sign Message examples. Try it out before moving on.

Sign-In with Ethereum is an authentication standard (EIP-4361) that enables secure communication between a frontend and backend.

Sign-In with Ethereum


In this blog post, I’m going to cover the first scaffold-eth speed run project: creating a Staking dApp. If you want to know more about scaffold-eth and my current journey in the web3 world you should read my previous article: My journey in Web3 development: scaffold-eth.

The goal of the dApp
The end goal of the project is to mimic the Ethereum 2.0 staking contract. The requirements are pretty simple:
- allow anyone to stack ether and track their balance
- if a time and stack amount deadline have reached don’t allow - users to withdraw their fund (those found are used for a future project, like the Ethereum PoS)

The end goal of the project is to mimic the Ethereum 2.0 staking contract using scaffold-eth.

Staking dApp


Here’s what we’ll accomplish:

- Set up a basic, reusable development environment to build and test smart contracts that interact with the Uniswap Protocol
- Run a local development Ethereum node forked from Mainnet that includes the full Uniswap Protocol
- Write a basic smart contract that executes a swap on Uniswap V3
- Deploy and test that contract


Developers who are new to the Uniswap ecosystem often get stuck in the first stages of developing on-chain integrations with the Protocol. In this post, we’re going to help you get over those first hurdles.

Building Your First Uniswap Integration


Build and Deploy Smart Contracts using Hardhat

Build and Deploy using Hardhat

Learn how to utilize and leverage complicated Web3 technologies in a matter of minutes.

Byte-Size BUIDLing with Chainstack


Nader Dabit and Austin Griffith discuss building apps with Solidity and Ethereum as well as the developer ecosystem, how to get started, as well as landing jobs and contracts.

 In this video you'll learn how to use Lens Protocol to build out a basic social media application.

Full Stack Web3 with Lens Protocol

How to connect metamask to your smart contracts on a website


Executives, strategists, CTOs, IT professionals, developers and other interested parties will gain an understanding of blockchain technology (including mining, consensus algorithms, smart property, and smart contracts). The current status of blockchain technology, potential applications in Financial Services, Logistics, Healthcare, Energy, and IoT, and next steps regarding its deployment in your organization are discussed. 

Learn to build a flashbot the easy way. It's a complex process but I broke it down into short steps so you can follow along and learn the structure needed to send an MEV-bundle and get it accepted by flashbots.

Learn Flashbots MEV in 20 mins by building a flashbot


Using Compound and Openzeppelin as a basis, we build a 100% on-chain DAO using an ERC20 governance token for votes. 

And yes, that is me doing windmills.

✍️ Article: https://betterprogramming.pub/how-to-code-an-on-chain-dao-e525e13a57be?sk=959cb289140bba734acfe843d8226c4a

💻 JS Code: https://github.com/PatrickAlphaC/dao-template
💻 PY Code: https://github.com/brownie-mix/dao-mix
🐍 Python Video: https://www.youtube.com/watch?v=rD8AxZ_wBA4
🎛 Openzeppelin Governance: https://docs.openzeppelin.com/contracts/4.x/api/governance
📈 Compound Governance: https://compound.finance/governance
🧙‍♀️ Contract Wizard: https://docs.openzeppelin.com/contracts/5.x/wizard
🗳 CastVoteBySig: https://forum.openzeppelin.com/t/what-is-votecastbysig/17069/2



Session keys are an incredible powerful tool for building consumer-ready applications through their complete removal of popups for end-users. This tutorial leverages Particle Network's AA SDK and Smart Wallet-as-a-Service to showcase the process of implementing session keys (alongside social logins) within your own application (which only takes roughly 7 minutes, around 100 lines of code).

Removing confirmation popups through session keys with Particle Network's AA SDK.

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