
Building Ethereum Dapps teaches Dapps development on the Ethereum blockchain platform. You'll begin with a mental model of how Dapps operate, and then dive into designing and implementing smart contracts in Ethereum's Solidity language. You'll explore Ethereum smart contract development tools, like Truffle and Web3, and pick up best practices for design and security. Practical exercises throughout give you valuable hands-on experience. 

In this book, you'll learn the principles of Dapps development by rolling up your sleeves and actually building a few!

Building ethereum dapps decentralized applications on the ethereum blockchain


As IBM´s official liaison to the Ethereum core developers I gave talks on blockchain topics pretty much around the world. After one keynote I was asked for a non-technical guide to understand blockchains. This is it.

The book aims to help you get your head around blockchains in general and around Ethereum specifically. Since Ethereum is currently the pre-imminent blockchain, it makes sense as reference point. The essential stuff is the same for any blockchain.

This text was written for people with a fast grasp, who are not programmers. Reading this should give you the basics to cut through the hype and to identify blockchain opportunities in your professional domain. There are tiny bits of code, which can be admired and skipped.

We´ll look at Ethereum´s benefits first, how it is used and what can be done with it; then explain blockchain machinery, visiting the terms that you´ll be confronted with in every discussion about its application. Exactly what you need to tell the signal from the noise in the echo chamber of honest misunderstandings and desperate marketing.

We take a good hard look at limitations, throw in some history and names and give a realistic outlook.

The index reads like an FAQ and you can use the book like that. However, there is a strong build up, one chapter leading to the next, as optimized path to understanding all the interconnected, moving parts. There´s quite a number of them.

Blockchains are not a trivial topic. The fact that blockchain client programs are small has fooled many people into believing it can´t possibly be that hard. The challenges are in the implications though.

But what’s in this book will put you ahead of almost everyone outside the core bubble.

A deep dive into this field now – at least getting started – will help you to become part of the fun ahead. It should allow you to stand out, land deals or a great job.

It will also make you see first hand how early we are in the game.

Hopefully, we will find a contributor to the blockchain community in you, strengthening the portfolio of real-world use cases. Ideally, you´ll learn to navigate your own uncharted course through your domain and revolutionize it.

The book aims to help you get your head around blockchains in general and around Ethereum specifically as it's the preeminent blockchain.

Ethereum: Blockchains, Digital Assets, Smart Contracts, Decentralized Autonomous Organizations


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


Ready to dive into smart contract development for the blockchain? With this practical guide, experienced engineers and beginners alike will quickly learn the entire process for building smart contracts for Ethereum--the open source blockchain-based distributed computing platform. You'llget up to speed with the fundamentals and quickly move into builder mode.

It's the perfect resource for people who want to break into the smart contract field but don't know where to start.

Hands-On Smart Contract Development with Solidity and Ethereum: From Fundamentals to Deployment


Ethereum represents the gateway to a worldwide, decentralized computing paradigm. This platform enables you to run decentralized applications (DApps) and smart contracts that have no central points of failure or control, integrate with a payment network, and operate on an open blockchain. With this practical guide, Andreas M. Antonopoulos and Gavin Wood provide everything you need to know about building smart contracts and DApps on Ethereum and other virtual-machine blockchains.

Discover why IBM, Microsoft, NASDAQ, and hundreds of other organizations are experimenting with Ethereum. This essential guide shows you how to develop the skills necessary to be an innovator in this growing and exciting new industry.

A guide to the operation and use of Ethereum and other EVM-compatible blockchains.

Mastering Ethereum


If you're a dev that's curious about crypto but not sure where to start -- this is the spot for you. Get access to project-based courses you'll love.

Learn about crypto by building cool stuff.

_buildspace


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


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


This specialization introduces blockchain, a revolutionary technology that enables peer-to-peer transfer of digital assets without any intermediaries, and is predicted to be just as impactful as the Internet. More specifically, it prepares learners to program on the Ethereum blockchain. The four courses provide learners with (i) an understanding and working knowledge of foundational blockchain concepts, (ii) a skill set for designing and implementing smart contracts, (iii) methods for developing decentralized applications on the blockchain, and (iv) information about the ongoing specific industry-wide blockchain frameworks.

The specialization covers a range of essential topics, from the cryptographic underpinnings of blockchain technology to enabling decentralized applications on a private Ethereum blockchain platform. 

It is ideal for programmers and designers involved in developing and implementing blockchain applications, and anyone who is interested in understanding its potential. 

Innovate with the Next Frontier in Technology. Learn how the blockchain is leading to a paradigm shift in decentralized application programming

Blockchain Specialization


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"


Cadena helps developers transition into web3 tuition free.
Learn by coding smart contracts, NFTs, tokens and more with our free courses. 
Then earn an NFT Certificate that unlocks exclusive job opportunities and perks.


Self paced tutorials to learn Web3 by building

Cadena


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)


An in-depth course about developing Full-Stack applications on Ethereum blockchain. It covers the basics of Ethereum and its infrastructure, Solidity programming language, setting up a development environment, testing smart contracts, creating libraries in Solidity, writing frontend for Dapps, and much more.


In-depth course about developing DApps on Ethereum

Developing Applications on Ethereum Blockchain


- Intensive, remote live courses and teaching.
- 50 person cohorts, daily sessions, weekly homework and projects, mentorship and support.
- You get placed in a crypto job after successfully completing a bootcamp!


Encode Club Bootcamps


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


Blockchain Foundation Program
Ethereum Fundamental Courses
Certified Blockchain Associate Program
Certified Hyperledger Fabric Developer Program

Kerala Blockchain Academy (KBA) offers training programs, consultancy services, and research activities in multiple domains of Blockchain Technology

Kerala Blockchain Academy


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


You may have heard a lot of jargon related to Web3: distributed ledgers, crypto, NFTs. But what’s revolutionary about the technology is more than the sum of the technical parts; it’s the power it gives you. 

Our lives are increasingly digital and interconnected. Our screens are our windows, our data defines our identity, and more and more of our time is spent online.

Historically, trust in society comes from subjective sources — from personal connections, platforms, institutions. At its core, Web3 is a new foundation for trust, where everything can be verified and you don’t need to place your trust in a single source or entity. 

This new common trust changes what the web is, and what you can do with it. It’s a web for you to own, for us to own. Where the printing press democratized the dissemination of information, Web3 democratizes the creation and dissemination of value. 

Through a series of interactive lessons, MetaMask Learn will show you what Web3 is, why it’s important to you, and how to use MetaMask along the way.

We want to share our enthusiasm for the Web3 of today, and empower you to build, explore, and participate in the world of tomorrow.

Through a series of interactive lessons, MetaMask Learn will show you what Web3 is, why it’s important to you, and how to use MetaMask along the way.

MetaMask Learn


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


Questbook is a decentralized university where learning is always free. We enable with our cryptoeconomics and a native erc20 coin that powers the ecosystem. 

Wikipedia is where the world collaborates on facts, StackOverflow is where the world collaborates on technical question answers, but where does the world collaborate on great tutorials? That is the gap that Questbook fills. All the content is created collaboratively by the community and contributors are compensated by tokens from Questbook and other retroactive grants. 

Questbook will train the next 10 Million web3 developers not only with bite sized content created by the community but also by making it accessible on a mobile phone. Users will be able to learn and write web3 programming directly from a mobile phone. No need for a laptop. This unlocks a huge market in India, Southeast Asia, Africa and Latin America where many people don’t have access to a laptop - but have a mobile phone. But, it also allows those with access to be able to learn on the go.


Questbook


Join a community of Web3 engineers & educators that can help you supercharge your way into Web3 development.


Acquire foundational knowledge to start your path to becoming a Web3 engineer.

Teach Yourself Web3


To bring more projects, ideas and developers to grow the EPNS ecosystem even faster.

## 📑 Program details

To be considered for a grant, a project needs to be **open source, positively impact EPNS** and **not be involved in a for-profit work**.

Who can apply for grants (not limited to):

- Developers
- Independent teams

The grants are open for beginners and experienced people. Whatever your level of familiarity with development, we'll start the conversation in order to try to help and find ways to grow your contribution over time. 🚀

The program will have initially a small scope, funding target bounties. Overtime, if the program proves effective, the grant allocation can grow in scope. 📈

To provide grants to projects, ideas, and events that benefit EPNS and its ecosystem

EPNS Grants


## What is MetaCartel DAO?

- Non-profit grants fund focused on creation and impact
- Funded mostly by individuals in the community

## What do we fund?

- DApps built on Ethereum
- New consumer facing use-case experiments
- Creation of new DAOs
- Cryptonative experiments
- Projects with longevity
- Community oriented initiatives

## What do we not fund?

- We don’t typically fund developer tooling or infrastructure
- We don’t typically fund anything that isn’t user facing


We provide grant funding to projects and operational support for early stage DApps

Metacartel Grants

A total pool of $100,000 USD worth of $MARSH has been set aside as funds for our Ecosystem Growth Program. This program will run throughout 2023, and winners will be selected every month. Participants can win a maximum amount of up to $10,000 USD!

To apply, click on the link below.
https://unmarshal.io/grants/


The Unmarshal Growth Fund is aimed to support budding web3 projects that utilise Unmarshal’s backend data infrastructure to help build their dApps.

Unmarshal Grants Program


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


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


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


✅ 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


A monorepo boilerplate code for typesafe full-stack Solidity development based on template-ethereum-contracts .

Full-stack dApp starter for solidity smart contract development

Fullstack monorepo template


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

Hardhat React boilerplate


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 Simple, Minimalist Template for Noir Projects.

A Simple, Minimalist Template for Noir Projects

nplate


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


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 SvelteKit starter template for Web3 Hackatons. Uses svelteWeb3 for the wallet interactions, has examples on how to use stores and ethers contracts.

SvelteKit starter template for Web3 Hackatons

SvelteKit  Web3 Hackaton Starter


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


So, you’ve heard about this Ethereum thing and are ready to venture down the rabbit hole? This post will quickly cover some blockchain basics, then get you interacting with a simulated Ethereum node – reading block data, checking account balances, and sending transactions. Along the way, we’ll highlight the differences between traditional ways of building apps and this new decentralized paradigm.

This post will cover some blockchain basics, then get you interacting with a simulated Ethereum node using Python

A Python Guide to Ethereum, Pt. 1


It's not a secret that passwords are a relic from a different century. However, modern cryptography provides us with far better means to authenticate with applications, such as Ethereum's Secp256k1 public-private key pairs. This article is a complete step-by-step deep-dive to securely establish a Ruby-on-Rails user session with an Ethereum account instead of a password. In addition, it aims to explain how it's done by providing code samples and expands on the security implications.

This article is a complete step-by-step deep-dive to securely establish a Ruby-on-Rails user session with an Ethereum account instead of a password.

Authenticating Rails users with MetaMask 


Becoming a blockchain engineer is the most fun, rewarding, and exhilarating choice I’ve and my colleagues have ever made. And we’ve already blazed the trail for you to get started! In this article, we will show you exactly how to learn to become a blockchain engineer, from beginner to professional.

Spoiler alert, here is the exact blueprint we are going to cover to get you to a successful blockchain engineer:

1. Understand why you should become a blockchain engineer
2. Take a Blockchain Course
3. Join a Hackathon, the Community, & Build
4. Start your own protocol, Take a job, Freelance & Contribute

If you make it this far, you’ve done it! Although, I’ll add a bonus step 5 that we will talk about soon.

5. You’ve made it! Keep learning!

That’s it! These are the exact steps you need to take to become a blockchain engineer!

Become a blockchain, solidity, and smart contract engineer by following these steps

Become a Blockchain Engineer


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


My Twitter feed has tons of avatar profile pictures, articles are coming out daily showcasing some large NFT sales, and people are earning money with their in-game creatures...

I guess this means it's time to go down the NFT rabbit hole. So let's get to it!

This article introduces NFT's and guides you through creating your NFT collection on Ethereum using solidity.

Create your own NFT collection on Ethereum w/Solidity


In-depth pieces on designing patterns and workflows that help your users navigate Ethereum.

Research-led guides for creating user-friendly blockchain experiences.

Dapp UX guides

Ethereum Dev Speed Run


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


Have you ever wondered what lies under the hood of the Ethereum network? How the transaction is made. How the data was passing around. And what is it made of?

This blog is intended to be a very basic introduction to how to look at Ethereum Calldata (Or any other EVM based Calldata) we're going to look at how it structures, what it keeps, and how it can be categorized into what ways.

The highlight of this article is we will also be revealing how to generate Ethereum Calldata without writing a single line of code - the Laika🐶 way!


This article explains what Ethereum Calldata is and how it's structured.

Get to know Ethereum Calldata

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

Getting started with SSX


Odds are you’ve heard about the Ethereum blockchain, whether or not you know what it is. It’s been in the news a lot lately, including the cover of some major magazines, but reading those articles can be like gibberish if you don’t have a foundation for what exactly Ethereum is. So what is it? In essence, a public database that keeps a permanent record of digital transactions. Importantly, this database doesn’t require any central authority to maintain and secure it. Instead it operates as a “trustless” transactional system — a framework in which individuals can make peer-to-peer transactions without needing to trust a third party OR one another.

Still confused? That’s where this post comes in. My aim is to explain how Ethereum functions at a technical level, without complex math or scary-looking formulas. Even if you’re not a programmer, I hope you’ll walk away with at least better grasp of the tech. If some parts are too technical and difficult to grok, that’s totally fine! There’s really no need to understand every little detail. I recommend just focusing on understanding things at a broad level.

Many of the topics covered in this post are a breakdown of the concepts discussed in the yellow paper. I’ve added my own explanations and diagrams to make understanding Ethereum easier. Those brave enough to take on the technical challenge can also read the Ethereum yellow paper.

Many of the topics covered in this post are a breakdown of the concepts discussed in the yellow paper. I’ve added my own explanations and diagrams to make it easier.

How does Ethereum work, anyway?


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


This week I tried to find the best way to interact with ethers contract. I think I kinda find the sweet spot.

For instancing I found that derived stores are the best, in theory your store is going to subscribe to your provider store and when the provider updates the contract is going to be re instanced with the signer instead of the json provider, if you don’t need to login with Metamask...

This week I tried to find the best way to interact with ethers contract. I think I kinda find the sweet spot.

How to wrap your ethers contracts in svelte stores.


I was recently asked in an online forum for my recommendations on resources for developers looking to learn blockchain development, and I started writing an answer, but it sort of kept on going and going. The results are the article in front of you.

This isn’t an article about the advantages and disadvantages of building on a blockchain. It’s just a guide about the things  you’ll need to learn once you’ve decided to learn blockchain, and what the steps of making a blockchain application look like. Not everything should be on a blockchain.

There are a lot of different resources out there, and as with any tech stack choices, things can get opinionated. There is still a need, especially with regards newcomers in the field, to direct to the right tools. I'll try to find a middle ground in between my opinions and a general list.

A Guide for Developers Interested in Learning Blockchain Development

Learning Blockchain Development


I'd been hearing a lot about Web3 and reluctantly did a deep dive on it over the weekend. What really caught my eye is the idea of decentralizing the control and ownership that currently only a few companies have.

In the Web3 world, this wouldn't happen because of the decentralized nature of Web3 applications, no single entity on the network can block anyone from submitting transactions, taking away control to dictate what is and isn't allowed away from payment processors and the entities that govern them.

An introduction to blockchain, smart contracts, and decentralized apps.

Lessons from creating a Web3 app


My web3 experience started from Svelte but because I didn’t know how to use the window[‘ethereum’] global had to move to React so I could use the web3-react library. I got tired of writing useEffect() so I taught how hard will be to make a library like web3-react but for svelte. It wasn’t exactly that hard, I don’t know why no one did it before me.

SvelteWeb3 is an adapter for web3-react connectors, at first I wanted to make my own connectors but after some thinking I realized that would be useless and it would add more dependencies.

My web3 experience started from Svelte but because I didn’t know how to use the window[‘ethereum’] global had to move to React so I could use the web3-react library.

Making DAPPs using SvelteWeb3

We review use cases and implications of Meta-Transactions.

Meta-Transactions


ENS now supports NFT avatars for your profile.

What this means is you can now set an NFT you own as the avatar of your ENS profile, and dapps can then display it alongside your ENS name.

you can now set an NFT you own as the avatar of your ENS profile, and dapps can then display it alongside your ENS name.

NFT avatars for ENS profiles


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


Take Medium, for example, a simple blogging site that lets users publish their own content and interact with content from others.

As a web 2.0 application, it may sound simple, but there’s a lot that goes into Medium’s architecture to make it all possible:

First, there must be a place to store essential data, such as users, posts, tags, comments, likes, and so on. This requires a constantly updated database.

Second, backend code (written in a language like Node.js, Java, or Python) must define Medium’s business logic. For example, what happens when a new user signs up, publishes a new blog, or comments on someone else’s blog?

Third, frontend code (typically written in JavaScript, HTML, and CSS) must define Medium’s UI logic. For instance, what does the site look like, and what happens when a user interacts with each element on the page?

Putting it all together, when you write a blog post on Medium, you interact with its frontend, which talks to its backend, which talks to its database. All of this code is hosted on centralized servers and sent to users through an internet browser. This is a good high-level summary of how most Web 2.0 applications work today.

But all of that’s changing.

Blockchain technology has unlocked an exciting new direction for Web 3.0 applications. In this article, we're going to focus on what the Ethereum blockchain brings to the table.

The architecture of Web 3.0 applications (or 'DApps') are completely different from Web 2.0 applications.

The Architecture of a Web 3.0 application


I recently joined Edge & Node as a Developer Relations Engineer and have been diving deeper into smart contract development with Ethereum. I have settled upon what I think is the best stack for building full stack dApps with Solidity:

▶︎ Client Framework - React
▶︎ Ethereum development environment - Hardhat
▶︎ Ethereum Web Client Library - Ethers.js
▶︎ API layer - The Graph Protocol

Building Full Stack dApps with React, Ethers.js, Solidity, and Hardhat

#dapp

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