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

Harvard CS50


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 


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-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


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

We review use cases and implications of Meta-Transactions.

Meta-Transactions


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


https://www.youtube.com/watch?v=M576WGiDBdQ

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), python and solidity, Chainlink, Ethereum, upgradable smart contracts, and full stack blockchain development.   

Some of the technologies covered are:
- BrownieEth
- solidity
- IPFS
- AlchemyPlatform
- Infura
- MetaMask
- Etherscan
- EthereumRemix
- Chainlink
- web3.py
- Ganache
- AaveAave
- OpenZeppelin
- NFT 
- ERC20 
- Opensea
- Pinatacloud
 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-py.

This course will give you a full introduction into all of the core concepts in blockchain, smart contracts, solidity, NFTs/ERC721s, upgrades, and more.

Solidity, Blockchain, and Smart Contract Course – Beginner to Expert Python Tutorial

A video tutorial for JavaScript developers

WalletConnect Sign


The ultimate web3 product design resource. Our platform curates the best web3 product and design examples. Learn from tried and tested web3 products, discover solutions, and design better user flows.

Curating the best design examples and journeys from leading web3 products.

#ux & design

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