Blockchain Developer, Smart Contract, & Solidity Course - Powered By AI - Beginner to Expert Course | Foundry Edition 2023
Welcome to the repository for the Blockchain Developer, Smart Contract, & Solidity Course | Powered By AI | Beginner to Expert Course | Foundry Edition 2023
| Lessons 0 - 6 | Lessons 7 - 11 | Lessons 12 - 15 |
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Resources
Lesson 1: Blockchain Basics
- What is a Blockchain? What does a blockchain do?
- The Purpose Of Smart Contracts
- Other Blockchain Benefits
- What have Smart Contracts done so far?
- Making Your First Transaction
- Gas I: Introduction to Gas
- How Do Blockchains Work?
- Signing Transactions
- Gas II
- Gas II Summary
- High-Level Blockchain Fundamentals
Lesson 4: Remix Fund Me
- Introduction
- Setup
- Sending ETH through a function
- Reverts
- Getting real world price data (Chainlink)
- Quick recap I
- Interfaces
- AI Help III
- Importing from NPM / GitHub
- Getting Prices from Chainlink
- More solidity math
- msg.sender
- Quick recap II
- Library
- SafeMath
- For Loop
- Resetting an array
- Transfer, Send, and Call
- Constructor
- Modifiers
- Testnet Demo
- Advanced Solidity
Lesson 6: Foundry Simple Storage
- Introduction
- Installation & Setup (MacOS & Linux)
- Local Development Introduction
- Foundry Install
- VSCode Setup II
- Foundry Setup
- Formatting Solidity in VSCode
- Compiling in Foundry
- Deploying to a local chain I (Anvil or Ganache)
- Adding another network to metamask
- Deploying to a local chain II (Forge Create)
- Private Key Rant I
- Deploying to a local chain III (Forge Script)
- What is a transaction (But actually)
- Private Key R ant II
- Can you Encrypt a Private Key -> a keystore in foundry yet??
- ThirdWeb Deploy
- Private Key Rant Summary:
- Cast Send
- Deploying to a testnet or a mainnet
- Verifying a contract the manual way
- Cleaning up the project
- Alchemy
- Summary
Lesson 7: Foundry Fund Me
- Introduction
- Setup
- Testing Introduction
- Setup Continued
- Tests
- Debugging Tests I
- Advanced Deploy Scripts I
- Forked Tests
- Refactoring I: Testing Deploy Scripts
- Refactoring II: Helper Config
- Refactoring III: Mocking (continued)
- Magic Numbers
- Break time!
- More Cheatcodes
- More Coverage
- Chisel
- Gas: Cheaper Withdraw
- Storage
- Gas: Cheaper Withdraw (continued)
- Interactions.s.sol
- Makefile
- Pushing to GitHub
- 🐸🐦 Tweet Me (add your repo in)!
- Recap
Lesson 9: Foundry Smart Contract Lottery
- Introduction
- Raffle.sol Setup
- Solidity Contract Layout
- Custom Errors
- Events
- block.timestamp
- Chainlink VRF
- Implementing Chainlink VRF - Introduction
- Implementing Chainlink VRF - The Request
- Implementing Chainlink VRF - The FulFill
- Chainlink VRF Recap
- Enum
- Resetting an array
- Note on building
- CEI
- Introduction to Chainlink Automation
- Implementing Chainlink Keepers - checkUpkeep
- Implementing Chainlink Keepers - checkUpkeep continued
- Implementing Chainlink Keepers - performUpkeep
- Mid-Lesson Recap
- Tests & Deploy Script Setup
- Tests & Deploy Script Continued
- Lots of Tests
- Create Subscription Script
- Create Subscription from the UI
- Fund Subscription Script
- Add Consumer Script
- More Tests
- PerformUpkeep Tests
- Getting Event Data into Foundry Scripts
- Intro to Fuzz tests
- One Big Test
- Passing the private key to vm.startBroadcast
- Integrations Test
- Testnet Demo - Makefile setup
- Testnet Demo - The Demo
- Console.log Debugging
- forge test --debug
- Recap
Lesson 11: Foundry NFTs | MoodNFT
- Introduction
- What is an NFT?
- Foundry Setup
- IPFS
- Using IPFS
- Basic NFT: Deploy Script
- Basic NFT: Tests
- Basic NFT: Interactions
- Basic NFT: Testnet Demo
- The issue with IPFS & HTTPS TokenURI NFTs
- What is an SVG?
- SVG NFT: Introduction
- SVG NFT: Encoding the NFT
- SVG NFT: Flipping the mood
- SVG NFT: Deploy Script
- SVG NFT: Debugging practice & some notes
- SVG NFT: Anvil Demo
- Advanced: EVM Opcodes, Encoding, and Calling
- Verifying Metamask Transactions
- Filecoin & Arweave
- Lesson 11 Recap
Lesson 12: Foundry DeFi | Stablecoin (The PINNACLE PROJECT!! GET HERE!)
- What is DeFi?
- Code Walkthrough
- What is a stablecoin (But actually)
- DecentralizedStableCoin.sol
- DSCEngine.sol Setup
- Deposit Collateral
- Mint DSC
- Testing while developing
- depositCollateralAndMintDsc
- redeemCollateral
- Liquidate
- Leveling up your testing skillz
- Challenge: Code coverage above 80% for DSCEngine.sol
- Fuzz (Invariant) Testing
- Open-based Fuzz tests
- Handler-based Fuzz tests
- Price Feed Handling
- OracleLib
- Note on audit preparedness
- Recap
- Lens Protocol
- Recommended Testnet: Sepolia
- Recommended DevOps: foundry-devops
- Main Faucet: https://faucets.chain.link
- Backup Faucet: https://sepoliafaucet.com/
⚠️ All code associated with this course is for demo purposes only. They have not been audited and should not be considered production ready. Please use at your own risk.
- AI Frens
- ChatGPT
- Just know that it will often get things wrong, but it's very fast!
- Phind
- Like ChatGPT, but it searches the web
- Bard
- Other AI extensions
- ChatGPT
- Github Discussions
- Ask questions and chat about the course here!
- Stack Exchange Ethereum
- Great place for asking technical questions about Ethereum
- Peeranha
- Decentralized Stack Exchange!
These are 100% optional to do.
After every lesson, you'll see two QR codes. Those codes will send you to an NFT deployed to Sepolia or Arbitrum. They contain a challenge for you to solve, and in return, you'll be given an AWESOME NFT.
IF YOU DECIDE TO MINT THE REAL NFT:
- We didn't audit the NFT, so if you want to make sure you'll be safe, interact with the contract using a burner wallet (a wallet with very little money that you don't use for anything else)
- In fact... Get good at interacting with wallets from a burner wallet
- Read my Tweet thread on basic wallet safety
- It might be a good idea to wait till later in the course when we teach you about verifying metamask transactions.
- Feel free to mint NFTs on sepolia without worrying about the above
- We didn't show you how to bring ETH -> Arbitrum, but the process would be:
- Send ETH -> one of your wallets like:
- Use the Arbitrum Bridge
⭐️ (0:00:00) | Lesson 0: Welcome!
- Follow the repository: While going through the course be 100% certain to follow along with the github repository. If you run into in an issue check the chronological-updates in the repo.
- Be Active in the community: Ask questions and engage with other developers going through the course in the discussions tab, be sure to go and say hello or gm! This space is different from the other industries, you don't have to be secretive; communicate, network and learn with others :)
- Learn at your own pace: It doesn't matter if it takes you a day, a week, a month or even a year. Progress >>> Perfection
- Take Breaks: You will exhaust your mind and recall less if you go all out and watch the entire course in one sitting. Suggested Strategy every 25 minutes take a 5 min break, and every 2 hours take a longer 30 min break
- Refer to Documentation: Things are constantly being updated, so whenever Patrick opens up some documentation, open it your end and maybe even have the code sample next to you.
- Use ChatGPT and/or the course chat
⭐️ (0:13:54) | Lesson 1: Blockchain Basics
- Bitcoin Whitepaper
- Ethereum Whitepaper
- What is a Smart Contract?
- Nick Szabo
- Hybrid Smart Contracts
- Blockchain Oracles
- Terminology
- Web3
- What is a blockchain
⌨️ (0:24:26) | The Purpose Of Smart Contracts
- 🎥 Original Video
- 🦬 My ETH Denver Talk
- 🍔 McDonalds Scandal
- ⛓ More on the evolution of agreements
- ✍️ What is a Smart Contract?
- 🧱 How does a blockchain work?
- 🔮 Chainlink & Oracles
⌨️ (0:39:53) | Other Blockchain Benefits
- Decentralized
- Transparency & Flexibility
- Speed & Efficiency
- Security & Immutability
- Counterparty Risk Removal
- Trust Minimized Agreements
⌨️ (0:44:20) | What have Smart Contracts done so far?
⌨️ (0:46:55) | Making Your First Transaction
- Metamask Download Link
- Etherscan
- Sepolia Etherscan
- Sepolia Faucet (Check the link token contracts page)
- NOTE: The Chainlink documentation always has the most up to date faucets on their link token contracts page. If the faucet above is broken, check the chainlink documentation for the most up to date faucet.
- OR, use the Sepolia ETH Faucet, just be sure to swap your metamask to Sepolia!
⌨️ (1:06:16) | Gas I: Introduction to Gas
⌨️ (1:15:39) | How Do Blockchains Work?
⌨️ (1:33:09) | Signing Transactions
- Block Rewards
- Advanced Gas
- EIP 1559
- GWEI, WEI, and ETH
⌨️ (1:51:36) | High-Level Blockchain Fundamentals
💻 Code: https://github.com/cyfrin/remix-simple-storage-f23
⭐️ (2:10:42) | Lesson 2: Welcome to Remix - Simple Storage
⌨️ () Setting Up Your First Contract
- Versioning
- Take notes in your code!
- What is a software license
- SPDX License
- Compiling
- Contract Declaration
- Types & Declaring Variables
uint256,int256,bool,string,address,bytes32- Solidity Types
- Bits and Bytes
- Default Initializations
- Comments
⌨️ () Basic Solidity Functions
- Functions
- Deploying a Contract
- Smart Contracts have addresses just like our wallets
- Calling a public state-changing Function
- Visibility
- Gas III | An example
- Scope
- View & Pure Functions
⌨️ () Basic Solidity Arrays & Structs
- Structs
- Intro to Storage
- Arrays
- Dynamic & Fixed Sized
pusharray function
⌨️ () Basic Solidity Errors & Warnings
- Yellow: Warnings are Ok
- Red: Errors are not Ok
⌨️ () Basic Solidity Memory, Storage, & Calldata (Intro)
- 6 Places you can store and access data
- calldata
- memory
- storage
- code
- logs
- stack
⌨️ () Deploying your First Contract
- A testnet or mainnet
- Connecting Metamask
- Find a faucet here
- See the faucets at the top of this readme!
- Interacting with Deployed Contracts
⌨️ () The EVM & A Recap of Lesson 2
- The EVM
💻 Code: https://github.com/cyfrin/remix-storage-factory-f23
⭐️ (3:29:58) | Lesson 3 | Storage Factory
⌨️ () Importing Contracts into other Contracts
⌨️ () Interacting with other contracts
- To interact, you always need: ABI + Address
- ABI
💻 Code: https://github.com/Cyfrin/remix-fund-me-f23
⭐️ (4:09:08) | Lesson 4 | Fund Me
- What is a blockchain oracle?
- What is the oracle problem?
- Chainlink
- Chainlink Price Feeds (Data Feeds)
- Chainlink VRF
- Chainlink Keepers
- Chainlink API Calls
- Importing Tokens into your Metamask
- Request and Receive Chainlink Model
- Multiply before you divide
- tuple
- Floating Point Numbers in Solidity
- Type Casting
- Gas Estimation Failed
- Someone should make an article explaining this error
- msg.sender
- named mappings
- For Loop
/* */is another way to make comments
- Immutable
- Constant
- Current ETH Gas Prices
- Don't stress about gas optimizations! (yet)
- Naming Conventions
DO NOT SKIP THIS!!
⭐️ (6:00:00) | Lesson 5 | AI Prompting
- It's a good idea to ask your AI buddy to format your questions in markdown *
- Special Guest Austin
💻 Code: https://github.com/Cyfrin/foundry-simple-storage-f23
⭐️ (6:00:00) | Lesson 6 | Foundry Simple Storage
- Special Guest Vasiliy
- WSL
- When working in WSL, use Linux commands instead of Windows commands
- TroubleShooting
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
⚠️ Please use Gitpod as an absolute last resort
- Gitpod
- If using this, NEVER share a private key with real money on Gitpod
- Ideally you figure out the MacOS, Linux, or Windows install though
CMD + KorCTRL + Kclears the terminalmkdir ethers-simple-storage-fcccode .to open VSCode in a new VSCode window
- CoPilot
- Copilot labs
- Hardhat Solidity Extension
- VSCodium
mkdir foundry-f23
- FreeCodeCamp Bash
- Format your solidity code with in your
settings.json
"[solidity]": {
"editor.defaultFormatter": "NomicFoundation.hardhat-solidity"
},
"[javascript]":{
"editor.defaultFormatter": "esbenp.prettier-vscode"
}- 2 Ways to deploy:
-
forge create
-
forge script
-
history -c
cast --to-base 0x01 deccast sendsource .env
A: No
- Special Guest Ciara
- nodejs install
- npm install
- thirdweb
Summary:
When you look to deploy
with real money, you should use either:
1. A password encrypted keystore
2. Something like thirdweb deploy
The idea is you never want to have
your private key or password
ANYWHERE written in plain text
(Aka, you always want it encrypted)
forge fmtREADME.md
🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊
🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊
Video 2: https://youtu.be/sas02qSFZ74
⭐️ (0:00:00) | Lesson 7: Foundry Fund Me
💻 Code:https://github.com/Cyfrin/foundry-fund-me-f23
- 4 types of testing:
1. Unit: Testing a single function
2. Integration: Testing multiple functions
3. Forked: Testing on a forked network
4. Staging: Testing on a live network (testnet or mainnet)
- block.chainid
- Chain ID List
- 11155111 is ETH Sepolia
- 1 is ETH Mainnet
- Mocking
- Chainlink Github
- Multiple Versions of Solidity
Take a break!
- State tree testing
- Arrange, Act, Assert
- hoax
- uint160 -> address
- vm.startPrank
- Gas Reporter
forge snapshotvm.txGasPricegasLeft()tx.getprice
** Advanced **
cast storage
- Opcodes
- Opcodes by Gas
- Opcodes by Gas
- Append
s_to storage variables - Append
i_to immutable variables - Caps lock and underscore constant variables
- Chainlink Solidity Style Guide
- Add these to your
.gitignore.envlib/broadcast/
- Git Docs
- GitHub docs
- Github Quickstart
- What is Git?
- The quickstart that we follow in the video
- Learn about git and GitHub
⭐️ (2:37:02) | Lesson 8: HTML Fund Me
💻 Code: https://github.com/Cyfrin/html-fund-me-f23
⭐️ (3:04:09) | Lesson 9: Smart Contract Lottery
💻 Code: https://github.com/Cyfrin/foundry-smart-contract-lottery-f23
- Raffle.sol Setup
// Layout of Contract:
// version
// imports
// errors
// interfaces, libraries, contracts
// Type declarations
// State variables
// Events
// Modifiers
// Functions
// Layout of Functions:
// constructor
// receive function (if exists)
// fallback function (if exists)
// external
// public
// internal
// private
// internal & private view & pure functions
// external & public view & pure functions
- Custom Errors in Solidity
- Introduction to Events
- Events & Logging Video
- Events & Logging in Hardhat
- Introduction to Chainlink VRF
- Special Guest Richard
- Chainlink VRFv2 Docs
- Chainlink VRFv2 Walkthrough
- Chainlink Contracts
- Implementing Chainlink VRF
- Modulo
- Chainlink Automation Docs
- Chainlink Automation Walkthrough
- Enum
- block.timestamp
forge coverage --report debug
- Expecting Custom Errors
vm.recordLogs
- Chainlink VRF: 2 LINK
- Chainlink Keepers: 8 LINK
⭐️ (7:07:04) | Lesson 10: ERC20s
💻 Code: https://github.com/Cyfrin/foundry-erc20-f23
- What is an EIP?
- EIPs codebase
- Video (using brownie/python)
- EIP-20
- ERC-677
- EIP-777
.github
- Openzeppelin
- Openzeppelin Contracts
- Solmate (Openzeppelin alternative)
⭐️ (7:40:56) | Lesson 11: NFTs
💻 Code: https://github.com/Cyfrin/foundry-nft-f23
- Video
- [Optional: All on Chain SVG NFT]
- EIP-721
- TokenURI
- Pudgy Penguin Example
- Comparing strings in solidity
chisel
- abi.encode
- abi.encodePacked Thanks to Alex Roan for his help on this session!
- Example Contract Creation Transaction What REALLY is the ABI?
- EVM Opcodes
- More EVM Opcodes
- Solidity Cheatsheet
- abi.encode vs abi.encodePacked
- Function Selector
- Function Signature
- Check the address
- Check the function selector
- Decode the calldata
- Special Guest Ally
🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊
🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊
💻 Code: https://github.com/Cyfrin/foundry-defi-stablecoin-f23
⭐️ (0:00:00) | Lesson 12: DeFi Stablecoins
- What is DeFi?
- DefiLlama
- Bankless
- MEV
- Aave
- My Previous Aave Video on Shorting Assets
- DAI
- Uniswap
- Maximal Extractable Value (MEV)
- Other DeFi Examples:
- Special Guest Nader
- Lens Protocol
QR Code for Lesson 12 Arbitrum:
QR Code for Lesson 12 Arbitrum:
💻 Code: https://github.com/Cyfrin/foundry-upgrades-f23
⭐️ (4:47:00) | Lesson 13: Upgradable Contracts & Proxies
- Parameter
- Social Migrate
- Proxy
- UUPS vs Transparent
- Abstract Contracts
Plutocracy is bad! Don't default to ERC20 token voting!!
💻 Code: https://github.com/Cyfrin/foundry-dao-f23
⭐️ (6:05:45) | Lesson 14 | DAOs & Governance
- What is a DAO?
- Special Guest Juliette
- How to build a DAO
- That's Patrick
- PY Code
- Python Video
- Special Guest Harrison
Developers 100% should know all about this! Don't leave the course without at least watching this section!
🖥️ Code: https://github.com/PatrickAlphaC/denver-security
⭐️ (7:21:12) | Lesson 15 | Security & Auditing
- Common Attacks
- Best Practices
- Attacks
- Damn Vulnerable Defi
- Ethernaut
- Top Smart Contract Auditors
- Some Smart Contract Auditors:
🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊 Completed The Course! 🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊🎊
- Top 10 learning resources
- Patrick Collins
- CryptoZombies
- Alchemy University
- Speed Run Ethereum
- Ethereum.org
Be sure to check out project grant programs!
And make today an amazing day!
Transparency is important! So we want to disclose any potential conflicts that might have affected my judgement so you can pick tools that are right for you. Patrick is co-founder of Alpha Chain, a blockchain infrastructure company. Alpha Chain runs chainlink, ethereum, binance, polygon, harmony, solana, moonbeam, and moonriver blockchain services. Alpha Chain often works with Alchemy and recieves discounted servies. Patrick is co-founder of Cyfrin, and they do smart contract security & auditing services. Patrick is a co-founder of Chain Accel, who are an advisor on the Peeranha project. Patrick is an advisor on the Chainlink project. The Cyfrin team often does buisness on the Arbitrum L2.
Because of all this, I have added alternatives to each section where we suggest a tool. This video & course was created and sponsored solely by the Cyfrin team.
Thanks to everyone who is taking, participating in, and working on this course. It's been a passion project and a data dump of everything I've learnt in the web3 space to get you up to speed quickly. Also, a big thank you to Cyfrin & Chain Accel for encouraging this course to come to light, and many, many, many people from the community.
And thanks to the Cyfrin team for making this possible!
