Web3 Learning Journey

A comprehensive repository documenting my blockchain and smart contract development journey through Alchemy University's Ethereum Bootcamp and Patrick Collins' Solidity courses.

📚 Learning Platforms

1. Alchemy University - Ethereum Developer Bootcamp

An intensive program covering blockchain fundamentals, Ethereum development, and decentralized application (dApp) creation.

2. Patrick Collins - Solidity & Smart Contract Development

Following Patrick Collins' comprehensive blockchain development course, focusing on Hardhat, smart contract testing, and best practices.

🗂️ Repository Structure

Alchemy Ethereum Bootcamp

Week 1: ECDSA & Digital Signatures

Project: ECDSA Node

Implementation of Elliptic Curve Digital Signature Algorithm
Client-server architecture for transaction signing
Understanding public key cryptography and wallet authentication

Week 2: Blockchain & Cryptography Fundamentals

Project: Gift List (Merkle Trees)

Merkle tree implementation and verification
Proof generation and validation
Cryptographic data structures in blockchain

Week 3: Ethereum & JSON-RPC

Projects:

JSON-RPC Activity: Interacting with Ethereum nodes
Block Explorer: Building a blockchain data viewer
Transaction Signing: Understanding and implementing transaction flows

Week 4: Smart Contracts with Hardhat

Topics Covered:

Hardhat development environment setup
Contract compilation and deployment
Testing smart contracts
Modifying contract state
Contract interactions with ethers.js

Projects:

au-hardhat-practice/: Core Hardhat concepts
modify-contract-state/: State management in contracts
Test_exercise/: Writing comprehensive tests
Work with contract/: Contract interaction patterns

Week 5: Advanced Smart Contract Development

Project: Contract Puzzles & Escrow

Solving smart contract challenges
Implementing escrow functionality with Hardhat
Security considerations and best practices
Local Hardhat Games: Interactive learning challenges

Week 6: Token Standards

Topics:

ERC-20 token implementation
Token creation and deployment
ERC-20 Token Indexer project
NFT minting and standards

Week 7: Advanced Patterns

Topics:

Governance contracts
Upgradeable contracts
Proxy patterns (Transparent, UUPS)
Storage layouts and collision avoidance

Patrick Collins Course

1. Simple Storage (Ethers.js)

Location: ethers-simple-storage-fcc/

Basic interaction with smart contracts using ethers.js
Contract deployment from JavaScript
Environment variable management and key encryption
Reading and writing to blockchain

Key Files:

deploy.js: Contract deployment script
encryptKey.js: Secure key management
SimpleStorage.sol: Basic storage contract

2. Hardhat Simple Storage

Location: Git_hardhat-simple-storage-fcc/ & my_hardhat-simple-storage-fcc/

Hardhat framework fundamentals
Testing with Chai and Mocha
Task automation
Gas reporting and optimization
Code coverage analysis

Features:

Custom Hardhat tasks
Comprehensive test suites
Coverage reports
Gas consumption analysis

3. Hardhat Fund Me

Location: hardhart-fund-me-fcc/

Building a crowdfunding/donation contract
Chainlink price feeds integration
Mock contracts for testing
Multi-network deployment
Deployment scripts with hardhat-deploy

Key Concepts:

Price feed oracles
Withdrawal patterns
Owner-only functions
Testing with fixtures
Network configuration

🛠️ Technologies & Tools

Blockchain: Ethereum, EVM-compatible chains
Languages: Solidity, JavaScript
Frameworks: Hardhat, Ethers.js
Testing: Chai, Mocha, Waffle
Tools:
- Alchemy SDK & API
- Chainlink (Price Feeds, VRF)
- OpenZeppelin contracts
- Hardhat plugins (deploy, gas-reporter, coverage)

🎯 Key Learning Outcomes

Blockchain Fundamentals

✅ Cryptographic primitives (hashing, signatures)
✅ Blockchain architecture and consensus
✅ Transaction lifecycle and validation
✅ Merkle trees and data structures

Smart Contract Development

✅ Solidity programming and best practices
✅ Contract design patterns
✅ Security considerations
✅ Gas optimization techniques
✅ Upgradeable contract patterns

Development Tools

✅ Hardhat development environment
✅ Contract testing and coverage
✅ Deployment automation
✅ Network configuration
✅ Contract verification

Token Standards

✅ ERC-20 token implementation
✅ NFT standards and minting
✅ Token indexing and tracking

Advanced Topics

✅ Oracle integration (Chainlink)
✅ Proxy patterns and upgrades
✅ Governance mechanisms
✅ DeFi patterns (escrow, crowdfunding)

🚀 Getting Started

Prerequisites

node --version  # v16+ recommended
npm --version   # v8+

Installation

Clone the repository

git clone https://github.com/Alexander-NM/web3.git
cd web3

Navigate to a specific project

cd "Alchemy_eth_bootcamp/Week_4/au-hardhat-practice"
# or
cd "Patrick Collins/hardhart-fund-me-fcc"

Install dependencies

npm install

Set up environment variables

cp .env.example .env
# Add your private keys, API keys, etc.

Running Projects

Compile contracts:

npx hardhat compile

Run tests:

npx hardhat test

Deploy locally:

npx hardhat run scripts/deploy.js --network localhost

Generate coverage:

npx hardhat coverage

📝 Project Highlights

🏆 Merkle Tree Gift List

A practical implementation of Merkle trees for efficient verification, demonstrating:

Proof generation and verification
Client-server architecture
Cryptographic data structures in action

🏆 ECDSA Node

Secure transaction system using elliptic curve cryptography:

Digital signature generation
Transaction validation
Public key infrastructure

🏆 Hardhat Fund Me

Full-featured crowdfunding contract:

Chainlink price feed integration
Multi-network deployment
Comprehensive testing suite
Gas-optimized withdrawals

🔒 Security Notes

Never commit private keys or sensitive data
Use .env files for secrets (add to .gitignore)
Always test contracts thoroughly before mainnet deployment
Follow smart contract security best practices
Use established libraries (OpenZeppelin) when possible

📚 Resources

Alchemy University

Patrick Collins

Additional Resources

🎓 Course Progress

🤝 Contributing

This is a personal learning repository, but suggestions and feedback are welcome! Feel free to:

Open issues for questions or discussions
Suggest improvements to implementations
Share additional learning resources

📄 License

This repository is for educational purposes. Individual projects may have their own licenses.

🙏 Acknowledgments

Alchemy University for the comprehensive Ethereum Developer Bootcamp
Patrick Collins for the excellent free blockchain development course
OpenZeppelin for secure smart contract libraries
Chainlink for decentralized oracle solutions
The entire Web3 community for open-source contributions

Happy Learning! 🚀

This repository represents an ongoing journey in blockchain development. Each project builds upon previous knowledge, creating a comprehensive understanding of Web3 technologies.

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
Alchemy_eth_bootcamp		Alchemy_eth_bootcamp
Patrick Collins		Patrick Collins
.gitattributes		.gitattributes
.gitignore		.gitignore
README.md		README.md

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