Merkle Proofs

What are Merkle trees, proofs and roots?

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Course Overview

About the course

What you'll learn

Advanced smart contract development

How to develop a stablecoin

How to develop a DeFi protocol

How to develop a DAO

Advanced smart contracts testing

Fuzz testing

Manual verification

Course Description

Who is this course for?

Engineers
Smart Contract Security researchers

Potential Careers

Web3 Developer Relations

$85,000 - $125,000 (avg. salary)

Web3 developer

$60,000 - $150,000 (avg. salary)

Smart Contract Engineer

$100,000 - $150,000 (avg. salary)

Smart Contract Auditor

$100,000 - $200,000 (avg. salary)

Security researcher

$49,999 - $120,000 (avg. salary)

Meet your instructors

Patrick Collins

Founder at Cyfrin

Web3 engineer, educator, and Cyfrin co-founder. Patrick's smart contract development and security courses have helped hundreds of thousands of engineers kickstarting their careers into web3.

Guest lecturers:

Juliette Chevalier

Lead Developer relations at Aragon

Ciara Nightingale

Developer relations at Thirdweb

Vasiliy Gualoto

Developer relations at Cyfrin

Nader Dabit

Director of developer relations at Avara

Ally Haire

Developer relations at Protocol Labs

Harrison

Founder at GasliteGG

Vitto Rivabella

Lead Developer relations at Cyfrin

Last updated on September 2, 2024

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Solidity Developer

Advanced Foundry

Section 1: Develop an ERC20 Crypto Currency

Duration: 36min

Section 2: Develop an NFTs Collection

Duration: 3h 06min

Section 3: Develop a DeFi Protocol

Duration: 5h 02min

Section 4: Airdrop and Signatures

Duration: 2h 47min

1. Introduction

An introduction to the Merkle Airdrop and Signatures project including a code walkthrough. What is an airdrop? Duration: 4min

2. Project Setup

Setting up the Foundry project and creating an ERC20 token to airdrop. Duration: 8min

3. Merkle Proofs

What are Merkle trees, proofs and roots? Duration: 6min

4. Base Airdrop Contract

Writing the base MerkleAirdrop.sol smart contract implementing merkle trees to determine if an address is able to claim. Duration: 10min

5. Already Claimed Check

Add a check to see if an address has already claimed. Duration: 3min

6. Merkle Tree Script

Write scripts to create the Merkle tree, proofs and root Duration: 17min

7. Writing The Tests

Writing the test for the claim() function! Duration: 10min

8. Deployment Script

Creating a deployment script to deploy both the token contract and the airdrop contract. Duration: 7min

9. Adding Signature Verification

Add signature verification to the airdrop contract to stop addresses receiving airdrops they do not wish when someone else is paying the gas. Duration: 3min

10. Signature Standards

Introducing and explaining the signature standards EIP-191 and EIP-712. How to add signature verification to your project. Duration: 12min

11. ECDSA Signatures

Everything you need to know to understand ECDSA signature creation, verification and how private and public keys are created. Duration: 11min

12. Transaction Types Introduction

Recap the "type 113" transactions from Remix on zkSync - what does it mean? Duration: 3min

13. Transaction Types

The different types of transactions on Ethereum and zkSync. Duration: 6min

14. Blob Transactions

What are type 3 blob transactions? What is proto-danksharding and EIP-4844? Everything you need to know! Duration: 11min

15. Understanding Type 113 Transactions

Finally, we will go through type 113 transactions on zkSync Duration: 2min

16. Implementing Signatures

Implementing signatures verification into MerkleAirdrop.sol Duration: 9min

17. Modifying The Tests

Modifying the tests to accommodate signatures. How to use Forge cheats to create signatures! Duration: 4min

18. Test On zkSync (Optional)

Running the tests on zkSync. Duration: 2min

19. Create Claiming Script

Creating Interact.s.sol to claim the airdrop on Ethereum (or Anvil). Duration: 7min

20. Creating A Signature

How to create a signature from the command line using Cast! Duration: 5min

21. Splitting A Signature

How to split a signature using a script in Foundry. Duration: 5min

22. Executing The Anvil Script

Claiming an airdrop on Anvil local node! Duration: 3min

23. Deploy And Claim On zkSync Local Node (Optional)

Deploy and claim an airdrop on a zkSync Docker local node! Duration: 6min

24. Deploy And Claim On zkSync Sepolia (Optional)

Deploy and claim an airdrop on a zkSync Sepolia! Duration: 11min

25. Summary

A summary of everything you have learned in this section! Duration: 2min

Section 5: Upgradeable Smart Contracts

Duration: 1h 23min

Section 6: Account Abstraction

Duration: 4h 28min

Section 7: DAOs

Duration: 1h 19min

Section 8: Security

Duration: 58min