Merkle Proofs

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What are Merkle trees, proofs and roots?

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 November 12, 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. Quiz: Airdrop and Signatures Intro Quiz

Questions: 6

7. Merkle Tree Script

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

8. Writing The Tests

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

9. Deployment Script

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

10. 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

11. Signature Standards

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

12. ECDSA Signatures

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

13. Transaction Types Introduction

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

14. Transaction Types

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

15. Blob Transactions

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

16. Quiz: Signature Mid Section Recap Quiz

Questions: 7

17. Understanding Type 113 Transactions

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

18. Implementing Signatures

Implementing signatures verification into MerkleAirdrop.sol Duration: 9min

19. Modifying The Tests

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

20. Test On zkSync (Optional)

Running the tests on zkSync. Duration: 2min

21. Create Claiming Script

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

22. Creating A Signature

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

23. Splitting A Signature

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

24. Executing The Anvil Script

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

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

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

26. Deploy And Claim On zkSync Sepolia (Optional)

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

27. Quiz: Airdrop and Signatures Recap Quiz