Zealynx AcademyZealynx Academy
Easy
engineering

Building Compound V2

Build the most forked lending protocol in DeFi from scratch. Supply assets, earn interest, borrow against collateral, and liquidate unhealthy positions. Every function, every invariant. Modernized to Solidity 0.8.x.

18 sections
Lynx385 Lynx
~360 min
Start Module

Part 1: Core Lending

7 sections
1
Introduction to Lending Protocols
Lynx5
2
Fixed-Point Math Library
Lynx10
3
Interest Rate Model
Lynx15
4
CToken: Storage and State
Lynx10
5
CToken: Exchange Rate and Interest Accrual
Lynx15
6
CToken: Supply (mint)
Lynx15
7
CToken: Withdraw (redeem)
Lynx15

Part 2: Risk Engine

7 sections
8
Price Oracle
Lynx10
9
Comptroller: Market Management
Lynx15
10
Comptroller: Liquidity Calculation
Lynx20
11
Comptroller: Policy Hooks
Lynx15
12
CToken: Borrow
Lynx20
13
CToken: Repay
Lynx15
14
Core Lending Complete
Lynx50

Part 3: Liquidation & Integration

4 sections
15
Liquidation: Comptroller Side
Lynx20
16
Liquidation: CToken Side
Lynx20
17
CErc20: Token Integration
Lynx15
18
Complete Lending Protocol
Lynx100