Our Quests - Begin your Blockchain Adventure - Node Guardians: Level up your programming skills

Setting Up
Agnostic
Build
Standalone
Tools
25
600
A Deep Dive into Rollups
Agnostic
Theory
In Campaign
Tech: Protocols
34
800
Acquiring the Basics
Cairo
Build
In Campaign
Data Structures & Algorithms
76
1800
Assembly Optimization
Solidity
Build
In Campaign
Low-Level Programming
42
1000
Basic Proxies
Solidity
Build
In Campaign
Advanced Design Patterns
76
1800
Bendy Signatures
Cairo
CTF
In Campaign
Security
106
2600
Beyond Simple Types
Cairo
Build
In Campaign
Data Structures & Algorithms
59
1400
Bits & Bytes
Solidity
Build
In Campaign
Low-Level Programming
88
2200
BOLD's Building Blocks
Agnostic
Theory
In Campaign
Tech: Protocols
42
1000
Brainfuck VM
Cairo
Build
Standalone
Data Structures & Algorithms
138
3400
Breaking RNG
Solidity
CTF
In Campaign
Security
42
1000
Brewing Blocks on Espresso
Agnostic
Theory
Standalone
Tech: Protocols
17
400
Building Diamonds
Solidity
Build
In Campaign
Advanced Design Patterns
138
3400
Building ERC-20
Solidity
Build
In Campaign
Design Patterns
76
1800
Building ERC-721
Solidity
Build
In Campaign
Design Patterns
76
1800
Bypassing extcodesize()
Solidity
CTF
Standalone
Advanced Security
59
1400
Calldata Manipulation
Solidity
Build
In Campaign
Low-Level Programming
138
3400
Calldata Spoofing
Cairo
CTF
Standalone
Low-Level Programming
42
1000
Celestia Blobstream
Solidity
CTF
Standalone
Tools
88
2200
Chainlink VRF
Solidity
CTF
In Campaign
Tools
59
1400
Changing Base
Solidity
Gas Golfing
In Campaign
Data Structures & Algorithms
59
1400
Clone Factories
Solidity
Build
Standalone
Advanced Design Patterns
59
1400
Conquering Ownership
Cairo
Build
In Campaign
Data Structures & Algorithms
42
1000
Consensus Layer: RANDAO
Agnostic
Theory
In Campaign
Tech: Primitives
17
400
Cream Finance Rekt
Solidity
CTF
In Campaign
Security
138
3400
Create an OP Rollup
Solidity
CTF
In Campaign
Tools
76
1800
Cross Layer Secrets
Solidity
CTF
In Campaign
Tools
42
1000
Daggers and Decoys
Noir
Build
In Campaign
Data Structures & Algorithms
138
3400
Decoding Arrays
Huff
Build
In Campaign
Low-Level Programming
138
3400
Defining Structs
Cairo
Build
In Campaign
Data Structures & Algorithms
42
1000
Delegate Call Detection
Solidity
Build
Standalone
Low-Level Programming
25
600
Elliptic Curve Cryptography
Agnostic
Theory
In Campaign
Tech: Primitives
17
400
Emergency Governance Attack
Solidity
CTF
Standalone
Security
106
2600
Enums and Matching
Cairo
Build
In Campaign
Data Structures & Algorithms
42
1000
Execution Layer - VRF
Agnostic
Theory
In Campaign
Tech: Primitives
17
400
Finding a Home for Your DApp in a Scalable World
Agnostic
Theory
Standalone
Ecosystems
25
600
Finding Ouroboros
Solidity
CTF
Standalone
Low-Level Programming
138
3400
Flash Loan Counter-Exploit
Solidity
CTF
Standalone
Security
124
3000
Hardhat Forking
Solidity
Build
Standalone
Tools
59
1400
Hello Noir
Noir
Build
In Campaign
Data Structures & Algorithms
42
1000
Huff Fundamentals
Huff
Build
In Campaign
Low-Level Programming
124
3000
Implementing Elliptic Curves
Solidity
Build
Standalone
Data Structures & Algorithms
106
2600
Interactive Fraud Proofs
Solidity
CTF
Standalone
Design Patterns
76
1800
Internal Representation
Solidity
Gas Golfing
In Campaign
Data Structures & Algorithms
59
1400
Introduction to Elliptic Curves
Agnostic
Theory
In Campaign
Tech: Primitives
25
600
Introduction to OP Stack
Agnostic
Theory
In Campaign
Ecosystems
17
400
Introduction to Randomness
Agnostic
Theory
In Campaign
Tech: Primitives
25
600
Lido's Dual Governance
Agnostic
Theory
Standalone
Tech: Protocols
17
400
Low-Level Calls
Solidity
CTF
Standalone
Low-Level Programming
42
1000
Memory Manipulation
Solidity
Build
In Campaign
Low-Level Programming
138
3400
Merkle Proofs
Solidity
Build
Standalone
Data Structures & Algorithms
76
1800
Multicall
Solidity
Build
Standalone
Design Patterns
59
1400
Openzeppelin Upgrades
Solidity
Build
In Campaign
Tools
42
1000
Optimized Dispatchers
Huff
Build
In Campaign
Low-Level Programming
166
4200
Orderless Hashing
Cairo
CTF
In Campaign
Security
138
3400
Poly Network Rekt
Solidity
CTF
In Campaign
Security
138
3400
Price Oracle Attack
Solidity
CTF
Standalone
Security
138
3400
Projective Coordinates in Elliptic Curves
Agnostic
Theory
In Campaign
Tech: Primitives
17
400
Proxy Security
Solidity
CTF
In Campaign
Advanced Security
59
1400
Puzzling Pyramids
Cairo
Build
In Campaign
Data Structures & Algorithms
88
2200
Quadratic Public Goods
Solidity
Build
Standalone
Data Structures & Algorithms
76
1800
Racing Riverboats
Cairo
Build
In Campaign
Data Structures & Algorithms
76
1800
Remove Duplicates
Solidity
Gas Golfing
In Campaign
Data Structures & Algorithms
25
600
Roman Numerals
Solidity
Gas Golfing
In Campaign
Data Structures & Algorithms
42
1000
Scaling and Bridging with Sidechains
Agnostic
Theory
In Campaign
Tech: Protocols
25
600
Scaling Blockchains
Agnostic
Theory
In Campaign
Tech: Protocols
25
600
Self-Hosted EVM
Solidity
Build
Standalone
Low-Level Programming
316
8200
Smart Contract Development in a Scalable World
Agnostic
Theory
Standalone
Ecosystems
25
600
Solidity Optimization
Solidity
Build
In Campaign
Data Structures & Algorithms
25
600
Sparring Sorcerers
Cairo
Build
In Campaign
Data Structures & Algorithms
76
1800
Starknet Storage Layout
Cairo
CTF
Standalone
Low-Level Programming
42
1000
State Channels
Solidity
Build
Standalone
Design Patterns
88
2200
Stateful Libraries
Solidity
Build
In Campaign
Advanced Design Patterns
42
1000
Static Call Detection
Solidity
CTF
Standalone
Low-Level Programming
25
600
Stealing Souls
Cairo
CTF
In Campaign
Security
88
2200
Stealth Addresses
Solidity
Build
Standalone
Design Patterns
138
3400
Storage Efficiency
Solidity
Build
In Campaign
Low-Level Programming
42
1000
Storage Layout
Solidity
CTF
In Campaign
Low-Level Programming
42
1000
The BOLD Protocol
Agnostic
Theory
In Campaign
Tech: Protocols
42
1000
The Final Duel
Huff
Build
In Campaign
Low-Level Programming
166
4200
The Lower Floor
Cairo
CTF
In Campaign
Security
76
1800
The Middle Floor
Cairo
CTF
In Campaign
Security
76
1800
The Upper Floor
Cairo
CTF
In Campaign
Security
76
1800
Towards L2s with Payment Channels
Agnostic
Theory
In Campaign
Tech: Primitives
25
600
Unexpected Ether
Solidity
Build
Standalone
Advanced Security
59
1400
Unordered Key Set
Solidity
Build
Standalone
Data Structures & Algorithms
76
1800
Unsafe Math
Cairo
CTF
Standalone
Security
25
600
Using Diamonds
Solidity
CTF
In Campaign
Advanced Design Patterns
106
2600
Using Signatures
Solidity
Build
Standalone
Design Patterns
106
2600
Vanity Addresses
Cairo
CTF
Standalone
Low-Level Programming
76
1800
Vanity Theft
Solidity
CTF
Standalone
Security
88
2200
Wintermute Rekt
Solidity
CTF
In Campaign
Security
166
4200
Writing Gas Optimized Contracts
Solidity
Theory
In Campaign
Data Structures & Algorithms
17
400
WTF Imps
Solidity
Build
Standalone
Low-Level Programming
25
600
Yul Basics
Solidity
Build
In Campaign
Low-Level Programming
88
2200
Zero-Knowledge Dungeon
Noir
Build
In Campaign
Data Structures & Algorithms
106
2600
zkSync Accounts
Solidity
Build
In Campaign
Tools
76
1800
zkSync Contracts
Solidity
Build
In Campaign
Tools
34
800
zkSync Paymasters
Solidity
Build
In Campaign
Tools
76
1800

Setting Up

A Deep Dive into Rollups

Acquiring the Basics

Assembly Optimization

Basic Proxies

Bendy Signatures

Beyond Simple Types

Bits & Bytes

BOLD's Building Blocks

Brainfuck VM

Breaking RNG

Brewing Blocks on Espresso

Building Diamonds

Building ERC-20

Building ERC-721

Bypassing extcodesize()

Calldata Manipulation

Calldata Spoofing

Celestia Blobstream

Chainlink VRF

Changing Base

Clone Factories

Conquering Ownership

Consensus Layer: RANDAO

Cream Finance Rekt

Create an OP Rollup

Cross Layer Secrets

Daggers and Decoys

Decoding Arrays

Defining Structs

Delegate Call Detection

Elliptic Curve Cryptography

Emergency Governance Attack

Enums and Matching

Execution Layer - VRF

Finding a Home for Your DApp in a Scalable World

Finding Ouroboros

Flash Loan Counter-Exploit

Hardhat Forking

Hello Noir

Huff Fundamentals

Implementing Elliptic Curves

Interactive Fraud Proofs

Internal Representation

Introduction to Elliptic Curves

Introduction to OP Stack

Introduction to Randomness

Lido's Dual Governance

Low-Level Calls

Memory Manipulation

Merkle Proofs

Multicall

Openzeppelin Upgrades

Optimized Dispatchers

Orderless Hashing

Poly Network Rekt

Price Oracle Attack

Projective Coordinates in Elliptic Curves

Proxy Security

Puzzling Pyramids

Quadratic Public Goods

Racing Riverboats

Remove Duplicates

Roman Numerals

Scaling and Bridging with Sidechains

Scaling Blockchains

Self-Hosted EVM

Smart Contract Development in a Scalable World

Solidity Optimization

Sparring Sorcerers

Starknet Storage Layout

State Channels

Stateful Libraries

Static Call Detection

Stealing Souls

Stealth Addresses

Storage Efficiency

Storage Layout

The BOLD Protocol

The Final Duel