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CodeWorlds

Crypt

Welcome to the Crypt - an underground blockchain city! Build decentralized applications, create your own tokens and NFTs.

BlockchainEthereumSolidityethers.jswagmiSmart ContractsDeFiNFT
12 modules
450+ exercises
100-120 hours
Crypt
Your guide
Atlas
Cartographer of the Deep

What you'll learn

Blockchain and cryptography fundamentals
Ethereum and EVM
Solidity - smart contracts programming
ethers.js and viem for Web3
ERC-20 tokens and ERC-721 NFTs
DeFi protocols and DEX
wagmi and RainbowKit
Security and audits

Main projects

During the course you will build real projects that you can add to your portfolio

CryptoVault Token

Your own ERC-20 token with minting and staking

SolidityHardhatOpenZeppelin

Crypt NFT Gallery

NFT marketplace with minting and trading

SolidityIPFSwagmi

DeFi Crypt

Simple DEX with liquidity pools

Solidityethers.jsNext.js

Course program

12 modules full of interactive exercises and practical projects

1

Gates of the Crypt

Blockchain Fundamentals

History, decentralization, consensus

35 exercises

2

Cipher Chamber

Cryptography

Hash, keys, digital signatures, wallets

38 exercises

3

Underground Railway

Ethereum & EVM

EVM, gas, transactions, testnets

40 exercises

4

Ethers Library

ethers.js & viem

Providers, Signers, Contracts

42 exercises

5

Treasury

Wallets & Transactions

MetaMask, WalletConnect, transactions

35 exercises

6

Hall of Mechanisms

Solidity Basics

Types, functions, modifiers, events

45 exercises

7

Communication Hub

Contract Interaction

ABI, read/write, Hardhat deployment

38 exercises

8

Mint

ERC-20 & Token Creation

ERC-20 Standard, OpenZeppelin

40 exercises

9

Gallery

NFT & ERC-721/1155

NFT minting, IPFS, marketplace

42 exercises

10

Underground Market

DeFi & Staking

DEX, AMM, liquidity pools, staking

45 exercises

11

Heart of the City

dApp Development

Next.js + wagmi + RainbowKit

40 exercises

12

Guard Tower

Security & Audit

Reentrancy, Slither, audit, mainnet

38 exercises

Course theme

Underground Blockchain City

Each module is set in a unique theme that makes learning an adventure.

Your guide

Atlas

Cartographer of the Deep

Will guide you through all challenges and help you gain new skills.

Change your future

Start learning Blockchain today

Join CodeWorlds and discover modern learning methods that make programming fascinating and accessible to everyone.