Spend a week hacking with the Major League Hacking (MLH) community at GHW: Web3!

What is Global Hack Week?

Global Hack Week takes place throughout the year to give you a chance to complete technical challenges, network with the community, enjoy fun live sessions, build technical projects, and make new memories.

We'll have challenges, live technical sessions with MLHers, mini-events galore, and some cool content from our partners! Here’s a sneak peek:

At each Global Hack Week, you can:

⭐ Watch live technical streams

⭐ Participate in skill-building workshops

⭐ Join us for fun activities

⭐ Enter and win swag in raffles


What is Web3 Week?

Each GHW features a new theme, and this September we'll offer workshops, technical sessions, and more focused on Web3!

Who is GHW for?

Global Hack Week is for anyone ready to level-up their hacking skills. We welcome all programmers, designers, artists, and hackers from around the globe to join us for these events. Whether this is is day 1 or day 1000 of your hacker journey, we want you to join us!

Can I get swag at this event?

Yes, of course! Each Global Hack Week will feature some amazing 2023 Hackathon Season swag…you’ll have to participate to find out exactly what you’re getting! 

Who organized Global Hack Week?

Global Hack Week is organized by Major League Hacking (MLH). It is our mission to empower hackers worldwide by providing them with the tools, resources, and opportunities they need to succeed. 


Your challenge submission must be completed within the submission period.

When relevent, your code must be available in some sort of public repository. 

If you're continuing work on an old project, you MUST specify in your Devpost what was worked on 1) Before this day of Global Hack Week and 2) During this day of Global Hack Week.  

Hackathon Sponsors


Set up a Circle Programmable Wallet

Sign up for a Circle Web3 Services Console account and follow along with the programmable wallet tutorial! Submit your project to hackp.ac/DailyDevpost.

Voting System

Develop a secure voting system on the blockchain that allows users to cast votes. Submit your app to us at hackp.ac/DailyDevpost.

Non-Fungible Token (NFT) Creation

Create your own NFT using a platform like OpenSea or Rarible. Design unique artwork or virtual items and mint them as NFTs. Explore the possibilities of NFT ownership and token metadata.

Web3 Gaming

Develop a blockchain-based game that incorporates NFTs, decentralized ownership, or in-game economies using smart contracts. Submit your app on hackp.ac/DailyDevpost.

Blockchain Transaction Simulation

Challenge participants to create a simplified simulation of blockchain transactions. Participants should design a program that mimics the process of creating transactions, adding them to blocks, and validating them using basic consensus mechanisms like proof-of-work or proof-of-stake.

Web3 Marketplace

Create a website that allows users to buy and sell goods using cryptocurrency.

Get Started with the Hedera Blockchain

Transferring digital assets is incredibly easy with Hedera. Get started by building your first Hedera DAPP using our step by step guide! You'll learn how to set up a testnet account, how to programmatically generate accounts, and transfer funds into those accounts using the Hedera Blockchain. Make sure you submit your project to hackp.ac/dailydevpost!

Set up your Domain Name

Set up a website with a custom GoDaddy Registry domain name! Submit your website here.

Use a Web3 API

Hack with any Web3 API of your choosing. Share your project on hackp.ac/DailyDevpost

[Submissions Closed - Day 4 Challenge] Token Wallet tracker

Build a wallet that let's folks manage and track their cryptocurreincies across different blockchains. Share on hackp.ac/DailyDevpost

[Submissions Closed - Day 4 Challenge] Decentralized Storage Integration

Integrate a decentralized storage protocol like IPFS (InterPlanetary File System) or Filecoin into your application. Allow users to upload files, retrieve stored data, and showcase the benefits of decentralized storage. Share your project on hackp.ac/DailyDevpost

[Submissions Closed - Day 3 Challenge] Build a DAPP using Flow

You can get set up with a Flow account and build your first Flow DAPP in as little as fifteen minutes. Follow along with our step by step getting started guide to complete this challenge! Be sure to submit your project to hackp.ac/DailyDevpost.

[Submissions Closed - Day 2 Challenge] Build an Ethereum App

Build a Dapp on the Ethereum blockchain and submit it on Devpost!

[Submissions Closed - Day 2 Challenge] Web3j Java Library Hack

Web3j is a Java and Android library for working on the Ethereum network. Utalize it to build an app and submit on Devpost.

[Submissions Closed - Day 2 Challenge] Wallet Integration

Integrating a Web3 wallet, such as MetaMask, into a basic web application. Explore adding features like allowing users to connect their wallets, retrieve account information, and interact with a simple smart contract. Submit screenshots or relevant links on Devpost!

[Submissions Closed - Day 1 Challenge] Decentralized Charity Donation

Create a platform where users can track their donations and see how funds are used.

[Submissions Closed - Day 1 Challenge] Create a Smart Contract

Design and deploy a simple smart contract on a blockchain platform of your choice. Implement basic functionality like transferring tokens or managing ownership. Submit on Devpost!

Devpost Achievements

Submitting to this hackathon could earn you:


Major League Hacking

Major League Hacking

Judging Criteria

  • None
    GHW exists to give you a chance to learn, build, and share in a non-competitive environment.

Questions? Email the hackathon manager

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