Online Web3 Hackathons
Participate from anywhere in the world. Browse online Web3 and blockchain hackathons, compete for prizes, and build innovative projects.
View all with full filters ā
Status: EndedStacks Builders Competition: Embedded Wallet + sBTC on Turnkey
Oct 6, 2025 - Oct 14, 2025
Prize Pool
STX2.0K
Status: EndedICP - WCHL25 - Global Finale
Oct 1, 2025 - Oct 20, 2025
Prize Pool
$300.0K
Status: EndedSeedify Prediction Markets Hackathon
Oct 21, 2025 - Nov 18, 2025
Prize Pool
$400.0K
Status: EndedCortensor Hackathon #3
Nov 22, 2025 - Dec 28, 2025
Prize Pool
$3.0K
Status: EndedDCL Regenesis Labs Vibe Coding Hackathon
Oct 10, 2025 - Oct 29, 2025
Prize Pool
$7.5K
Status: EndedLatina Blockchain Startup Program 2025
Oct 7, 2025 - Oct 10, 2025
Prize Pool
$2.0K
Status: EndedETHSafari Hackathon 2025
Oct 14, 2025 - Nov 14, 2025
Prize Pool
$4.0K
Status: Endedš CodeNut Global Vibe: AI Web3 Hackathon 2025 š
Oct 14, 2025 - Dec 31, 2025
Prize Pool
$1.0K
Status: EndedOneHack 2.0 | Gamefi Edition
Oct 7, 2025 - Nov 27, 2025
Prize Pool
$14.0K
Status: EndedRoad to Buenos Aires
Oct 14, 2025 - Oct 29, 2025
Prize Pool
$15.0K
Status: EndedHalloween ChaincKathon 2025
Oct 25, 2025 - Oct 27, 2025
Prize Pool
$150
Status: EndedScaffold Stellar Hackathon
Oct 27, 2025 - Nov 10, 2025
Prize Pool
$10.0K
Status: EndedCalling For All Agents! Hackathon
Oct 27, 2025 - Dec 2, 2025
Prize Pool
$50.0K
Status: EndedThe Open Hack
Oct 28, 2025 - Nov 23, 2025
Prize Pool
$5.0K
Status: EndedSomnia Data Streams Mini Hackathon
Nov 4, 2025 - Nov 29, 2025
Prize Pool
$3.0K
Status: Endedanitya creators hackathon #1 - simple, fast, win big
Oct 18, 2025 - Nov 27, 2025
Prize Pool
$1.5K
Status: EndedCasper Hackathon 2026 - Qualification Round
Nov 14, 2025 - Jan 11, 2026
Prize Pool
$25.0K
Status: EndedDeSci Tools Buildathon
Nov 17, 2025 - Nov 22, 2025
Prize Pool
Non-cash Prize
Status: EndedGenLayer Nov 2025 Hackathon
Nov 8, 2025 - Nov 11, 2025
Prize Pool
$500
Status: EndedPokƩthon: The First PokƩmon Hackathon for AI Agents
Nov 10, 2025 - Dec 1, 2025
Prize Pool
$20.0K