Blockchain & Web3 Hackathons
Explore 50 blockchain & web3 hackathons. Hackathons exploring blockchain technology, smart contracts, DeFi, DAOs, and decentralized applications.
Hackathons
50
Avg Prize
$16K
Organizers
41
Sunday, July 5, 2026
Ongoing
DemoHack 2025
Online
Feb 13, 2025 – Feb 13, 2027James Demo OrgOnline$1K
Blockchain
Artificial Intelligence
Innovation
Ongoing
CodeZukunft Web3 Frontier Challenge 2
Online
Apr 11, 2025 – Jul 17, 2026DoraHacks Tech TeamOnline$1K
Blockchain
Artificial Intelligence
Innovation
Ongoing
Crypto's Got Talent Season 2
Online
Sep 4, 2025 – Aug 30, 2026IoTeXOnline$100
Artificial Intelligence
Blockchain
Data Science
Ongoing
Common S3nse
Online
Dec 10, 2025 – Sep 12, 2026CryptoCanalOnline
Blockchain
Cybersecurity
Data Science
Ongoing
48 Weeks. 48 Blockchains.
Online
Feb 1 – Dec 31, 2026CODEQUITYOnline$10K
Blockchain
Social Impact
Cybersecurity
Ongoing
MDBA Youth Blockchain Hackathon
Online
Feb 27 – Nov 1, 2026Blockchain Legal InstituteOnline$50K
Blockchain
Artificial Intelligence
Social Impact
Ongoing
AlgoBharat Regional Hackathons
Online
Mar 19 – Dec 31, 2026AlgorandOnline
Blockchain
Edtech
Social Impact
Ongoing
参赛报名入口：HTX genesis hackathon
In Person
Apr 21 – Jul 31, 2026OpenCityCentral, Hong Kong
Artificial Intelligence
Blockchain
IoT
Ongoing
CODEFUSION 2k26
In Person
Apr 24 – Aug 22, 2026Echelon Institute Of Technology FaridabadFaridabad, India
Artificial Intelligence
Blockchain
Cloud Computing
Ongoing
BLI Legal Tech Hackathon 2
Online
May 15 – Nov 1, 2026Blockchain Legal InstituteOnline$50K
Blockchain
Fintech
Artificial Intelligence
Ongoing
Casper Agentic Buildathon 2026 - Qualification Round
Online
Jun 1 – Jul 7, 2026Casper NetworkOnline$150K
Artificial Intelligence
Blockchain
Web Development
Ongoing
The Black-Box Protocol: Stage 01 - "System Escalation"
In Person
Jun 5 – Jul 25, 2026Samrat Ashok Technological Institute (SATI), VidishaGwalior, India$2K
Artificial Intelligence
Blockchain
Cloud Computing
Ongoing
Founders Fest: What The Tech!
In Person
Jun 8 – Jul 8, 2026Founders' FestGachibowli, India$2K
Artificial Intelligence
Blockchain
Ongoing
CROO Agent Hackathon
Online
Jun 9 – Jul 12, 2026CROO NetworkOnline$10K
Artificial Intelligence
Blockchain
Open Source
Ongoing
Brainwave
Online
Jun 12 – Aug 9, 2026ACT HouseOnline$1K
Data Science
Web Development
Blockchain
Ongoing
0G Bridge by AKINDO
Online
Jun 13 – Jul 7, 20260GOnline$100
Artificial Intelligence
Blockchain
Data Science
Ongoing
Build on Canton Hackathon
Online
Jun 14 – Jul 29, 2026Encode ClubOnline
Fintech
Blockchain
Web Development
Ongoing
HSK Chain Horizon Hackathon · Japan
Online
Jun 18 – Jul 11, 2026HashKey ChainOnline$12K
Blockchain
Artificial Intelligence
Fintech
Ongoing
DropHack
In Person
Jun 20 – Aug 29, 2026SIEC CommunityGurugram, India$600
Social Impact
Artificial Intelligence
Blockchain
Ongoing
Hackathon Ethereum Uruguay 2026
Online
Jun 22 – Jul 25, 2026Ethereum UruguayOnline$2K
Blockchain
Ongoing
Circle Nanopayments Private Bounty Program
Online
Jun 22 – Jul 8, 2026CircleOnline$10K
Blockchain
Fintech
Innovation
Ongoing
UXmaxx Hackathon
Online
Jun 22 – Aug 2, 2026Encode ClubOnline
Blockchain
Artificial Intelligence
Ongoing
Prediction Markets and Settlement
Online
Jun 24 – Jul 19, 2026TxODDSOnline$18K
Data Science
Blockchain
Ongoing
Flare Summer Signal
Online
Jun 28 – Aug 14, 2026FlareOnline$12K
Blockchain
Artificial Intelligence
Social Impact
Ongoing
Blockchain Devfest Hackathon 2026
In Person
Jun 29 – Jul 5, 2026Blockchain DevFestTBA
Blockchain
Artificial Intelligence
Social Impact
Ongoing
Inceptia Hackathon
In Person
Jun 30 – Aug 8, 2026Pimpri Chinchwad College Of Engineering & Research (PCCOE &R), Pimpri-Chinchwad, PunePune, India$600
Artificial Intelligence
Edtech
Blockchain
Ongoing
KeeperHub - Agents Onchain Hackathon
Online
Jul 2 – Aug 13, 2026KeeperHubOnline$5K
Artificial Intelligence
Blockchain
Open Source
Ongoing
Rise of the Builder: The Xero App & Agent Hackathon
In Person
Jul 4 – Jul 5, 2026Encode ClubTBA
Artificial Intelligence
Blockchain
Past hackathons
Recently ended — many run again.
Wednesday, July 1, 2026
Sunday, June 28, 2026
Sunday, June 21, 2026
Saturday, June 20, 2026
Friday, June 19, 2026
Past
Global South Hackathon Apart x AI Safety México
In Person
Jun 19 – Jun 22, 2026AI SAFETY MÉXICOMérida, Mexico$3K
Artificial Intelligence
Blockchain
Fintech
Past
Global South AI Safety Hackathon: Joburg
In Person
Jun 19 – Jun 21, 2026Shannon WadayaJohannesburg, South Africa
Artificial Intelligence
Blockchain
Fintech
Past
Global South AI Safety Hackathon: Cape Town
In Person
Jun 19 – Jun 21, 2026Tegan GreenCape Town, South Africa
Artificial Intelligence
Blockchain
Fintech
Past
AI for Good Hackathon
In Person
Jun 19 – Jun 21, 2026AMS Tech WeekAmsterdam, Netherlands$11K
Artificial Intelligence
Fintech
Blockchain
Past
Encode Vibe Coding Hackathon
In Person
Jun 19 – Jun 21, 2026Encode ClubShoreditch, United Kingdom$500
Artificial Intelligence
Blockchain
Past
Global South AI Safety Hackathon: Da Nang
In Person
Jun 19 – Jun 21, 2026AnToàn.AI (AI Safety Vietnam)Ngũ Hành Sơn, Vietnam
Artificial Intelligence
Social Impact
Blockchain
Past
Global South AI Safety Hackathon | Bengaluru
In Person
Jun 19 – Jun 21, 2026Electric SheepBengaluru, India$100
Artificial Intelligence
Blockchain
Fintech