Online Web3 Hackathons
Participate from anywhere in the world. Browse online Web3 and blockchain hackathons, compete for prizes, and build innovative projects.
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Scaffold Stellar Hackathon
Stellar Development Foundation
otherrusttypescript
Prize Pool$10.0K
Days LeftEnded
LocationOnline
Date RangeOct 27, 2025 - Nov 10, 2025
End DateNov 10, 2025
Calling For All Agents! Hackathon
Verisense Network
otherremotehybrid
Prize Pool$50.0K
Days LeftEnded
LocationOnline
Date RangeOct 27, 2025 - Dec 2, 2025
Submission DeadlineNov 28, 2023
The Open Hack
The Open Network
othertonremote
Prize Pool$5.0K
Days LeftEnded
LocationOnline
Date RangeOct 28, 2025 - Nov 23, 2025
Submission DeadlineNov 23, 2025
Somnia Data Streams Mini Hackathon
Somnia Network
otherethereumsolidity
Prize Pool$3.0K
Days LeftEnded
LocationOnline
Date RangeNov 4, 2025 - Nov 29, 2025
Submission DeadlineNov 15, 2025
anitya creators hackathon #1 - simple, fast, win big
anitya.space
othersolananft
Prize Pool$1.5K
Days Left234 days
LocationOnline
Date RangeOct 18, 2025 - Nov 27, 2025
Submission DeadlineDec 17, 2026
Casper Hackathon 2026 - Qualification Round
Casper Network
otherrustjavascript
Prize Pool$25.0K
Days LeftEnded
LocationOnline
Date RangeNov 14, 2025 - Jan 11, 2026
Submission DeadlineJan 25, 2026
DeSci Tools Buildathon
Unbound Science
otherethereummonad
Prize PoolNon-cash Prize
Days LeftEnded
LocationOnline
Date RangeNov 17, 2025 - Nov 22, 2025
Submission DeadlineNov 22, 2024
GenLayer Nov 2025 Hackathon
GenLayer
otherethereumbase
Prize Pool$500
Days LeftEnded
LocationOnline
Date RangeNov 8, 2025 - Nov 11, 2025
End DateNov 11, 2025
Pokéthon: The First Pokémon Hackathon for AI Agents
Creatorbid
otherbaseai agents
Prize Pool$20.0K
Days LeftEnded
LocationOnline
Date RangeNov 10, 2025 - Dec 1, 2025
End DateDec 1, 2025
Road to Haulout : Walrus Buildathon
First Movers
otherethereummove
Prize Pool$800
Days LeftEnded
LocationOnline
Date RangeNov 7, 2025 - Nov 9, 2025
End DateNov 9, 2025
Hack4Privacy by iExec x 50Partners
iExec
otherarbitrumaccount abstraction
Prize Pool$6.0K
Days LeftEnded
LocationOnline
Date RangeDec 8, 2025 - Feb 7, 2026
End DateFeb 7, 2026
Agent Arena - University Hackathon
IQ AI
othertypescriptremote
Prize Pool$7.0K
Days LeftEnded
LocationOnline
Date RangeNov 8, 2025 - Dec 9, 2025
Submission DeadlineDec 9, 2025
Reactive Bounties 2.0
Reactive Network
otherethereumarbitrum
Prize PoolREA6.0K
Days LeftEnded
LocationOnline
Date RangeNov 16, 2025 - Jan 5, 2026
End DateJan 5, 2026
Cedra Builders Forge
Cedra
othermoveremote
Prize Pool$1.5K
Days LeftEnded
LocationOnline
Date RangeNov 3, 2025 - Dec 29, 2025
End DateDec 29, 2025
Cronos x402 Paytech Hackathon
Cronos
otherethereumcosmos
Prize Pool$42.0K
Days LeftEnded
LocationOnline
Date RangeNov 27, 2025 - Jan 23, 2026
Submission DeadlineJan 23, 2026
Camp Network Africa Buildathon
Camp Network
otherai agents
Prize PoolNon-cash Prize
Days LeftEnded
LocationOnline
Date RangeNov 10, 2025 - Dec 3, 2025
End DateDec 3, 2025
Verified Wallet Bug Bounty
Verified Network
otherbasetypescript
Prize Pool$5.0K
Days LeftEnded
LocationOnline
Date RangeDec 12, 2025 - Jan 14, 2026
Submission DeadlineDec 30, 2025
Kaspathon : Build at Internet Speed
Kaspa Community
otherpaymentsgaming
Prize PoolKAS10.0K
Days LeftEnded
LocationOnline
Date RangeDec 20, 2025 - Feb 16, 2026
Submission DeadlineFeb 15, 2026
San Francisco Agentic Commerce x402 Hackathon
SKALE
otherbasehybrid
Prize Pool$50.0K
Days LeftEnded
LocationOnline
Date RangeJan 29, 2026 - Feb 16, 2026
Submission DeadlineFeb 13, 2024
StableHacks: Building Institutional Stablecoin Infrastructure on Solana.
Tenity
othersolanaremote
Prize Pool$100.0K
Days LeftEnded
LocationOnline
Date RangeJan 26, 2026 - Mar 22, 2026
Submission DeadlineMar 22, 2026