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BasePaint Hackathon - Aug 1–8 2026 · submit Aug 8, 23:59 UTC - 2 ETH worth (paid as BasePaint canvas subscriptions per details) - remote - Open-source vibe apps on BasePaint/Base; strong remote crypto fit for solo IST - basepaint.xyz/hack · basepaint.xyz/hack/details · x.com/basepaint_xyz/status/2080669785927590234
Arm Create: AI Optimization Challenge - open now · submit Aug 14, 2026 4:00pm PDT - $8,000 cash - online - Physical/Cloud/Mobile AI optimization on Arm; real cash, remote-friendly, modest pool vs agent/crypto focus - arm-ai-optimization-challenge.devpost.com/
Cantor8 Canton Network London Hackathon - Aug 29, 2026 (one-day) - prizes mentioned, amount TBA - in-person London - Daml/institutional Canton with Oxbridge/Imperial; poor fit for India remote - luma.com/sjkped24 · x.com/cantor8/status/2080610427088543811
Re-verify (tracked deadlines — no changes)
| Name | Tracked | Organizer source | Status |
|---|---|---|---|
| Agents of SigNoz | 2026-07-26 | wemakedevs.org/hackathons/signoz (Jul 20–26) | unchanged |
| Casper Agentic Finals | 2026-07-26 | dorahacks.io/hackathon/casper-agentic-buildathon-finals/deta (deadline 2026/07/26 23:59) | unchanged |
| OKX.AI Genesis | 2026-07-27 | web3.okx.com/xlayer/build-x-series (+ x.com/XLayerOfficial/status/2080659039306805723) | unchanged |
| Grokathon SpaceXAI | 2026-07-28 (apps) | x.ai/grokathon | unchanged (SF IRL Aug 8) |
| Archestra Apps | 2026-07-29 | archestra.ai/apps-hackathon | unchanged |
| C:>DIR Agentic Regulator | 2026-07-31 (concept notes) | cdir.global/cdir-hackathon | unchanged |
| WTF!! iExec summer | 2026-08-01 | dorahacks.io/hackathon/wtf-hackathon | unchanged |
| Agentic Commerce (Prava×OpenAI) | 2026-08-02 (event end) | agentic-commerce.devfolio.co/ (Jul 31–Aug 2; apps close earlier ~Jul 27) | structure unchanged |
| HackerRank Orchestrate Aug | 2026-08-02 | hackerrank.com/hackerrank-orchestrate-august26 (starts Aug 1 6PM IST, 24h) | unchanged |
| KSP Datathon 2026 | 2026-07-26 (X) | hack2skill.com/event/datathon2026 shows registration closed Jul 19 | not a verified new submission date; skip JSON |
Listings sweep notes
- Encode Arc Programmable Money: still live; final submit Sun 9 Aug AoE, reg closes Sat 8 Aug, Demo Day 20 Aug — encodeclub.com/programmes/arc-hackathon (known)
- DoraHacks: Casper/WEEX/Flare/KeeperHub/Creative Minds/BLI/iExec already known; Mantle Turing Test submission ended; Evorozen Apex = API credits only
- Akindo wave-hacks: SPA empty — no new buildathon cards
- ETHGlobal: Lisbon live Jul 24–26; ETHOnline / Tokyo / Mumbai known — ethglobal.com/events
- Devpost: main listing JS-thin; featured still DataHub / Gemini XPRIZE / Arm / YouCam (known except Arm)
- Major labs 24h: no new OpenAI/Anthropic/Google/xAI challenge; OpenAI Build Week already closed (Jul 21) — openai.com/build-week/