Hackathons and grant tracks, read so you do not have to. Each one shows the rule on existing code, the judging, and the vessels or fresh ideas that fit.
Prizes are the organisers' to give. Entering is about shipping in public; we never promise a win.
Sep 28 - Nov 2, 2026 per Colosseum schedule post
Fresh idea: Receipt Rail. Turn any Solana Pay checkout into a verifiable expense receipt your accountant can read.
Nov 6-8, 2026 (in person, per ETHGlobal events page and aggregators)
Fresh idea: Handover. A dead man's switch for your ENS name and wallets, signed by people you trust.
Fresh idea: Quiet Vote. Anonymous team retros where each vote is provably from a member, never from who.
Offered at select 2026 events (reported for ETHGlobal New York 2026); per-event
On-demand, ongoing
Cohorts drawn from hackathon winners
rolling
rolling, retroactive
seasonal (summer); 2027 dates unknown
Fresh idea: Float Keeper. A small business keeps a week of USDC float and sweeps the rest into a safe yield bucket.
Fresh idea: Split Tab. A group bar tab that settles in one block the moment the last friend pays.
Fresh idea: Walrus Shoebox. A family shoebox for scanned documents, stored on Walrus and shared by Move policy.
rolling
rolling
Fresh idea: Ticket Stub. Event tickets that become a keepsake stub and a loyalty pass after the show.
Fresh idea: Liquidation Coach. A plain words coach that warns a trader before Hyperliquid liquidates them, and why.
seasonal; current season unknown
rolling
rounds/seasons; current round unknown
per season
rolling
Fresh idea: Proof of Shift. Gig workers prove hours worked to a lender without showing their whole history.
Fresh idea: Refund Judge. Small sellers and buyers settle refund disputes with an AI jury that reads the evidence.
Fresh idea: Sealed Salary. Pay a team onchain without the whole internet seeing every wage.
quarterly-ish rounds; next round dates unknown
rolling calendar; specifics unknown
rolling
rolling
cohort-based; next cohort unknown
rolling cohorts
Fresh idea: Bounty Scout. Matches Solana builders to open bounties by the code they already wrote.
rolling
ETHGlobal's flagship European hackathon. 600+ builders and $125K+ in prizes from 1inch, Sui, World and more, plus a new Continuity Track that rewards ongoing software with real users.
Read the brief ↗ETHGlobal returns to Tokyo. Three days of building onchain apps and chasing sponsor bounties across the Ethereum stack, in one of web3's densest builder scenes.
Read the brief ↗ETHGlobal New York brought 500+ developers together for $225K+ in prizes with Google Cloud, World and more. A benchmark of what a top-tier onchain hackathon looks like.
Read the brief ↗