Colosseum's Crypto World's Fair Hackathon Opens to Builders on Every Chain

Colosseum has opened registration for the Crypto World's Fair Hackathon, an online hackathon running September 14 to October 12, 2026 that is open to builders across every blockchain ecosystem rather than Solana alone. It is the first Colosseum hackathon not limited to teams building only on Solana. Every submission is eligible for prizes regardless of which chain it is built on.

Founders on any chain can enter and win. Ethereum, Base, Arbitrum, Hyperliquid, Zcash, Tempo, and Robinhood Chain builders are all in scope alongside Solana teams, who now compete against the whole field. The Colosseum Accelerator and fund behind the hackathon will still invest only in Solana teams.

Registration is open now. Colosseum runs two hackathons a year, one from April to May and one from September to October, so the next window after this one is spring 2027.

The hackathon opens up, the accelerator does not

Colosseum has split its funnel. The hackathon is now chain-agnostic, and the money behind it is not. Colosseum states plainly that its hackathons "are open to builders across all blockchain ecosystems, and every submission is eligible for prizes regardless of the crypto infrastructure used." The accelerator and the $60 million Colosseum Fund I stay pointed at Solana.

"Colosseum's accelerator and venture fund will continue focusing on investing in Solana founders. We firmly believe Solana is one of the strongest startup ecosystems in tech. It has a deep builder community, many compelling use cases, and one of the best environments for ambitious founders to build breakout crypto companies."

Matty Tay, co-founder, Colosseum

So an Ethereum team can enter the Crypto World's Fair Hackathon, win a track, and take the prize money and the recognition. What it cannot take is the $250,000 pre-seed check and the accelerator seat, which go to selected winners building on Solana.

Colosseum's hackathons keep getting bigger

Each Colosseum hackathon has drawn more submissions than the one before it, and the last one set the record for the largest crypto hackathon ever run.

Frontier nearly doubled Cypherpunk, pulling 2,858 submissions from founders in more than 150 countries. Its grand champion, CrowdBrain, took $30,000 and went on to both Colosseum's fifth accelerator cohort and the Solana Incubator's Cohort 5. That is the pipeline working as designed, running entirely inside Solana.

The Crypto World's Fair tests whether the same funnel pulls harder when it stops asking founders which chain they picked.

The point of opening the field is competitive pressure, not headcount. Solana founders entering the Crypto World's Fair are measured against the best teams building anywhere in crypto, and ultimately against the best startups in tech, not against the strongest Solana project in a given quarter.

The chain is disappearing from the product

Opening the hackathon tracks a shift already visible in shipped products. Teams have stopped surfacing the chain to the people using their apps, and have stopped treating that as a failure.

Wallets abstract away seed phrases behind passkeys and social logins. Payment apps settle in stablecoins without naming the settlement layer. Agentic products hold their own wallets and route across whatever rails are cheapest at execution time. The chain becomes an implementation detail, chosen by the developer for cost and speed and never surfaced to the person using the app.

Judging the product instead lines up with how these companies get built.