The hackathon
Crypto World’s Fair is an online hackathon run by Colosseum. Unlike earlier Colosseum hackathons, it isn’t Solana-only. It has eight ecosystem tracks, each with its own prize pool, on top of the overall awards that every submission competes for.
The total prize pool is $840,000. Teams can also apply to the Colosseum Accelerator, which has $2.5M in seed funding at $250,000 per team.
Submissions close on October 12, 2026 at 11:59pm PT.
Prize figures come from Colosseum’s official Crypto World’s Fair rules (September 2026). The rules don’t limit a project to one ecosystem track, but each track’s judges decide which products qualify, and Colosseum may update its rules at any time. Read the full rules at colosseum.com/worldsfair.
Why we got involved
Most builders in the Colosseum community start on Solana, and most of them enter thinking only about the Solana track. That’s $100,000 out of $840,000. A team submits one project. That project competes for the overall awards regardless, and each ecosystem track it properly integrates with puts it in front of another set of judges. From Solana, SODAX reaches five of the other track networks: Ethereum, Base, Arbitrum, HyperEVM (Hyperliquid track) and Robinhood Chain, out of 22 networks SODAX supports in total. So the idea behind the workshops was simple. A Solana team that adds SODAX to its app can serve users on those networks without writing new programs, and that gives the project a real case for more tracks. It also helps with judging. Colosseum scores submissions on functionality, impact, novelty, UX, open source and composability, and business plan. SODAX runs on mainnet, so what teams build is real. Users pay with what they already hold on the network they’re on. And integration is free: builders add their own partner fee on top, which gives a hackathon project a revenue line from the first trade.What we did
We ran four sessions with Superteam chapters, each adapted to the format the chapter could host.
Every session was presented by Hasan Toprak (Hazy), community manager at SODAX. Hazy isn’t a full-time developer. He has built several apps on SODAX with Claude Code and the SODAX Builders MCP, so the sessions came from the builder side rather than a sales pitch.
How the workshops worked
Each session had the same goal: by the end, every builder in the room should be able to name a second prize track their project could go after, and know the first step to get there.The prize structure
We opened with the money, because most builders hadn’t looked past the Solana track. We walked through how track prizes stack on top of the overall awards, and which tracks SODAX can reach from Solana.How SODAX works
A short explanation of the intent-based model. The user signs one transaction on Solana saying what they want. Independent solvers compete to fill it on the destination network, and SODAX routes and settles. SODAX never holds user funds. Teams add it to their app in TypeScript with the SDK or from any language with the HTTP API, and their Solana programs stay as they are.A real app, start to finish
The live sessions centered on Just Sweep It, a dust sweeper Hazy built on the SODAX SDK. It scans 8 networks for small leftover balances and sweeps them into one token on one network, with a 0.15% partner fee on each sweep. We demoed it in its no-wallet demo mode, then showed the Fees page with real earnings. The build story covered five steps:- Start with a real problem.
- Check which tokens SODAX supports on each network and keep the scope honest.
- Prove the money works first: one real swap with a few dollars on Base, fee confirmed, before building any UI.
- Plug in the SDK: wallets first, then quote and execute, one token at a time.
- Ship and test with real money. The app went live on June 1 and earned its first fees on June 5.
Finding a second track
We gave builders three patterns that fit most projects:- Accept deposits from anywhere. Users fund a Solana app with ETH on Ethereum or USDC on Base. Opens the Ethereum L1, Base and Arbitrum tracks.
- Cross-network collateral. Users supply on one network and borrow on another through the SODAX money market. Works with any of the five.
- Network-native assets. Solana users buy tokenized stocks on Robinhood Chain or move into HYPE on HyperEVM. Opens the Robinhood Chain and Hyperliquid tracks.
Live build (Brazil)
The one-hour Brazil session added a live build. Starting from an empty project, Hazy connected the SODAX Builders MCP to Claude Code with one command, asked the agent which tokens Solana can receive, ran a live quote (the audience guessed the number in chat first), and then built a “pay me from anywhere” page with@sodax/dapp-kit that quotes payments from Base and Arbitrum into a Solana wallet.
The session ended with an idea clinic. Attendees dropped their project in the chat, and we worked out which pattern fit, which track it opened, and the first step to take.
Recordings
Superteam Turkey
Superteam Brazil
Start building
- Integration guide generator: paste your project’s URL at sodax.com/solana and get a guide for your stack.
- Solana guide: SODAX for Solana covers the quickstart, swaps, the money market and wallets.
- SDK packages:
@sodax/dapp-kitfor React frontends,@sodax/wallet-sdk-reactand@sodax/wallet-sdk-corefor wallet connections,@sodax/sdkfor full control. - HTTP API: the Swaps API at
api.sodax.com/v1/swapsworks from any language. Lending and borrowing are SDK-only for now. - Builders MCP: add
https://builders.sodax.com/mcpto Claude, Cursor or VS Code so your AI agent works from live tokens, quotes and docs. See Builders MCP. - Example code: github.com/hazy2go/dust-sweeper (Just Sweep It) and github.com/hazy2go/swaps-without-borders.