Works in Chrome, Brave, or Edge (any Chromium browser). Runs on Solana devnet with test USDC — no real money.
1 · Install it
Unziponside-extension.zip — you'll get a folder called onside-extension.
Open chrome://extensions (or brave://extensions / edge://extensions).
Turn on Developer mode (toggle, top-right).
Click Load unpacked and select the onside-extension folder (the one containing manifest.json).
Onside appears in your toolbar — click the puzzle-piece icon and pin it.
2 · Try it
Open a football match on YouTube — any youtube.com/watch… video (a full match or highlights works best).
The Onside overlay loads over the video. Click the Onside icon to open the board.
Select the France vs England fixture.
Both starting XIs appear on the side rails, each with a ⚽ next-goalscorer price.
Place a bet: tap a player (or a market — match result, corners, total goals) → pick your stake → Confirm. Your USDC balance updates and your position shows up.
Tap-to-bet: turn on Tracking — the browser detects the players and follows them; tap one on the pitch to tag your next scorer.
Settle & verify: settled markets pay out to your wallet in USDC. Check the on-chain Merkle-proof settlement on the Verify page.
Good to know — the player tracking runs 100% in your browser (a YOLO model, no server). Everything settles trustlessly on Solana from TxODDS TxLINE-signed match data. When the live odds proxy is offline the rails show representative demo prices so you can still place and settle bets.