In Brief:
- Solana Mobile and RadiantsDAO opened CLOCK IN, a 30-day hackathon carrying $135,000 in prizes, running Sept. 8 to Oct. 8.
- Ten grand prizes pay $10,000 each, five honorable mentions pay $5,000 apiece, and a separate $10,000 SKR bonus goes to the best Solana Mobile Stack integration.
- It’s the third Solana Mobile hackathon. The last one, MONOLITH, closed with 403 submissions from 66 countries.
Solana Mobile’s third developer hackathon is live. CLOCK IN opened Sept. 8 with $135,000 in prizes and a 30-day build window, with submissions due Oct. 8.
RadiantsDAO is running it, the same collective behind the previous two editions.
we’re live!
join us on Shipped as we unpack the @solanamobile CLOCK IN Hackathon, with $135k in prizes for builders creating mobile-first apps on Solana Mobile.Seeker | Solana MobileView on X ↗
The money splits three ways. Ten grand prize winners take $10,000 each, five honorable mentions get $5,000 apiece, and a separate $10,000 bonus paid in SKR goes to the best integration with the Solana Mobile Stack. That last line item is what pushes the pool past the $125,000 mark of the previous event.
Cash isn’t the only payout. Winners also receive Seeker devices, placement in the Solana dApp Store, marketing support and a one-on-one call with Solana co-founder Anatoly Yakovenko.
The livestream
Solana Mobile promoted the competition Tuesday on the fourth episode of its SHIPPED series. “we’re live!” the company posted. “join us on Shipped as we unpack the @solanamobile CLOCK IN Hackathon, with $135k in prizes for builders creating mobile-first apps on Solana Mobile.”
The lineup included Solana Mobile’s general manager, the RadiantsDAO team hosting the hackathon and Backyard, a winner from a previous round.
What qualifies
Radiants set the bar at MONOLITH: a working Android APK with Solana Mobile Stack integration, Mobile Wallet Adapter support and a design that is demonstrably mobile-first rather than a wrapped web app. Registration runs through solanamobile.com/hackathon and the Radiants-hosted page at solanamobile.radiant.nexus.
The last one
MONOLITH ran Feb. 2 to March 9 under the tagline “Build something they can’t move.” It drew 888 signups and 403 completed submissions across 66 countries, a 43% jump in participation over the inaugural event.
Winners included Cashflow, Pumpville (official site) and SeekerClaw.
The first Solana Mobile hackathon ran in 2025 with a $100,000 pool. Radiants introduced MONOLITH as the second, with “$125,000+ in prizes” plus a special SKR integration prize.
The install base builders are shipping into
Seeker shipped in August 2025 with roughly 100 apps in the dApp Store. The store now counts more than 100,000 engaged users.
SKR, the token the bonus prize pays out in, has a capped supply of 10 billion. Roughly 42,000 wallets held it as of July 31. Holders stake to Guardians, which verify device identity and review dApp Store submissions, on two-day staking epochs, with inflation starting at 10% annually.
Seeker Summer, the quest campaign that ran alongside Season 2, closed Aug. 30 after four two-week rounds. Round 2 opened July 30 with 27 million SKR available to eligible owners, up from 25 million in the first round. More than half the Round 1 allocation was staked rather than moved or sold.
Submissions to CLOCK IN started landing within the first 24 hours.
