callsheet is a prediction game for hackathons and contests. you call who you think wins, before the judges do.
for predictors
- sign in with X.
- browse active campaigns (one per project).
- answer questions about each project's outcome before the deadline.
- when the event resolves, scoring runs and winners are picked.
- winners earn callpoints (CP) and can enter raffles for prizes.
for project owners
- claim your project (X handle match).
- write a question about your project for predictors to answer.
- optionally pledge USDC or USDT to fund a prize for whoever calls it right.
- funds go directly to a self-custodied solana wallet. callsheet never touches your money.
for the curious
- it's free to play.
- one ballot per X account.
- answers are sealed when you submit. no edits.
- pledges are on-chain and final.
- scoring is final once a campaign resolves.
glossary
callsheet borrows its language from theater, newsrooms, and ledgers. quick translations:
- callsheet
- the platform. also: the daily roster of who's on stage. our list of who's about to win.
- ballot
- your sealed set of predictions for an event. one per X account.
- campaign
- a single question about a project. you answer one at a time.
- event
- a hackathon or contest that hosts campaigns. callsheet supports multiple events at once.
- round
- the active prediction period for an event. opens, locks at a deadline, resolves when judges call winners.
- seal
- locking in an answer. once sealed, no edits, no take-backs.
- pledge
- a project owner depositing USDC or USDT to fund a prize. on-chain, irreversible.
- contribution
- anyone topping up a campaign's prize pool. earns a contributor badge. no payout entitlement.
- callpoint (CP)
- points you earn for correct predictions. spend them on raffles for prizes.
- raffle
- a prize pool you enter with CP. draws happen after rounds resolve.
- roster
- the list of all projects across all events on the platform.
- review
- rate any project 1 to 5 stars, mark them likely or unlikely to win, leave a written take.
- owner desk
- where project owners manage their projects, write campaigns, and pledge prizes.
- operator wallet
- the solana wallet that holds pledged funds in self-custody. callsheet does not touch the money.
- perfect score
- a ballot that called every answer correctly. perfects split most of the prize pool.
- conditional prize
- a pledge that only pays out if the project also wins a hackathon prize. fall through otherwise.
- badge
- a permanent on-platform credit for actions: contributor, raffle winner, perfect score, etc.
questions? dm @25thprmr.
this page will be updated as the platform grows. last reviewed: may 10, 2026.