No unmatched payout
Every Coin Duel round runs only when both players can lock the same stake. A 10 + 10 pot funds a 19.60 winner payout and 0.40 fee. Double, hold, and split only set the next round’s stake.
✦ A PLAYER-FUNDED IDEAFair play.
Fair play.
Full pots.
Equal-stake games and simple yes-or-no markets, designed so each match is funded before it begins.
Players fund the pot.Rules stay in the open.Good games start here.
01Matched stakesEvery game starts covered.
02Visible feesSee every payout in advance.
03Verifiable roundsCheck the seed after play.
FAIRPLAY GAMES
Coin Duel: call your next move.
Face a simulated opponent. After each flip, double, hold, split your next stake, or stop. Both sides must fund every round.
COIN DUEL · 1V1● Ready to match
FUNDED POT20.00credits
◑
DEMO OPPONENT100.00play creditsCREDITS
Both players lock10.00 each
Platform fee · 2% of pot0.40
Winner receives19.60 credits
Your next moveYou 0 · Opponent 0
Choose a move, then match the next round. Moves change risk, not the 50/50 flip.
The opponent and escrow are simulated. No funds move; no move guarantees recovery.
FAIRNESS CHECK✳
Commit. Play. Reveal.
We publish a hash of a hidden seed before you choose yours. After the flip, the seed is revealed so you can check the result.
NEXT ROUND COMMITMENT
Preparing…1Pick your stake and seed.
2Both sides fully fund the pot.
3See the result and its hash inputs.
Ready for your first matchThe round proof will appear here.
Recent demo rounds
No rounds yet. Give the sun a spin.
SOLARMARKET
Choose a side. See the funding.
Illustrative questions and prices show how a matched yes-or-no position could work. These are fictional samples, not live markets.
Sample markets3 topics
ILLUSTRATIVE QUOTESample only
Will the Sun badge win the next community vote?
Choose Yes or No, then enter shares. A simulated counterparty funds the other side so the whole potential payout is covered.
SHARES
Your play-credit cost3.20
Simulated other side6.80
Fully locked pot10.00
If your side wins · after 2% fee9.80
This preview has no live order book or event oracle. Paper positions do not settle.
Your paper positions
Pending sample outcomeNo positions yet. Pick a sample market to try it.
THE RULES
Simple enough to check.
These rules describe the prototype. A real-money service needs a licensed operator, approved game rules, an audited system, and a separate market-resolution process.
Check the revealed seed
The next server-seed hash appears before play. Your seed, the simulated opponent seed, and the round number produce the outcome hash. The revealed server seed lets you check the commitment.
Both sides cover a share
At a sample Yes price of 32¢, the Yes buyer funds 32¢ and the opposite side funds 68¢. Together they cover a 1-credit share before the result is known.
Resolution needs rules
Live markets require a named source of truth, precise deadlines, review of allowed topics, and a dispute process. The sample markets on this page stay pending.
Launch status
The Curaçao licensing route is being evaluated. SolarFren FairPlay is not licensed as a gambling operator, does not accept crypto or money, and does not offer real wagers.