tyca is a real prediction-market exchange you play with free coins: live crowd odds on sports, politics, crypto & AI, an automated market maker + limit order book, live charts, parlays, and seasonal leaderboards. No deposits, no cash prizes, never real money. Every profile carries a ledger-derived win-loss record you can't fake, the whole coin ledger is tamper-evident, and every settlement checks a named public source daily. Learn markets risk-free — then prove you saw it coming.
No reviews yetBe the first to leave a review for tyca
Maker
📌
Hey Product Hunt! 👋
Prediction markets exploded into the mainstream this year — election night, the World Cup, billions traded. But every single one wants your money first.
tyca is the one you can actually PLAY.
It's a real exchange under the hood — automated market maker + limit order book, live price charts, positions, parlays — but you trade with free play-money coins. 5,000 at signup, topped up daily. No deposits, no cash prizes, nothing to buy. Legally a game, not gambling.
What makes it different:
🎯 Every % is a live price set by traders — not a poll
📈 Sell any time: lock profits before a market even resolves
🧾 Public track records — every profile shows a ledger-derived W–L you can't fake. Winners have receipts.
🔍 The entire coin ledger is tamper-evident and publicly verifiable
⚖️ Settlements check against named public sources, audited daily
📰 The Crowd Brief — a daily page of the biggest odds moves and the news that moved them
I built tyca because reading the world well is a skill worth showing off — and you shouldn't have to risk rent money to prove it.
Ask me anything, and tell me: what market should we open next?
Report
How does the tamper-evident ledger actually work in practice, and can users audit their own transaction history to verify it holds up over time?
Report
Maker
@orekmeral29034 Every coin movement is an append-only entry chained to the one before it, nothing can be quietly rewritten, and you can see your full history plus our public conservation checks on the transparency page.
Report
How does the coin ledger actually stay tamper-evident if the whole thing runs on your own servers, and can users audit their own personal ledger history from the outside?
Report
Maker
@neefz2n Fair point — it's our servers, so what you get today is a chained append-only ledger, public conservation checks, and settlement receipts tied to named sources; independent outside verification is on the roadmap and I'd rather not overclaim it.
Report
How does the ledger stay tamper-evident on the user side, like can I audit my own trade history or is verification only internal?
Report
Maker
@turkbayyig96068 Your complete trade and settlement history is visible in your account, every settlement cites its source, and the ledger's public checks live on our transparency page.
How does the tamper-evident ledger actually work in practice, and can users audit their own transaction history to verify it holds up over time?
@orekmeral29034 Every coin movement is an append-only entry chained to the one before it, nothing can be quietly rewritten, and you can see your full history plus our public conservation checks on the transparency page.
How does the coin ledger actually stay tamper-evident if the whole thing runs on your own servers, and can users audit their own personal ledger history from the outside?
@neefz2n Fair point — it's our servers, so what you get today is a chained append-only ledger, public conservation checks, and settlement receipts tied to named sources; independent outside verification is on the roadmap and I'd rather not overclaim it.
How does the ledger stay tamper-evident on the user side, like can I audit my own trade history or is verification only internal?
@turkbayyig96068 Your complete trade and settlement history is visible in your account, every settlement cites its source, and the ledger's public checks live on our transparency page.