Bet on the truth. Without showing your hand.
Every other prediction market broadcasts your every move — your size, your side, your whole strategy. TruthMarket keeps your position encrypted on-chain. The crowd's odds stay public; your edge stays yours.
On Polymarket and Kalshi, everyone can see what you do
Full transparency sounds healthy — until it's your money. When every order is public and tied to your wallet forever, the market quietly turns against the people who are actually right.
You get tracked the moment you win
Profitable wallets are public targets. Dozens of dashboards exist purely to find and follow them — the better you do, the more eyes copy your every move.
Copytraders front-run your edge
As soon as a big order lands, copy bots pile in and the price moves before you've finished building. Sharp traders even run secondary accounts just to stay unseen.
Your beliefs become a permanent record
Every political, financial, or personal bet is etched on-chain next to your address forever — searchable by anyone, including people you'd rather not share it with.
Visible flow distorts the odds
When the crowd can see who's betting what, it herds toward big wallets instead of toward the truth — the exact signal a prediction market is supposed to find.
The Evolution of Prediction Markets
Centralized Bookmakers
Black-Box Casinos & Offshore Custody
Traditional sportsbooks and early prediction sites operated as opaque silos. Bettors faced exorbitant 5-10% rake fees, arbitrary account freezes for winning, and severe counterparty insolvency risk with zero on-chain transparency or proof of reserves.
Public DeFi Era
Polymarket, Kalshi & The Surveillance Trap
Blockchain revolutionized prediction markets by enabling non-custodial trading and global liquidity pools. However, 100% public on-chain transparency introduced a fatal structural flaw: complete financial surveillance and orderbook exploitation.
Zama FHEVM Breakthrough
Computing Directly on Blind Data
Fully Homomorphic Encryption (FHE) on Ethereum achieves what was previously thought impossible: performing mathematical operations (addition, subtraction, order matching) directly on encrypted ciphertexts without ever decrypting them in RAM or on-chain.
TruthMarket Protocol
Privacy-Preserving Crowd Wisdom
The first decentralized prediction market where odds and volume remain 100% public for global price discovery, but individual positions, betting sizes, and payout claims are mathematically sealed inside Zama FHE handles.
Keep the wisdom of the crowd. Lose the surveillance.
Scroll down through the architecture below to see how Zama FHEVM protects your trades in real time without sacrificing price discovery.
Encrypted positions
Your amount and side are encrypted in your browser before they ever reach the chain. No order book, event, or balance can be tied back to you.
K-anonymous odds
Aggregate odds stay publicly readable — but only released as batched snapshots gated by a K-anonymity threshold, so no single bet can be reverse-engineered from a snapshot diff.
Confidential payouts
Winnings settle privately. Only your wallet can decrypt what you were paid — no one can reverse-engineer your position from the result.
🔒 Encrypted locally in your browser. Not even validators can read your amount.
Inside the Zama FHEVM Engine
Watch how encrypted data travels through the protocol in real time.
Client-Side Encryption
When you place an order on TruthMarket, the Zama FHE SDK encrypts your bet size and direction using the network's public key. Neither RPC nodes nor validators can see what you bet or how much.
// 1. Encrypt in browser memory
const encryptedAmount = await fhevm.encrypt64(10000n);
const encryptedSide = await fhevm.encrypt8(1); // YES
// 2. Transmit ciphertext to contract
await truthMarket.placeOrder(encryptedAmount, encryptedSide);Side by side
The same public odds. A fundamentally different privacy model.
Four steps. Nothing leaks.
No new mental model to learn. It feels like any market — the privacy happens underneath.
Top up once
Convert test USDC into a confidential balance in a single step. After that, betting is one click.
Bet privately
Pick a side and a size. Both are encrypted in your browser before the transaction is ever broadcast.
Watch the signal
Odds refresh via K-anonymous snapshots — released only after ≥3 new bets — so no snapshot diff maps to a single trader.
Settle confidentially
When the market resolves, claim your winnings privately. Only your wallet can decrypt your balance.
Privacy by protocol, not by promise. Your amount and side are encrypted in your browser and stay encrypted inside the contract — the chain itself enforces it. There is no admin, log, or backdoor that can undo it. You can always decrypt and verify your own position with your wallet.
Trending markets
Public odds you can read at a glance — positions you can't.
Frequently Asked Questions
Everything you need to know about TruthMarket, Zama FHEVM, and the end of financial surveillance in prediction markets.
About TruthMarket — The Mission
TruthMarket was built on a foundational premise: True market wisdom requires freedom from fear. When prediction markets force participants to expose their wallet identities and financial stakes to public scrutiny, people self-censor or get exploited by predatory MEV algorithms. By integrating Zama's Fully Homomorphic Encryption directly into Ethereum smart contracts, we separate public price discovery from private individual wealth.
Trade on what you believe. Tell no one.
Grab some test USDC, take a position, and watch the odds move — while your wallet stays invisible.