PREDIX DOCUMENTATION
Questions become markets.
Yes/No markets settled onchain on Robinhood Chain, staked in ETH.
Overview
Predix brings binary questions into a market interface. Each question has a Yes and a No side. Pool markets are real: your stake goes into a smart contract on Robinhood Chain and payouts come back from it.
The app also shows public Chroma reference data and a separate share-price trade ticket. That ticket is a local preview and moves no funds. Wherever this documentation says pool market, it means the onchain one.
What is live
- Onchain pool markets on Robinhood Chain (chain ID 4663): creating, betting, resolution, refunds and payouts.
- Public reference market reads from Chroma, with the data source and availability shown in the app.
- Search, filters, market details, and browser-saved watchlists.
- A local share-price trade ticket that records signed paper trades in your browser only.
There is no automatic oracle. Outcomes are recorded by the pool administrator. Predix does not execute trades on Chroma, and price models never settle a market.
Creating a market
- Connect your browser wallet using the wallet control.
- Open Create market, write the question and the condition that decides it, and set a closing time.
- Confirm the transaction in your wallet and pay the network fee.
- The market appears on the board for everyone.
Anyone can create a market in the community pool. Creating one does not make you its resolver: only the pool administrator can record the outcome. Write the question so the condition is unambiguous, because nothing else decides it later.
Betting & payouts
Choose Yes or No, enter a stake and confirm the transaction. The stake leaves your wallet and is held by the contract. A single bet is capped at 1 ETH and a pool at 1000 ETH.
A market is a pari-mutuel pool. Both sides' stakes form one pot, and the winning side shares it in proportion to each stake. If 600 is staked on Yes and 400 on No and you hold 60 of the Yes side, a Yes outcome pays you 60 ÷ 600 × 1000 = 100 in total.
Your payout is therefore not fixed when you bet. Every later stake on either side changes it until the market closes. The figure the app shows is an illustration for the current pot, not a quote. You are not buying a share at a guaranteed price.
After settlement, claim from the market page. Anyone may trigger a payout, but funds always go to the entitled wallets, so a third party can pay the gas without being able to redirect the money.
Settlement & refunds
When a market closes, the pool administrator records Yes or No. That is a human decision, not an oracle, and there is no dispute process. The administrator's address is shown in the app and readable onchain.
Stakes are returned in full in three situations:
- The administrator cancels the market.
- Only one side received stakes, so there is nothing to win from the other.
- The market is still unresolved seven days after its closing time. From then on it can no longer be resolved and everyone can withdraw what they staked.
That last rule is the backstop if the administrator disappears: funds stay recoverable without anyone's cooperation.
Fees
Predix takes no fee. Nothing is deducted from a pot, and the operator cannot withdraw from the contract — no such function exists.
You pay the Robinhood Chain network fee for each transaction you send: betting, creating a market and claiming a payout. That fee goes to the network, not to Predix.
What the contract guarantees, and what it does not
Funds can only reach entitled wallets. The contract holds every stake and has no withdrawal function for the operator. Payouts are calculated from the recorded outcome and the balances, and the seven-day refund works without anyone's cooperation, so a pool whose administrator disappears still returns its stakes.
The outcome is recorded by a person, not a feed. There is no oracle, and the recorded result is final: the seven-day rule covers a result that is never recorded, not one that is recorded wrongly. The administrator's address is shown in the app and readable onchain, so the account answering for each settlement is identifiable.
The contract has not had a third-party audit. Its behaviour is fixed once deployed and its bytecode can be checked on the block explorer, but no external reviewer has examined it.
Payouts use a limited gas allowance. A wallet that is itself a smart contract may fail to receive one. The claim is not lost and can be retried, but a plain wallet address is the reliable choice.
Onchain activity is public. Your address, stake and side are visible to anyone, permanently. See the privacy page.
Reference data can be stale, incomplete or unavailable, and price models do not settle anything. Local browser records belong to one browser profile and can be removed by clearing site data — which never affects your onchain stakes. Review every wallet prompt and never enter a recovery phrase into this app.
FAQ
Do I need a wallet to browse?
No. You can explore markets and reference data without connecting a wallet. You need one to bet or to claim.
Is real money at stake?
Yes. Pool markets run on Robinhood Chain mainnet and stakes are paid in real ETH. A confirmed stake cannot be recalled, and a losing stake is not returned.
Can the operator take the money in a pool?
No. The contract has no withdrawal function for the operator. Funds can only go to wallets the contract itself finds entitled. The operator's power is over the recorded outcome, not over the balance.
What if a market is never resolved?
Seven days after the closing time it becomes refundable. Resolution is then blocked and everyone can withdraw their original stake.
Why did my expected payout change?
Payouts are proportional to a shared pot. Later stakes on either side change what each winning stake receives, right up to the close.
Does creating a market create a token?
No. A token pairing refers to an existing token and is only used for price reference. No token is minted and no liquidity pool is created.
Is Predix the Chroma service?
No. Chroma supplies public reference data. Predix does not create markets or place trades on Chroma.