Terms of Service

These Terms of Service ("Terms") form a binding agreement between you ("you") and Predictifi ("Predictifi", "we", "us") governing your access to and use of the Predictifi prediction market protocol and its web interface (collectively, the "Service").

By connecting a wallet, accessing the Service, or taking any position, you confirm that you have read, understood, and agree to these Terms and our Privacy Policy. If you do not agree, you must not use the Service.

You must be of legal age in your jurisdiction and have the legal capacity to enter into binding agreements. By using the Service you represent that:

• You meet the minimum legal age in your jurisdiction;
• You are not located in, or accessing the Service from, any jurisdiction where prediction markets are prohibited;
• Your use of the Service does not violate any applicable law.

The Service is non-custodial. You connect a self-custodied wallet and sign a one-time message to prove ownership; your wallet address is your identifier. We never take custody of your funds or private keys. You are responsible for:

• Maintaining the security of your wallet and keys;
• All activity that occurs under your wallet;
• Any network (gas) costs associated with on-chain transactions.

The Service is deployed on Base Sepolia, a test network. Positions are denominated in test USDC, which has no monetary value and cannot be exchanged for currency. Nothing on the Service is an offer of a real-money product.

Positions settle on-chain via open-source smart contracts covered by an in-repo Foundry test suite (unit, fuzz and stateful-invariant). Those contracts have not been reviewed by an external security firm — no third-party audit has been performed. Prices are determined by an on-chain logarithmic market scoring rule (LMSR) and move only as participants trade. Outcomes are uncertain; the Service does not guarantee any return, and participation involves the risk of losing your funds.

By trading, you acknowledge:

• LMSR pricing. Prices fluctuate in real time as positions are taken. The displayed price is an estimate; execution occurs at the on-chain quote at confirmation.
• Trading fee. A total 2% fee applies to each trade, split into a 0.5% creator fee, a 0.5% resolver fee and a 1.0% liquidity / recipient fee. See the Compliance page for the full schedule.
• Finality. Confirmed on-chain transactions cannot be reversed.

Eligible markets support leveraged positions (2× / 3× open to all; 5× and 10× unlock with traded volume) within a fixed margin band of $50–$2,000. Leveraged positions can be liquidated if price moves against them past the liquidation threshold, resulting in loss of the posted margin. The liquidation price is shown before you open a position.

By creating a market, you represent that:

• The market has clear, objective, verifiable resolution criteria;
• The close date and resolution timeline are reasonable and accurate;
• The market does not promote unlawful activity.

Market creators earn the 0.5% creator fee on trades in their markets.

Resolution is administrator-declared. Anyone may propose the winning outcome by posting a USDC bond — markets created with restricted resolution accept a proposal only from the administrator — which immediately freezes trading in that market. A protocol administrator then declares the final outcome, rejects the proposal, or voids the market. There is no dispute window and no automatic finalization. If no administrator acts within 30 days of a proposal, anyone may call the permissionless void-stale function to void the market; holders then claim a refund.

A voided market refunds your net amount spent out of that market's remaining collateral, with no fee deducted. Refunds are paid in the order they are claimed, and each one reduces the collateral available to the rest. A market whose remaining collateral does not cover every holder therefore pays the earliest claims and leaves the last ones short: a late claim may recover less than 100% of your net amount spent, or nothing at all. You acknowledge that the amount you recover from a voided market depends on when you claim relative to other holders.

You acknowledge that resolution therefore depends on a protocol administrator acting. The Service does not guarantee that any market will be resolved, or resolved within any particular time.

You agree not to:

• Use the Service for any unlawful purpose;
• Manipulate market prices through coordinated activity or wash trading;
• Exploit bugs or unintended behavior for unfair advantage;
• Attempt unauthorized access to the Service or its infrastructure.

The Service is provided "as is" and "as available" without warranty of any kind. To the maximum extent permitted by law, Predictifi disclaims all warranties and is not liable for any indirect, incidental, or consequential damages, including loss of funds arising from smart-contract behavior, network conditions, or your own wallet management.

We may modify these Terms at any time. Material changes are reflected by updating the effective date above. Continued use after a change constitutes acceptance of the updated Terms.

These Terms are governed by applicable law without regard to conflict-of-law principles. Disputes will be resolved through binding arbitration or in courts of competent jurisdiction.

For questions about these Terms, review our Compliance page or the Help Center.