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Documentation Index

Fetch the complete documentation index at: https://docs.duelduck.com/llms.txt

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Prediction markets display real-time participation data that reflects how users currently evaluate the likelihood of an event.

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Chance indicator

Each prediction card can display a Chance value — a percentage representing how many participants currently support the Yes outcome. For example:
  • 72% Chance means that most voting activity currently favors the event happening;
  • lower percentages indicate stronger support for the No outcome.
This value updates dynamically as users continue participating in the market and provides a simple way to visualize current market sentiment.

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Pricing models

The Prediction API supports two participation models:

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Fixed price

In a fixed-price prediction, every user pays the same predefined amount to participate. This model creates a simple and standardized voting experience where all participants contribute equally.

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Price range

In a range-based prediction, the API Owner defines a minimum and maximum stake amount. Users can then choose how much they want to contribute within that range when placing a vote. Because rewards are distributed proportionally, users who contribute larger stakes receive a larger share of the reward pool if their selected outcome wins. This model introduces more flexibility and allows users to adjust their exposure and potential reward size based on their confidence in the outcome.

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Pool mechanics and reward distribution

All user stakes are temporarily held within the prediction pool while the market remains active. Funds are not immediately distributed after participation. Instead, they remain locked within the smart contract infrastructure until the prediction is resolved. After resolution:
  • platform fees are automatically deducted;
  • the losing side’s pool is redistributed to winning participants;
  • payouts are calculated proportionally based on each user’s contribution.
All calculations and transfers are processed automatically on-chain through Solana smart contracts, ensuring transparent and verifiable reward distribution.