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How It Works

Ospex leverages the Chainlink Decentralized Oracle Network (DON) to facilitate the creation and scoring of sports contests across various leagues, including NFL, NBA, MLB, NHL, NCAA football, and NCAA basketball.

Contest Creation and Scoring​

When contests are created, the unique identifiers for the contest from three independent sports APIs are stored on the blockchain as reference IDs. These IDs are then utilized to verify the final results once the contest concludes. If the results from these sources match, they are recorded on chain. Subsequently, any speculations dependent on these results are scored accordingly.

Handling Discrepancies​

What happens if the results from the sources do not match? See Edge Cases for detailed information on how Ospex addresses discrepancies in contest results.

Choosing the Chainlink DON allows Ospex to ensure that contest data is accurate, reliable, and tamper-proof.

Next Steps​

  • Familiarize yourself with the types of contests and speculations available on Ospex.
  • Explore how to create and score contests.
  • Learn more about how contests and speculations are scored.

For more detailed instructions and tips, check out our Getting Started guide.