Prediction Game

A Decentralized Prediction Game

Overview

The DeFiNodal prediction game is a fully decentralized game where users can predict BTC/USD price movements using POL tokens. The game leverages Chainlink's decentralized price feeds for accurate and tamper-proof price data, ensuring complete decentralization and transparency.

Game Mechanics

Time Intervals

Users can predict asset prices across multiple time frames:

  • 1 minute

  • 5 minutes

  • 15 minutes

  • 1 hour

The countdown begins when the transaction is confirmed. There are no fixed ending periods, and additional intervals may be added or modified in the future.

Asset Price Information

The game currently focuses on BTC/USD price predictions, with decentralized price feeds provided by Chainlink. Users can verify pricing data through the following contract address: 0xc907E116054Ad103354f2D350FD2514433D57F6f on the Polygon network.

Price updates occur every 5-10 seconds, though delays may occur due to:

  • Polygon chain congestion

  • Chainlink price feed latency

Odds and Returns

The odds system determines prediction returns and adjusts dynamically based on betting volume:

  • More UP predictions → Lower UP odds, Higher DOWN odds

  • More DOWN predictions → Lower DOWN odds, Higher UP odds

Example: If the odds for "UP" are 1.70 and a user places 1 POL, a correct prediction would yield 1.70 POL in returns.

How to Place a Prediction

  1. Connect your wallet and ensure sufficient POL balance (currently 1 POL per prediction)

  2. Select your desired time frame

  3. Choose your prediction direction ("UP" or "DOWN")

  4. Confirm the transaction in your wallet

Technical Considerations

Slippage Protection

To protect users from unfavorable price movements, the game implements a 5% slippage tolerance:

  • Transactions revert if odds change by more than 5% during confirmation

  • Transactions revert if BTC/USD price changes by more than 5% between prediction placement and confirmation

Price Execution

Important notes about price execution:

  • Official BTC/USD price is recorded at transaction confirmation

  • Actual execution price may differ from the displayed price at click-time due to:

    • Polygon network congestion

    • BTC price volatility

Smart Contract Integration

  • All game logic and transactions execute on-chain through smart contracts

  • No intermediaries are involved in the process

  • Full transparency is maintained through blockchain verification

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