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description: Proof of fairness - chainlink datafeeds
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# Chainlink & Datafeeds

### **Overview**&#x20;

Chainlink datafeeds ensure Betfin.io's decentralized games receive reliable and tamper-proof price data, maintaining the integrity and fairness of financial and prediction games.

### **Reliable Price Data**

* **High-Quality Sources:** Data is gathered from premium and verified providers.
* **Decentralized Oracles:** Multiple independent oracles aggregate the data to ensure accuracy.

### **How It Works**

1. **Data Aggregation:** Chainlink oracles collect data from numerous reliable sources.
2. **Data Transmission:** The aggregated data is securely transmitted to Betfin.io's smart contracts.
3. **Data Utilization:** Betfin.io uses this data for game outcomes and financial predictions.

<figure><img src="https://1825326731-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSinPZEOuPy8TM9anY3n8%2Fuploads%2F71ydCPeqTMsRIfFpDYsV%2FScreenshot%202024-02-03%20at%2019.22.12.png?alt=media&#x26;token=5897c5c8-f25d-4fc1-b46f-0ac5fb60dd2b" alt=""><figcaption><p>This is the example of BTC/USD datafeed on <a href="https://data.chain.link/feeds/polygon/mainnet/btc-usd#operator-linkforest">https://data.chain.link/feeds/polygon/mainnet/btc-usd#operator-linkforest</a></p></figcaption></figure>

<figure><img src="https://1825326731-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FSinPZEOuPy8TM9anY3n8%2Fuploads%2Fagsmk8F4grEByJ9rmImQ%2FScreenshot%202024-02-03%20at%2019.23.17.png?alt=media&#x26;token=be4bc343-2a15-4b01-84e2-9adfaa5d6ff0" alt=""><figcaption><p>BTC/USD price datafeed: <a href="https://data.chain.link/feeds/polygon/mainnet/btc-usd#operator-linkforest">https://data.chain.link/feeds/polygon/mainnet/btc-usd#operator-linkforest</a></p></figcaption></figure>

You can find more information about chainlink datafeed here: [https://data.chain.link/feeds](https://data.chain.link/feeds) you can also check the exact datafeed such as [https://data.chain.link/feeds/polygon/mainnet/btc-usd#operator-linkforest](https://data.chain.link/feeds/polygon/mainnet/btc-usd#operator-linkforest) that is used for BTC/USD predict game

### **Benefits**

* **Reliability:** Ensures the data is accurate and reflects real-world prices.
* **Security:** Prevents data manipulation through decentralized verification.
