Update README.md

README.md

@@ -51,7 +51,7 @@ size_categories:
 - 100K<n<1M
 - 1M<n<10M
 - 10M<n<100M
-license: other
+license: cc-by-nc-sa-4.0
 ---
 
 > 🔄 **Data Freshness & Official Source Notice**  
@@ -60,6 +60,13 @@ license: other
 >  
 > *If you are reading this on a different repository (e.g., a fork, mirror, or third-party copy), please be aware that you are looking at a static, outdated snapshot. Financial time-series data loses its value quickly without regular updates. For the latest, most accurate data, always refer back to the official [Traders-Lab/TroveLedger](https://huggingface.co/datasets/Traders-Lab/TroveLedger) repository.*
 
+> ⚠️ **Data Source & Liability Disclaimer**  
+> This dataset contains historical financial time series data aggregated via the `yfinance` Python library (sourced from Yahoo Finance).  
+> - **No Ownership:** The underlying raw financial data remains the property of its respective original sources.  
+> - **Usage:** This dataset is provided strictly for **non-commercial research and educational purposes**.  
+> - **No Warranty:** Provided "AS IS", without warranty of any kind. USE AT YOUR OWN RISK.  
+> - **Commercial Use:** If you intend to use this data commercially, it is your sole responsibility to consult the Terms of Service of Yahoo Finance and other data providers directly.  
+
 # 🗃️ TroveLedger — Financial Time Series Dataset
 
 ![TroveLedger Banner](media/Banner-TroveLedger.jpg)