Gemini is a cryptocurrency exchange platform. Here are key features and details about the Gemini exchange:

1. **Founding and Ownership:**
– Gemini was founded in 2014 by Cameron and Tyler Winklevoss, who are well-known for their involvement in early Bitcoin investments.
– The exchange is headquartered in New York City, and it is regulated by the New York State Department of Financial Services (NYDFS).

2. **Regulation and Security:**
– Gemini is known for its emphasis on security and regulatory compliance. It has obtained a BitLicense from the NYDFS, which allows it to operate as a cryptocurrency exchange in the state of New York.
– The exchange complies with regulatory standards and undergoes regular security audits.

3. **Cryptocurrencies:**
– Gemini supports a variety of cryptocurrencies, including Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), Bitcoin Cash (BCH), Zcash (ZEC), and others.
– The platform has expanded its offerings over time to include various digital assets.

4. **Trading Pairs:**
– Users on Gemini can trade various cryptocurrency pairs, such as BTC/USD, ETH/USD, and others.

5. **Gemini Dollar (GUSD):**
– Gemini introduced its own stablecoin called the Gemini Dollar (GUSD). This is a fiat-collateralized stablecoin pegged to the value of the U.S. dollar.

6. **Gemini API:**
– Gemini provides an Application Programming Interface (API) that allows developers to integrate Gemini’s trading and market data into their applications.

7. **Gemini Exchange App:**
– The exchange offers a mobile app for both iOS and Android, allowing users to trade cryptocurrencies and manage their accounts on the go.

8. **Institutional Services:**
– In addition to serving retail customers, Gemini provides services for institutional investors, including Gemini Custody, Gemini Clearing, and Gemini Fund Solutions.

9. **Winklevoss Twins’ Role:**
– Cameron and Tyler Winklevoss, commonly known as the Winklevoss twins, actively promote and advocate for the adoption of cryptocurrencies. Their involvement in Gemini has contributed to the exchange’s visibility.

Developments in the cryptocurrency space can occur rapidly, for the latest and most accurate information, it’s recommended to visit the official Gemini website.