USD Coin (USDC) is a type of stablecoin that is pegged to the US dollar, while Bitcoin is a decentralized digital currency that operates independently of any government or financial institution. The key differences between USDC and Bitcoin include the following:

1. Stability: USD Coin is designed to be stable, with its value pegged to the US dollar. In contrast, the value of Bitcoin is subject to fluctuations due to market demand and supply.

2. Centralization: USD Coin is centralized, with its development and management overseen by a single organization. Bitcoin, on the other hand, is decentralized, with its development and management distributed across a global network of users.

3. Transaction Speed: Transactions involving USD Coin are generally faster and cheaper compared to those involving Bitcoin due to differences in their underlying technology.

4. Purpose: USD Coin is primarily designed for use as a digital medium of exchange, while Bitcoin has been touted as an alternative to traditional currencies and a store of value.

Overall, USD Coin and Bitcoin are different types of digital assets with distinct features and purposes. While they may both be used for online transactions, they serve different needs and have different underlying technology and governance structures.