USD Coin (USDC) is a digital stablecoin that was pegged to the United States dollar.

USD Coin is managed by a consortium called Centre, which was founded by Circle and includes members from the cryptocurrency exchange Coinbase and Bitcoin mining company Bitmain, an investor in Circle.
USDC is issued by a private entity and should not be confused with a central bank digital currency (CBDC).

Cloud mining is the process of cryptocurrency mining utilizing a remote datacenter with shared processing power.
This type of cloud mining enables users to mine bitcoins or alternative cryptocurrencies without managing the hardware.
The mining rigs are housed and maintained in a facility owned by mining company and the customer simply needs to register and purchase mining contracts or shares.
Since cloud mining is provided as a service, there is generally some cost and this can result in lower returns for the miner.