What is sanctum on Solana?

I've been hearing quite a buzz in the cryptocurrency community about Sanctum on Solana. Could you please elaborate on what it actually is? Is it a new token, a decentralized application, or a unique protocol? What are its key features and how does it leverage the Solana blockchain? I'm particularly interested in understanding its potential use cases and how it aims to differentiate itself from other projects in the space. Additionally, could you provide any insights into its current market position and future prospects?