What is bSOL Solana?

Could you please elaborate on what exactly bSOL Solana is? I've heard it mentioned in the context of cryptocurrency and finance, but I'm not entirely clear on its purpose or function. Is it a token, a protocol, or something else entirely? And how does it relate to the Solana blockchain? I'm interested in understanding the basics of bSOL Solana and its potential role in the broader cryptocurrency ecosystem.