Is Braintrust a DAO?

Excuse me, but could you clarify if Braintrust is, in fact, a Decentralized Autonomous Organization (DAO)? I'm curious to know if it operates under a similar model where decisions are made collectively by its members, and if it utilizes smart contracts on a blockchain to enforce rules and facilitate transactions. It would be greatly appreciated if you could elaborate on this aspect of Braintrust's structure and operations.