Bitcoin does have a white paper, which was released in 2008 by Satoshi Nakamoto. The paper outlined the basis for a decentralized electronic cash system that would be powered by a peer-to-peer network.
While the paper did not lay out all of the details of how Bitcoin would work, it did provide a roadmap for how the system could be built.
Since then, the Bitcoin network has been up and running and has become the most widely used cryptocurrency in the world. While there have been some changes to the original protocol laid out in the white paper, overall the system has stayed true to Nakamoto’s vision.
So yes, Bitcoin does have a white paper, which was instrumental in laying the groundwork for this groundbreaking digital currency.