A Whitepaper is a technical document or report that explains how a cryptocurrency works.

It provides a vision of the roadmap the developers will take, proving details about the purpose of the asset, what it does, what it solves, and how the team will go about accomplishing this.

Some whitepapers get very specific about the inner workings of the asset and possibly its network or the network it will use, while others take a more high-level approach.

Cryptocurrency teams use whitepapers not only as a technical resource for other developers but also as a marketing tool to would-be investors who are possibly interested in investing in the project.

You can read the original Ethereum whitepaper here.

You can read the original Bitcoin whitepaper here.