> For the complete documentation index, see [llms.txt](https://capsid.gitbook.io/capsid/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://capsid.gitbook.io/capsid/overview/the-protocol.md).

# The Protocol

Capsid's Hold-To-Earn protocol is an NFT derivative protocol, which enables NFT owners to provide more utilities to the ecosystem, and, at the same time, generate income, without risking losing ownership.

With Capsid's Hold-To-Earn protocol, NFT owners are able to issue **Non-Fungible Rights** (which are by themselves NFTs). An **Non-Fungible Rights** is tradable, and hence grants the owner **rights to use** on the underlying assets. On one hand, it generates income for the owner of the underlying assets. On the other hand, the rights owner is authorized to develop and monetize NFT derivative artworks and/or services.

One example use case of this protocol is automatic (in the sense that no manual intermediary needed to facilitate the transaction) short-term rental of in-game assets for blockchain-based games.