# Source of revenue #### Crypto primary market: NFT sales revenue NFT assets are sold as a pass to the SisuRace platform when it is first opened to the market and users. #### Crypto secondary market: NFT transaction fee (royalty fee) As a part of the smart contract’s design, a royalty fee is charged upon having a transaction in the secondary market. #### Service revenue Charge fees for using the official NFT market (built by SisuRace), and for using payment services such as token selloff, token purchase, token exchange, etc. #### Revenue resulting from positive externality Companies of traditional games, Blockchain games, hardware and related products all have the motive to purchase a promotion service for their products from the platform by providing money, tokens of their games (apply to Blockchain games), promo codes, hardware, etc. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://sisurace.gitbook.io/white-paper/business-model/source-of-revenue.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.