# Expand Expert Marketplace The PIBBLE platform offers level based standards for users. Among those levels, Professional level users may upload contents in Full HD and sell their contents while having their copyright protected. The PIBBLE platform uses BitDNA to protect the copyright of professional contents, by extracting characteristics of contents, hashing its value, and writing the hashed value into blockchain. In other words, as this hash value is unique to the content, comparing multiple hash values can confirm whether a content is a duplicate. Also, professional contents’ use of copyright, movements since its creations are managed on the blockchain network. Therefore, ownership data of copyrights are managed together. Because it is impossible to edit or delete records if image’s movement process is written real-time on the blockchain network. --- # 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://pibble.gitbook.io/pibble-whitepaper/pibble-1.0/pibble-ecosystem-summary/expand-expert-marketplace.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.