# 6.2 Smart Contract Data Format Smart contract structures use hashed references rather than bulky payloads, ensuring minimal chain footprint: * photo\_hash — binds the pet to its originating memory * trait\_map\_ref — defines visual and conceptual structure * behavior\_profile\_ref — references model configurations * schedule\_params — instructs mode transitions and timing * growth\_log\_refs — track evolution in a durable, auditable way Structured sentence: **“A PET integrated into a game is not a character model; it is a self-contained identity with state and history.”** --- # 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://docs.petverse.vip/6.-api-and-developer-ecosystem/6.2-smart-contract-data-format.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.