# v1 -> v2 ### **ATTENTION! The project has been shut down! Details can be found at:** ### **Everything written below on this and all other pages is no longer relevant and is provided for historical information only. If you continue to use the project website or its smart contracts, you do so at your own risk.** The referral structure is automatically transferred from the previous version (Cadabra 1.0), building a binary structure. The binary tree is constructed based on the date and time of the existing referrals' registration on Cadabra 1.0 platform. Referral ranks require less number of ABRA tokens. Also the ranks cost maybe decided in DAO voting if ABRA price changed and ranks cost too expensive or too cheap. --- # 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://cadabra.gitbook.io/v2/referral-program/v1-greater-than-v2.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.