# Appreciation model The Helicon Ecosystem uses a deflationary model to ensure that, over time, the HDT token supply reduces as demand increases. Details of how the HDT token supply is controlled are as follows: • Participants obtain Liquidity Provider (LP) tokens by injecting HDT+USDT to the PancakeSwap liquidity pools. LP tokens are used for Master NFT purchases and liquidity mining. A main function of LP tokens is to lock HDT and therefore, take HDT out of circulation. • Master NFTs have a pre-determined linearized growth, determined by smart contracts. LP tokens used in the sale of Master NFTs are unlocked over a 9-day period, which temporarily takes HDT out of circulation. • The supply of HDT tokens is linearly unlocked with smart contracts, which enables a controlled release of tokens into circulation. • A portion of HDT tokens used in Regular NFT transactions will be sent to the HDT blackhole, where they will be burnt. Regular NFTs can only be purchased using HDT. • DAO voting and the Helicon Add-on System (AOS) will also integrate the use of HDT. There will be a HDT burning mechanism when using these features, with details to be announced prior to launch. --- # 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.heliconnft.com/heliconnft-1/helicon-ecosystem/helicon-drachma-token-hdt/appreciation-model.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.