# Mint Factory ## LiSTX Mint Factory LiSTX Mint Factory is the main smart contract LISA users interact to mint/burn LiSTX/vLiSTX. LiSTX Mint Factory implements the logic of LiSTX minting/burning process, while the relevant data is stored at LiSTX Mint Registry. Such separation of the logic and the data storage allows for future upgrades of the logic, while preserving the data layout. ### Request to mint LiSTX When a user requests to mint LiSTX, a mint request ticket (in form of NFT) is issued to the user and the relevant STX is sent to LISA Vault. In order for a user to start stacking from the next cycle, a mint request must be confirmed at least 300 blocks before the prepare stage of stacking begins for the next cycle (100 blocks before the current cycle end). Otherwise, the mint request is queued for the following cycle. ### Finalise the mint request When LiSTX is ready to be minted (which is 432 blocks after the relevant stacking cycle start), the user can finalise the mint request at which time the mint request ticket will be burnt in exchange for LiSTX. ### Revoke the mint request Subject to availability of unlocked STX at LISA Vault, a user may revoke a mint request, in which case the mint request ticket is burnt and the relevant STX sent to the user. A user may not revoke a mint request if the unlocked STX at LISA Vault were sent to Strategies for stacking, or if the unlocked STX were redeemed to meet any outstanding burn requests. ### Request to burn LiSTX When a user requests to burn LiSTX, a burn request ticket (in form of NFT) is issued to the user and the relevant LiSTX is sent to LISA Vault. While the user waits to burn LiSTX, the stacking rewards will continue to be accrued. ### Finalise the burn request Finalisation of a burn request is subject to the availability of unlocked STX at LISA Vault. When a burn request is made, LiSTX Mint Factory will try to finalise immediately (in which case the user would immediately burn the burn request ticket and receive the relevant STX). Otherwise, the burn request is queued. ### Revoke the burn request A user may revoke a burn request any time, in which case the burn request ticket will be burnt and the relevant LiSTX sent to the user. ## LiSTX and vLiSTX LiSTX may be wrapped to vLiSTX any time, and vice versa. --- # 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.lisalab.io/supported-tokens/stx/how-listx-architecture-works/mint-factory.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.