# MBAs - Mint and Burn Assets Mint and Burn Assets are contracts that have two major functions: minting assets and burning assets, where presumably the burn in some additional functionality. These contracts have custody, so they can be used to issue collateralized assets and loans. MBAs can use any of the minting structures of MOAs, but can also use the minting method *collateralize*. Collateralizing assets deposits them to contract custody. The contract's creator does not have access to them, and they are guaranteed to be retrievable pursuant to the contract's terms, generally by burning minted assets. A collateralize block must specify the following arguments: * Assets that can be collateralized * Whether this list is mutable * How assets are to be minted against the collateral Assets can be minted at a fixed rate relative to collateral assets, proportionally to the total volume of assets in contract custody, up to a maximum LTV, and can require an oracle commitment. --- # 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.glittr.fi/contract-primitives/mbas-mint-and-burn-assets.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.