# Crosschain burn / redeem Highlight offers crosschain burn / redeem (burn NFTs on one chain, to automatically redeem NFTs on another), as well as burn / redeem on the same chain. Both mechanisms use mint mechanic smart contracts that can be permissionlessly used (SeedBasedMintMechanic on the burn chain, and GaslessMechanic on the redeem chain). In the crosschain case, Highlight's engine will automatically fulfill crosschain redeems for burns using these mechanic contracts, even if the burn / redeem vector was created entirely permissionlessly. Reach out to for more details on UI support for your burn / redeem mint. --- # 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://support.highlight.xyz/knowledge-base/for-developers/crosschain-burn-redeem.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.