> For the complete documentation index, see [llms.txt](https://hello.kodadot.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hello.kodadot.xyz/nft-standard/smart-contracts/ink-nfts.md). # Ink! NFTs Learn about the implementation of non-fungible tokens (NFTs) using the ink! smart contract language on Aleph and Astar blockchains, and explore the universe of the Ink! NFTs. ### **What is ink!?** Ink! is a domain-specific language developed by Parity Technologies to build smart contracts on Substrate and Polkadot-based blockchains. It is designed to provide developers with a safe and efficient environment to write smart contracts, and it is based on the increasingly popular language - Rust. ### **What are ink! NFTs** ink! NFTs are non-fungible tokens created utilizing the ink! smart contract language. These tokens are unique, meaning they can't be replaced with another. The uniqueness of NFTs makes them perfect for creating digital scarcity and authenticating digital content. ### **How do ink! NFTs operate on Aleph and Astar Networks?** ink! NFTs operate effectively on both Aleph and Astar networks. Smart contracts written in the ink! language facilitate the features and functionalities of these tokens. They ensure the secure invocation of NFT operations such as transfer, ownership, and other utilities. ### **Understanding Ink! NFT Marketplaces - KodaDot** KodaDot is one of the leading NFT marketplaces developed using ink! on the Aleph Zero and Astar blockchains. It provides a platform for creators and collectors to mint, sell, buy, and trade NFTs. ### **Unique features and advantages of ink! NFTs** The versatility of ink! NFTs lies in their compatibility with multi-blockchain platforms such as Aleph and Astar. They're not confined to a single network, enabling wider interoperability. ### **Conclusion** Ink! NFTs present a promising evolution in the world of non-fungible tokens, enhancing their compatibility and interoperability with multiple blockchain networks. Whether it's creating, buying, selling or earning rewards on NFTs, ink! NFTs on Aleph and Astar bring forth a whole new array of possibilities. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://hello.kodadot.xyz/nft-standard/smart-contracts/ink-nfts.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. 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.