# Tutorial 65: ERC721 and NFTs

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ERC721, the standard for non-fungible tokens (NFTs), has revolutionized digital ownership by enabling unique assets on the blockchain. As the foundation of NFTs, ERC721 allows developers to create and manage tokenized assets like artwork, collectibles, real estate, and more. However, despite its success, ERC721 projects can suffer from various vulnerabilities and bugs that, if left unchecked, can have significant impacts, such as loss of funds, ownership issues, or exploits that can affect entire marketplaces.

With the growing adoption of NFTs, many projects have experienced critical bugs, especially those that interact with the ERC721 standard. These vulnerabilities often arise due to complex interactions between the smart contracts handling NFT minting, trading, and royalty management. From misconfigured royalties to faulty logic that governs ownership transfers, these bugs can result in unfair distribution of assets, denial-of-service (DoS) attacks, or even complete loss of control over valuable NFTs.

In this section, we will explore some of the most common bugs and vulnerabilities found in ERC721 projects, including their root causes, impact, and how to mitigate them. By understanding these issues, developers can build more secure and reliable NFT platforms, ensuring that users can confidently interact with their unique digital assets.


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