Introduction

BRC-721 is an experimental standard that introduces non-fungible tokens (NFTs) to the Bitcoin network. Inspired by the BRC-20 standard, BRC-721 enables users to create, mint, and transfer unique digital assets. It offers several advantages over native NFTs, such as reduced minting fees, improved Bitcoin network space utilization, and compatibility with existing NFT platforms and tools.

Unlike native NFTs, which store images for each token and incur high fees and network space usage, BRC-721 only requires image storage during deployment, saving costs and space during minting operations. Additionally, BRC-721 supports off-chain storage services like IPFS, further optimizing Bitcoin space utilization and providing flexible attribute information for each token.

Furthermore, BRC-721 addresses the indexing limitations of native NFTs. It adopts a JSON specification similar to BRC-20, enabling effective indexing and searching of NFTs within a collection. This ensures efficient management and retrieval of NFTs within the BRC-721 ecosystem.

BRC-721 aligns its token URI and metadata specifications with the popular ERC-721 standard, enabling seamless integration with the existing NFT ecosystem. By embracing the widely accepted standards, BRC-721 facilitates quick adaptation and interoperability, supporting the definition of NFT attributes and rarity information.

In the current market, ERC-721 standard NFTs are widely recognized. BRC-721 leverages similar token URI and metadata specifications to swiftly adapt to the established NFT ecosystem. This compatibility encourages the adoption and usage of BRC-721 in various NFT-related applications.

Overall, BRC-721 aims to expand the capabilities of tokenization on the Bitcoin network, offering a standardized framework for creating, managing, and exchanging unique digital assets in the form of NFTs. It invites contributions and improvements to further enhance its functionality and address the evolving needs of the NFT ecosystem.