Developer Explains How Solana NFTs Work Under the Hood Using Token Extensions

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A developer exploring Solana's NFT infrastructure discovered that NFTs are not a distinct asset type but simply tokens configured with specific properties, including a supply of one, zero decimals, and revoked mint authority. Metadata stored on-chain gives each NFT its identity, covering details like name, description, and image. Historically, most Solana NFT projects relied on Metaplex, an open-source protocol that standardized metadata and collection management. Solana's newer Token Extensions now allow developers to embed metadata, collection grouping, and custom business logic directly into the token without depending on external frameworks. The developer concluded that NFTs have practical uses well beyond digital art, including tickets, memberships, certificates, and gaming assets.

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