Un NFT It's like a single digital token that says that you are the owner of something special: an image, a song, a video game character or even virtual terrain. Unlike digital currencies (which are all worth the same), NFTs They are different from each other, and that is why they can represent unique things.

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Un NFT (Non-Fungible Token) It is a type of unique and unrepeatable digital asset which is issued on a blockchain through smart contracts. Unlike the fungible tokens (such as ERC-20), which are interchangeable and homogeneous, each NFT has a unique identifier (TokenID) and specific metadata that differentiate it from the rest, allowing represent the ownership and authenticity of digital or physical assets.

NFTs are built on non-fungible tokenization standards, the most common are:

• ERC-721: base standard for individual and indivisible NFTs.
• ERC-1155: allows you to manage both fungible and non-fungible tokens in a single contract (ideal for video games and multiple collections).

Each NFT targets a series of metadata (usually in JSON format), which contain information such as:

• Name and description of the asset.
• Link to the image, video or file (stored on IPFS, Arweave or centralized server).
• Unique attributes (color, rarity, level, etc.).
• History of ownership and transfers.

NFTs are used in numerous use cases:

• Digital art and collectibles (e.g. images, illustrations, photography, music).
• Gaming and metaverses (skins, characters, virtual lands).
• Documentation and digital identity (certificates, tickets, diplomas).
• Fractional ownership of real assets (buildings, physical objects).
• Intellectual Property Tokenization and User Licenses.

One of the key characteristics of the NFT is that its existence on the blockchain guarantees:

• Verifiable shortage.
• Demonstrable authenticity.
• Transferable property without intermediaries.
• Interoperability between standards-compatible platforms and markets.

However, it is important to note that the NFT It does not store the content, but a pointer to it. Therefore, its legal and functional value may depend on how the contract is structured, the hosting of the metadata and the related rights.

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