Metadata Standards

NFT Standards on Hedera are important to ensure display across the many marketplaces and wallets in the ecosystem.

HashPack authored HIP-412 in order to formalize these standards - it is recommended that anyone minting NFTs adheres to these standards.

The basic metadata is as follows:

{
    "name": "NFT Name",
    "creator": "Creator Name",
    "description": "Human readable description of the asset - RECOMMENDED",
    "image": "cid or path to the NFT's image file, or for non-image NFTs, a preview image for display in wallets - REQUIRED",
    "type": "mime type - ie image/jpeg - REQUIRED",
    "files": [ // object array that contains uri, type and metadata - can contain multiple files
        {
            "uri": "cid or uri to file - REQUIRED",
            "is_default_file": "(Type: boolean) indicates if the file is the main file for this NFT - OPTIONAL",
            "type": "mime type - REQUIRED"
        }
    ],
    "properties": {
        // arbitrary json objects that cover the overarching properties of the token
    }
}