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Metadata Basics

NFT Metadata
NFT Metadata is represented as JSON objects which are made public. There are two types of metadata used by crypto contracts:
Contract: Holds information about the contract/collection
Token: Holds information about an individual token
Contract Metadata
Contract metadata tells marketplaces such as OpenSea about your collection including it's name, description and image. The following is an example of contract metadata:
{
    "name": "Enlightenment V4",
    "description": "This collection was created as a demo to showcase the HyperMint app and client sdk. All information for this page is coming from the network via the sdk to show what is possible.",
    "image": "https://demo.hypermint.com/nfts/images/logo.jpg",
    "external_url": "https://hypermint.com",
    "seller_fee_basis_points": 100,
    "fee_recipient": "0x894BEE1735cCd4AbC811e30645cd981938B39f18"
}
Where
name is the name of the collection
description gives information about the collection
image is the main image shown on marketplaces
external_url links to your collection website
seller_fee_basis_points the percentage that will be paid on secondary sales (should match your account page)
fee_recipient where the secondary sales fees will be paid (should match the secondary sales wallet on your account page)
Here's an example of how this metadata shows up on OpenSea.
Token Metadata
Token metadata describes an individual token. It contains similar properties to contract metadata as well as configurable attributes. The following is an example of token metadata:
{
    "name": "Party Time",
    "description": "The lamps decided to have a party...it was pretty lit",
    "image": "https://demo.hypermint.com/nfts/images/3.jpg",
    "external_url": "https://hypermint.com"
}
Where
name is the name of the token
description gives information about the token
image is the main image shown on marketplaces
external_url links to more information about your token
As well as the above, additional properties such as attributes and multi-media files can be associated with the token. More information can be found here: https://docs.opensea.io/docs/metadata-standards​

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Token Management
Creating Your NFTs
Last modified 3d ago