Paras Documentation v2
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NFT Metadata
On-chain metadata
We support the `TokenMetadata` from NEP-177 version 1.0.0 [1]
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type TokenMetadata = {
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title: string|null, // ex. "Arch Nemesis: Mail Carrier" or "Parcel #5055"
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description: string|null, // free-form description
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media: string|null, // URL to associated media, preferably to decentralized, content-addressed storage
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media_hash: string|null, // Base64-encoded sha256 hash of content referenced by the `media` field. Required if `media` is included.
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copies: number|null, // number of copies of this set of metadata in existence when token was minted.
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issued_at: string|null, // When token was issued or minted, Unix epoch in milliseconds
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expires_at: string|null, // When token expires, Unix epoch in milliseconds
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starts_at: string|null, // When token starts being valid, Unix epoch in milliseconds
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updated_at: string|null, // When token was last updated, Unix epoch in milliseconds
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extra: string|null, // anything extra the NFT wants to store on-chain. Can be stringified JSON.
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reference: string|null, // URL to an off-chain JSON file with more info.
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reference_hash: string|null // Base64-encoded sha256 hash of JSON from reference field. Required if `reference` is included.
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}
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Description of the metadata that will show up on Paras
title: The name of this NFTdescription: A longer description of the token.media: URL to associated media. Preferably to decentralized, content-addressed storage. If you havebase_urion your contract metadata, it will be prepended tomedia.copies: The number of tokens with this set of metadata ormediaknown to exist at the time of minting. This will be shown on Paras ascopiesextra: anything extra the NFT wants to store on-chain. Can be stringified JSON. You can putattributeshere which will be explained later.reference: URL to an off-chain JSON file with more info. You can put more info or anything from on-chain metadata to be replaced with the ones onreference
Non-standard metadata
You can put the non-standard metadata as on-chain
extra or inside JSON file in reference.Attributes
Attributes that will be shown on each NFT, e.g.
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{
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"attributes": [
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{
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"trait_type": "Base",
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"value": "Starfish"
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},
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{
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"trait_type": "Eyes",
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"value": "Big"
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},
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{
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"trait_type": "lvl",
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"value": 1
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}
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]
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}
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Animation URL
animation_url: URL to multimedia attachment. If you havebase_urion your contract metadata, it will be prepended toanimation_url. We useanimation_urlfor the newly supported audio NFTs with .MP3, .AAC, and .WAV formats.
Collection Info (only if you are using shared NFT contract)
If you are using
x.paras.near or paras-token-v1.testnet you need to put these inside the reference JSON. You need to create a collection first using Paras UI or API.collection: collection name, e.g. "Genesis"collection_id: collection id, e.g. "genesis-by-parasnear"creator_id: creator NEAR wallet address, e.g. "paras.near"
Last modified 1mo ago