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The following piece of crypto art has a title, description, and additional details regarding file and image size, provided by the NFT platform (Makersplace) where the artist (Lumi) minted the NFT for the image.

How can I view the URL link to the associated image file as it appears within the metadata/code of the NFT itself? and get technical details such as whether the NFT is an ERC-721 or ERC-1155 token?

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I can't find that particular piece in their contracts, but the below applies to the 2 of 10 edition.

How can I view the URL link to the associated image file as it appears within the metadata/code of the NFT itself?

The 2 of 10 edition is here.

From that we see their contract - MakersTokenV2 - is at 0x2a46f2ffd99e19a89476e2f62270e0a35bbf0756.

You can use Etherscan to read data from the contract here.

The token ID is 42497, which we can use with the tokenURI() method from that Etherscan page, to get the following as the location of the artwork's metadata (not the artwork itself):

ipfs://ipfs/QmdNvqCbd7qYvtyFJdd3zoJC84cvyCiSxYDfsiYYQZVCec

Which is an IPFS path. To view it through a browser requires you to use a gateway:

https://ipfs.io/ipfs/QmdNvqCbd7qYvtyFJdd3zoJC84cvyCiSxYDfsiYYQZVCec

From there we can see the image's metadata, which includes the actual location of the art:

{
  title: 'Trajectory',
  name: 'Trajectory',
  type: 'object',
  imageUrl:
    'https://ipfsgateway.makersplace.com/ipfs/QmNopeEan1r728EGpAYZw8fFvCXfuXtnadC3JCeY5mo9LB',
  description: 'Created by artist ThinkLumi',
  attributes: [
    {
      trait_type: 'Creator',
      value: 'Think Lumi',
    },
  ],
  properties: {
    name: {
      type: 'string',
      description: 'Trajectory',
    },
    description: {
      type: 'string',
      description: 'Created by artist ThinkLumi',
    },
    preview_media_file: {
      type: 'string',
      description:
        'https://ipfsgateway.makersplace.com/ipfs/QmNopeEan1r728EGpAYZw8fFvCXfuXtnadC3JCeY5mo9LB',
    },
    preview_media_file_type: {
      type: 'string',
      description: 'jpg',
    },
    created_at: {
      type: 'datetime',
      description: '2020-05-06T18:24:35.578285+00:00',
    },
    total_supply: {
      type: 'int',
      description: 10,
    },
    digital_media_signature_type: {
      type: 'string',
      description: 'SHA-256',
    },
    digital_media_signature: {
      type: 'string',
      description:
        '72fd9dc05cc5b630c28d749eb56dc4f99173e6769556f7ac10c8204dd1de8721',
    },
  },
}
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  • does any of the metadata indicate the NFT being an ERC-721 or ERC-1155? – user610620 Feb 28 at 20:09
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    It doesn't, but their FAQ says that everything is ERC-721 -> makersplace.com/faq. See the "Non-fungible tokens" section. – Richard Horrocks Feb 28 at 20:11
  • based on the field imageUrl, if https://ipfsgateway.makersplace.com/ipfs/ is taken down, being merely a web gateway to the actual IPFS location of the art, then the link to the crypto art will cease to exist, even though it's still up on IPFS? – user610620 Feb 28 at 21:28
  • That appears to be their own IPFS gateway, meaning they must be running their own IPFS node. If that gets taken down then the art will still exist in IPFS, like you say. But that particular link won't correctly resolve. The IPFS hash part of the link could still be used as an identifier though (QmNopeEan1r728EGpAYZw8fFvCXfuXtnadC3JCeY5mo9LB) – Richard Horrocks Feb 28 at 21:49
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    (And any service displaying the art could scrape that identifier from the metadata and run it through a different gateway.) – Richard Horrocks Feb 28 at 21:49

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