NFT image doesn't show up

[leobel]

I've minted a NFT using an address from Nami Wallet but token image doesn't show up. Here is the tx on testnet: https://explorer.cardano-testnet.iohkdev.io/en/transaction?id=4c8c7a8fa2f7ab013e13d523800b76bb12c93868dfc676d7e29ac3efb6edc14d where you can see the metadata

{
  "version": "1.0",
  "c053203b3daf86b6588640436792dc5fc156f5b964b0c633a8f38c95": {
    "TANGOCRAZY01": {
      "body": "Rounded",
      "eyes": "<eyes>",
      "face": "<face>",
      "name": "Tangocrypto TANGOCRAZY01",
      "pepe": "grillo",
      "color": "Blue",
      "image": "ipfs://QmaQPBSXuRRcJkCMV9vbJ2gX9wwX2mye7GsSEbQjZnp6Rs",
      "artist": "Tangocrypto",
      "rarity": "1",
      "twitter": "https://twitter.com/tango_crypto",
      "accessory": "None",
      "copyright": "Tangocrypto 2021",
      "mediaType": "png",
      "collection": "Tangocrypto Collection",
      "description": "Description for TANGOCRAZY01"
    }
  }
}

I've tried it on ccvault wallet (I just send the token)

[leobel]

After some further tests I think the issue is Nami wallet isn't showing the image if the asset_name is different from the name . I don't know if this is a bug or a business decision from Nami

[alessandrokonrad]

The actual assetName is 54616e676f63727970746f2054414e474f4352415a593031, but you use in the metadata the assetName TANGOCRAZY01. These names have to match. Actually blockfrost is resolving that and nami just fetches token metadata from there.

[leobel]

Hi @alessandrokonrad when you say: "These names have to match" you mean the asset_name and the inner name right? I think it doesn't matter if they are UTF-8 or Hex encoded, they just need to match. If I use TANGOCRAZY01 in both it works. At the end it seems a bug since I don't see any reason why they must match did you?

[alessandrokonrad]

"These names have to match" you mean the asset_name and the inner name right?

Yes exactly. They need to have the same encoding, however the problem is that in CIP-0025 I never specified what encoding should be used for the the inner assetName. Most projects went with utf-8 per default. Hex would be more universal of course, but blockfrost is converting the assetName to utf-8 and looks up the assetName in the metadata map.

[tinglycraniumplacidly]

Hi. We've tried uploading cNFT collections with metadata where the asset_name = name, and also where it doesn't. The metadata and/or the gif images themselves don't seem to make any difference.

I believe the issue is with the ipfs mirror that nami uses. For example, https://ipfs.blockfrost.dev/ipfs/QmWNiyZ3fE4UPGCnxyspkr4n46xjwWMdEkvUkeAhMiMPAa 504's

whereas these https://gw3.easy-ipfs.com/ipfs/QmWNiyZ3fE4UPGCnxyspkr4n46xjwWMdEkvUkeAhMiMPAa https://ipfs.io/ipfs//QmWNiyZ3fE4UPGCnxyspkr4n46xjwWMdEkvUkeAhMiMPAa work

We noticed that about half the assets in a given collection will 504 with the blockfrost.dev links. The other two mirrors work 100% of the time for all gifs without fail.