Questions tagged [meta-data]

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ERC-721 metadata doesn't show up for rinkeby but does show up for mumbai?

This is not rendering despite .tokenURI() returning the correct JSON blob. URI Argument: let metadata = { "description": "Tester", "image": "https://upload....
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Metadata Not Loading

Hi so I was doing one of the tasks for Alchemy's RoadToWeb3 and my metadata is not loading, even though I checked my json and solidity, which is all working fine. I have been waiting for the past 6 ...
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How to upload large amounts of data to IPFS

I'm trying to upload a 30.4 GB folder via Pinata service. The problem is that Pinata has a limit of 25 GB per download (I have bought Picnic plan for 50 GB). Tried the free service NFT Storage(The ...
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Tiered Membership NFT using onchain or off chain metadata

I'm building a tiered membership nft contract for a DAO. What would be the best practice regarding the metadata: onchain or off chain? The biggest disadvantage of putting it on chain would be the ...
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Metadata not showing up in opensea testnet

I have encountered a very annoying problem for me. OpenSea and LooksRare (testnets) don't want to display my nft metadata. I'll attach pictures below. Contract constructor: Deploy script: Metadata: ...
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Can I delete, change or add a new metadata?

Suppose I have uploaded metadata + images to IPFS through pinata. Next, I deploy an ERC-721 contract and paste a token URL. The main question is: can I change, delete or add metadata
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Can the supply number of a decentralised immutable ERC-115 token still be modified?

I have minted four 1/1 ERC-115 NFTs on OpenSea, and want to freeze them, sending their metadata to IPFS, in order to 'decentralise' their metadata. I would have preferred to mint these 1/1 NFTs as ERC-...
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1 answer
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Is it possible to write protect an IPFS base url?

Imaging you have an ERC721 contract with an infinite max supply. Usually, the metadata IPFS url will be the base url concatenated with the token ID: ipfs://[base-url]/[token-id]. Say we are up to ...
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How do I download an entire NFT collection, including metadata

I want to download an entire collection, including the metadata. Any help would be appreciated.
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How to Use 2 NFTS metadata to create a new NFT (Breed) with Metadata JSON that they choose from the 2 NFTs

How to Use 2 NFTS metadata to create a new NFT (Breed) with Metadata JSON that they choose from the 2 NFTs.
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How to upload NFT Metadata of multiple images after you get base-URI of folder using coding instead of manually doing it?

How to upload NFT Metadata of multiple images after you get base-URI of folder using coding instead of manually doing it ? So, After I upload my Image through Pinata/IPFS, I get a Base-URI. Now I want ...
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Upload metadata as JSON to IPFS

I am uploading NFT-metadata files to the IPFS using Pinata-API and axios: var metadata = { "title": "Asset Metadata", "type": "object", &...
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Why metadata is not valid "token_uri": null

I've been testing a smart contract using remix with validated metadata that I have used in one of the NFT smart contracts that I deployed on mainnet and everything worked well, but this time when used ...
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Is it a problem If I keep my nft meta data ipfs link public?

So I have deployed a nft smart contract. And I kept my ipfs metadata address public. Is it a major issue? Should I verify my samart contract?
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how can I put a URL in the image section of the metadata?

I have this sandbox character(https://www.sandbox.game/model-viewer-light/?assetId=9894bf84-cc8e-455b-a4aa-e3a3f2955045), and I want to create an nft meatdata and use this link for the image part ...
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What's the proper way to update your metadata?

I'm trying to build NFT game where I'm going to upgrade NFTs attributes based on in-game activity achievements, I've googled around, but couldn't find a solution, so my question is how can I make ...
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ERC721 Contract: Adding Contract Level Metadata?

I am trying to implement contract level metadata so "description", "image", external_link": etc show up on marketplaces, particularly OpenSea. I have done an extensive search ...
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What's the most efficient way to generate metadata for lots of non-generative NFTs?

I know that there are tutorials to generate metadata as part of generative art (i.e. layered art for example using the Hashlips Engine), but what about for art that isn't generated by layering traits ...
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MetaData won't show

I've been trying to deploy this contract for 3 weeks and I just can't seem to get anything to show up on opensea. I can't figure out what i'm doing wrong here. Can anyone assist? https://testnets....
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ERC-721 Solidity Openzeppilin Code Append More NFT Token

I hope I can describe the problem properly. Let's say I have 100 NFT tokens stored in an IPFS storage at some location say, ipfs://abc I have a smart contract ready where I use the constructor to set ...
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What is this CDN in NFT marketplace ? it this the replacement for IPFS.? any leads or links related to the same would be great help

I would like to know what exactly this CDN is? I know that we can deploy and publish the metadata through IPFS. But would like to know the alternatives for it and recently came across this CDN. Since ...
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Help with Metadata not working

I've been playing with trying to mint NFTs partly for my own learning, and partly because I'd like to NFT my company's public memos/docs to make accountability to my investors as easy as pointing to a ...
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How to tell if a transaction is contract creation?

How can one tell if a contract creation took place during a particular transaction? In other words, what is the pattern that I should be looking for? In some cases I have seen the null address being ...
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FreeCodeCamp Solidity Tutorial (youtube): Not getting a metadata file when deploying an NFT

I'm working through Patrick C's freeCodeCamp solidity tutorial. I'm trying to create an NFT with this python script: from brownie import AdvancedCollectible, network from scripts.helpful_scripts ...
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how to synchronize on chain data with off chain data (metadata)

"ethereum network" I am currently trying to build a block chain game. I don't know if I understand the nft and opensea correctly. My understanding is: In a contract I can have list of a ...
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2 answers
582 views

Reveal NFT image/metadata after mint

I would like to adapt my current contract to include a post mint image/metadata reveal feature. i.e. after an NFT is minted I would only then like the image/metadata to be revealed for that particular ...
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1 answer
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Transaction History/ Metada of NFT'S on Etherum blockchain

Currently I am working on project and I want to detect different frauds about NFT's, so I need the transaction history of NFT's and NFT related events. I want to compare different marketplaces and ...
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2 votes
1 answer
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How to Download Metadata for an ERC721 NFT Collection

As the question states, I'm trying to figure out how to best download all the data for an NFT collection, including images and metadata. Is there a good API to achieve this? Any resources would be ...
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Can't see nft as gif in metmask

I am a developer and I created a smart contract for a project that is currently live. the thing is on opensea I can see the gif because I used "animation_url" in the metadata but on metamask,...
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Creating an NFT that is configurable by it's owner

I wish to create an NFT that may have an image that shouldn't be changed, but another field in the metadata should be changed by it's owner. Is that even possible? Thanks..!
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How to provide metadata to smartcontract to implement metadata specific functionalities

I have a NFT collection with 3 different categories. Plants, animals and humans. In the metadata i have put the category of the image but i also know it based on the tokenId (tokenid.json, tokenid.png)...
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Token id increment in name metadata by minting

i have a NFT project that has a hidden n reveal function. When the nft is hidden, i want to have in the name the token id beside the name like "Cool cats #1, cool cats #2, cool cats #3, cool cats ...
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1 answer
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Where is 'uint256[] memory tokenTraits' defined in this NFT contract?

I'm looking into NFT contracts and I am analyzing the infamous CREEPZ INVASION GROUNDS contract. Viewable at https://etherscan.io/address/0xc3503192343eae4b435e4a1211c5d28bf6f6a696#code On line 307 of ...
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1 vote
0 answers
158 views

Extracting metadata from IPFS URI in contract

I have the IPFS URI that contains the metadata of an NFT. I need to access attributes from the metadata inside the smart contract. How would I go about doing that? I've tried using provable api 0.5 ...
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1 vote
1 answer
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There is a way to implement a breed system with a ERC-721 on IPFS?

I'm having a question on how can works a Breed System on ERC-721. What I know I understand well who to make a smart contract with limited supply and how to import all images and metadata to IPFS ...
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ERC1155 with descentralized jsons

Hopefully this has a simple answer: rather how to solve it or the confirmation that it can't be done: When deploying an erc1155 contract, we assign the url at the constructor with the proper standar ...
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1 answer
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Changung the metadata of an NFT i own

Is it possible for me to change the metadata of an nft that i own but am not the creator of? Like can i change the image it is linked to and the attributes along with then freezing the metadata?
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1 vote
1 answer
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How to populate a large amount of data into a mapping of struct

I'm working on a Game into Solidity and I want to be able to populate metadata into my smart contract to be able to access them directly from game-play functions. So I have a basic ERC721 to start: ...
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1 vote
1 answer
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How can I make use of dynamic metadata for tokens?

Let's say I have a contract which has in-contract, evolutive, metadata for NFTs. This means: The image of the NFT can change, subject to the NFT's evolution. The name of the NFT may be changed. The ...
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1 vote
1 answer
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How to avoid user to get metadata from non-minted ERC721 token?

I'm building ERC721 and ERC1155 tokens but I have something I didn't understand.. My Tokens represent characters with attributes, where every attributes have a different rarity. So every character are ...
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1 answer
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Metadata not showing up for ERC-721 OpenSea NFT

I made NFT's, following this tutorial I deployed the smart contract via Remix to my Metamask on the Rinkeby Testnet. OpenSea detected the assets in my wallet after they were minted, but the pictures ...
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I minted an NFT using an interface I created but the media (image) is not showing up on opensea

I minted an NFT. This is the metadata - https://bafybeictwd4bz4aof7gfl7mkdmzdqfgdpwijuvvrun6ytr7sqvgrd6p4oi.ipfs.infura-ipfs.io/ But the image is not showing up on opensea - https://opensea.io/assets/...
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Updatable attributes for ERC721 Tokens without touching to immutable rarity attributes

I'm trying to implement an ERC721 smart contract with some NonFungible token. Some attribute will never change, about "layout/traits" composition, and others will evolve like XP. Immutable ...
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1 vote
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User side metadata reveals for ERC-721 tokens

I'm helping a friend create a project where the project slowly mints and reveals over time. What's the best way to ensure no metadata is leaked? Here's how it'll work user mints a NFT, user calls a ...
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Updated token metadata not refreshing on OpenSea

I've deployed a contract that lets users mint NFTs, which will have a "coming soon" artwork that will then be updated to reveal the real artwork at a later time. This was due to the fact ...
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Capture Token Metadata for Newly Created ERC-721 Contracts

I feel this shouldn't be a super difficult task, but I may be underestimating it. If anyone could put me on the right path to begin, I should be able to take it from there. The part that is confusing ...
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How to get NFT metadata from marketplace

I am looking for something that interacts with an NFT marketplace.(like https://marketplace.axieinfinity.com/axie/) I want something that will check this NFT marketplace and when it finds one within a ...
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1 answer
148 views

How to prove the NFT metadata were written by the issuer?

I would like to ask a question a little bit similar to How exactly can someone prove they were the creator of an NFT? In this scenario, the NFT is already minted. According to the description of the ...
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4 votes
1 answer
2k views

Reveal NFT metadata after buy

We would like to publish our collection on OpenSea, the artwork is done, and would like to do so using Haslips' smart contract. This smart contract already has a similar thing that we are looking for, ...
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1 vote
0 answers
104 views

Two metadata hashes at the end of the bytecoe

doing my own research i saw that the metadata hash is added to the end of the bytecode and i can extract and decode it with cbor. I know that we can identify them by different ways, in this case with ...
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