Questions tagged [meta-data]
The meta-data tag has no usage guidance.
69
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76
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NFT metadata for property ownership ERC721 token
Hey everyone
I'm new to NFT development and I'm trying to develop a simple property ownership and marketplace using the ERC721 token standard. since I'm so unfamiliar with json I have some problems ...
- 21
1
vote
1
answer
85
views
Returning new {id}.json URI after setting a new URI in ERC1155
I understand that for OpenSea to read our metadata JSON file, we need the function below.
function uri(uint256 _tokenid) override public pure returns (string memory) {
return string(
abi....
- 83
0
votes
0
answers
21
views
Do ERC721 BatchMetadataUpdate token ranges have to be consecutive token ID numbers?
I am implementing a ERC721 contract with NFT metadata on-chain and will have a function that can update the metadata if needed. Therefore I would like to emit the BatchMetadataUpdate event after this ...
- 15
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42
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ERC721 Smart Contract: Best Strategy for Handling Token Metadata when Minting Partially with IPFS Storage
I would like to create a ERC721 contract for a situation in which I don't have all the tokens ready upfront. Let say I would like to mint 100 tokens but I have only 10 at the moment of deploying the ...
- 181
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0
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25
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Restoring MetaMask wallet on new laptop
I bought a new laptop and was intending to install Metamask on it. Some background, I have my 12-seed recovery phrase, I know my password, and have ever only had 1 account ever. When installing I use ...
0
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1
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76
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Can Opensea pull and read standard metadata URI from ERC1155 NFT?
For example https://token-cdn-domain/{id}.json. Can Opensea and other similar clients read this kind of metadata link? Or I should override the uri() function like this
function uri(uint256 _tokenId) ...
- 33
1
vote
1
answer
129
views
Is there a tool to verify that the metadata of my NFT is correct?
I am creating a collection of NFTs and I want to test that the metadata and the media files are correct. I am setting tokenURI on chain. How can I do this? I am using Polygon Mumbai.
- 683
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1
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13
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Is there a problem with Pinata Discord Server?
I want to access their server but I am not able to do it. The link they have on their website keeps failing: https://discord.com/invite/pinata.
Does anybody have a valid invite I can use?
- 683
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0
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68
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IPFS Node: when should I run my own node vs. using a third party service like Pinata?
I work for a gaming company and we will be managing thousands of in-game assets for our titles. This means we will need to store both the media and the metadata in IPFS for immutability. Each metadata ...
- 683
1
vote
1
answer
70
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What is the best option for mutable NFTs (ERC721 or ERC1155)?
I am researching on the best option to have mutable metadata for NFTs (ERC721 and ERC1155).
What is the best option? Is anybody already using any approach to this?
Tableland has just come to my ...
- 683
1
vote
1
answer
43
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Why is ERC-5185 in "Stagnant" status?
I work for a gaming company and we are looking for options to managing mutable metadata for in-game assets.
I would like to use ERC-5185 to implement this.
Does anybody know why it is in that status? ...
- 683
2
votes
1
answer
869
views
My NFT image doesn't appear on etherscan
I've created a simple ERC721 contract and minted some NFTs, as I mint the images are visible on opensea but not on etherscan.
here is my contract, https://goerli.etherscan.io/address/...
0
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1
answer
51
views
Missing Metadata Files
When uploading the metadata & images to IPFS, some files(json) and images (png) were deleted from the initial file upload due to poor art output.
Example: 100 NFTs
Deleted: 3, 17, 88
Uploaded: 97 ...
2
votes
2
answers
261
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using image_data for opensea's metadata instead of image
I understand it is not recommended, but I was curious about including the code for an SVG in image_data which would replace image per opensea's metadata standards page. This:
{
"description&...
- 282
1
vote
1
answer
170
views
Decreasing size of the images, fetched from IPFS, before rendering
In my project, there is a section where dozens of NFTCards get rendered, including NFT's pictures and other information. Since the quality of those images is high and their sizes are usually too large ...
- 382
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49
views
How does explorer get tokenURI?
Is there a standard method that blockchain explorers will retrieve tokenURI?
the only potential thing I found in a limited search was _baseURI function I'm currently using function tokenURI(uint256 ...
- 85
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1
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1k
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my nft image not showing in opensea testnet
when ever i mint an nft with my frontend dapp and check it on opensea i will just see the name without the nft image.
here is my deploy.js file. this is the tutorial i am following https://dev.to/...
1
vote
2
answers
432
views
Metadata isnt showing for opensea
Hey so I'm new to nft dev and decided I'll give it a try. I'm following the Hashlips NFT tutorial however it seems I am not getting the same results as him.
For some reason the "hidden"/&...
- 131
0
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0
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60
views
Editing TokenURI/BaseURI for User Metadata Change
I am doing some research into editable metadata. In my case, this is as simple as having a second URI string and allowing it to be toggled between two possibilities based on a mapping value. If I was ...
0
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1
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71
views
How to setup metadata on IPFS for newly generated metadata?
I've been studying on how devs usually go about handling the metadata for NFT collections and from what I've seen, this reply on this post sums up the whole process:
Best way to set metadata in ERC721 ...
- 1
0
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2
answers
104
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search NFT collection by name
i am new to this world of web3.
I scrapped opensea.io TOP NFT collections in mongo and now I want to know is there any web3 method that takes NFT name only and returns metadata.
My collection in ...
0
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1
answer
370
views
How to read ERC-1155 NFT metadata without 'uri()' method implemented
I need to read an ERC-1155 NFT token metadata.
The smart contract code does not implement the 'uri()' method.
How can we retrieve it's metadata, or at least the metadata's url/URI?
The smart contract ...
1
vote
1
answer
276
views
How to create many ERC721 tokens sharing the same metadata tokenURI but different TokenId?
I'm actually trying to create an NFT Marketplace, where a user can upload his NFT (create/mint new NFT) and other users can give some Ether and mint the same NFT. Trying to achieve this with the ...
- 431
1
vote
1
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29
views
How does Ethereum / the EVM know not to execute metadata/auxdata?
I have a contract as such:
// SPDX-License-Identifier: MIT
pragma solidity 0.8.15;
contract SSimpleStorage {
uint256 storedNumber;
function storeNumber(uint256 newNumber) external {
...
- 10.5k
0
votes
1
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221
views
How to decode and update input data of a specific transaction?
So, I've decoded the input-data and fetched it via block-hash, Now what I want to do is that, I want to update the input data and post that updated input data back to the same transaction of the same ...
1
vote
0
answers
36
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does opensea treats differently ERC721 and ERC721URIStorage? What about using pinata vs custom IPFS server?
I developed a contract and uploaded it to the polygon chain. I wanted to use my own IPFS node to be as "decentralized as possible", so I used URIStorage. It costs more gas but because in ...
1
vote
2
answers
66
views
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....
- 608
0
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0
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286
views
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:
...
2
votes
2
answers
4k
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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
1
vote
1
answer
200
views
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 ...
- 265
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2
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2k
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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.
- 1
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1
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194
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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.
0
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1
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438
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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 ...
1
vote
1
answer
915
views
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",
&...
- 51
2
votes
3
answers
772
views
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 ...
- 301
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1
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27
views
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?
- 163
0
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1
answer
977
views
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 ...
- 1
0
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0
answers
133
views
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 ...
0
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1
answer
167
views
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 ...
0
votes
0
answers
243
views
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 ...
1
vote
1
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681
views
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 ...
- 145
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3
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979
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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 ...
0
votes
1
answer
57
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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
791
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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 ...
- 21
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1
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198
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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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0
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244
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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 ...
- 31
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124
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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 ...
- 194
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1
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56
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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?
- 1
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1
answer
532
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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:
...
- 194
2
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1
answer
1k
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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 ...
- 200