Questions tagged [nft]

Questions about NFTs, non-fungible tokens.

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Callable contract's function not exists in ABI

I want to programmatically mint a NFT on Sea Drop on OpenSea. Here is a sample contract that I deployed to test out mint function Sepolia Etherscan Here is the mint page OpenSea If I switch to Write ...
duyanhhz's user avatar
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Token Transfer in the absence of _isApprovedOrOwner

I have created a smart contract in which I have a method called forSale used to store a flag (in a struct part of a mapping) indicating that the owner of an ERC721 token wishes to sell his said token (...
JF0001's user avatar
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How to get unstoppable domain owned by wallet address?

How to get unstoppable domain owned by user wallet address? I need to obtain all domains that user have. Preferred language js, please tell me what tool will help me
Hahan't's user avatar
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"Getting 'Promise { <pending> }' Response When Deploying Smart Contract Using Hardhat - How to Resolve?"

I'm encountering difficulties deploying a smart contract using Hardhat. In my deployment script, I'm using ethers.getContractFactory().deploy() to deploy the BinaryvilleRobotsNFT contract. However, ...
varun_63's user avatar
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The "transfer NFT" function works smoothly on occasions, yet occasionally fails with transactions being reverted to their initial state

I am using OpenZeppelin for minting and transfering the nft's.I tried increasing the gas fee but the transaction just gets stuck . Using etherJs for interacting with the contract Code For this :- ...
Shreyas Keni's user avatar
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Polygonscan NFT inventory indexing is not working properly

There is an ERC-1155 NFT contract deployed to Polygon Mainnet network: 0x057287DF57b9e0E45c250e8fA44115A11DD9E451 Currently, well over 350 unique NFTs have been minted on this smart contract. However, ...
Alexander's user avatar
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Pinata pinList API Fetching Unpinned Images and Files

I am encountering an issue with Pinata's API (https://api.pinata.cloud/data/pinList) where despite unpining several images and files from my Pinata Cloud account, the API continues to fetch the ...
Umar Raza's user avatar
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Foundry ERC721A NFT MerkleTree Whitelist Mint Test: Prank won't change the msg.sender? DefaultSender doesn't change?

this is my first post here. error (see how the prank "...cb2", is not setting the msg.sender?) I am making a Solidity NFT Whitelist mint project using Merkle Tree hashing. I generate Merkle ...
turnwol7's user avatar
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2 answers
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How can I replace IPFS service with AWS S3 cloud to upload the NFT metadata

I'm using IPFS as a decentralized storage to store metadata for NFTs, which users set manually on the frontend by filling out a form. The metadata contains images, PDFs, and the name and description ...
David Jay's user avatar
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how to convert svg string to hex ( onchain nft traits )

I've tried doing string to base64 to hex still not working any thoughts how to get this conversion? "...
Clint's user avatar
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How to bring and display minted NFT image (ERC-721) in polygon Mumbai testnet. Attached the screenshot

In polygon testnet we are trying to bring minted NFT image in the image section, is there are any possibility to bring them, please let us know how to do that.
Prabhakaran Rajagopal's user avatar
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not approving of nft token from a smart contract to another smart contract

I got an error while running my nft lottery contract while starting the function start() it shows error. VM40:1 MetaMask - RPC Error: execution reverted: ERC721: approve caller is not owner nor ...
DEBASIS DASH's user avatar
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How to call erc721 functions (approve, setApprovalForAll etc.) from another contract?

I have an erc721 NFT and a Main contract. The Main Contract is a factory contract. Which creates erc 721 contracts. I can create NFT contract from Main contract . But can't call the approve, ...
Asir Shahriar Roudra's user avatar
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How do projects create huge NFT collections?

Working with ERC20 is simple, but when it comes to NFTs, how can I manage bigger collections? For example I wanna launch a collection of 2k NFTs. The problems are: To upload the 2k images (This is ...
Solidity Nerd's user avatar
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ERC721 Transfer Event in Constructor

I thought that when you mint an ERC721 Token in the Constructor of your smart-contract it will not emit the Transfer event. I'm thinking this cause of what's written in the official ERC721 EIP ...
Mark55's user avatar
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How NFT marketplaces detect NFTs metadata updated?

I have learned ERC-4906 to notify updating metadata. I found out the way to detect some NFTs metadata updated, but I don't know how marketplace detect tremendous NFTs metadata updated. Please let me ...
ttt's user avatar
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Opeansea does not preview gltf animations of gltf files stored in ipfs

In theory opeansea supports gltf and gtb files using the animation_url in json file. However they don't render the animation and just display the text of the the gltf file and does not render it (see ...
Iván's user avatar
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How does ens.domains generate unique NFT images with the ens domain name on it at purchase?

How does ens.domains generate unique NFT images with the ens domain name on it at purchase? What I mean is: So when you find and purchase your ens domain on ens.domain, after purchase you're instantly ...
jiamijiang's user avatar
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Can I complete a transaction some unspecified time after signature?

I want to: User signs and gives needed permissions X time passes, an if statement in a code loop triggers A specified NFT is listed for sale using open-sea API Since this code will run through the ...
Shrey Birmiwal's user avatar
1 vote
1 answer
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How do i read sales here?

I've been trying to read the sales in this transaction. Tried to read "Execution721MakerFeePacked" event But could not understand anything from it. Tried seeing what NFTs got transferred and ...
Ladybug's user avatar
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How can I design smart contracts for p2p vehicle trading?

The idea is to have two contracts: OrderManager Contract NFTMinting Contract OrderManager will manage the funds transfer for the vehicle; buyer will deposit the funds, the seller will withdraw them; ...
Geek's user avatar
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What makes an NFT non-fungible?

According to the provisions of ERC721 Contract; when minting an NFT collection we can set the maxSupply of tokens for that particular Asset/NFT say a particular Artwork. And everytime someone mints an ...
Geek's user avatar
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Seeking Smart Contract for Certifying Physical Artworks Similar to Kronos360

I'm looking for a smart contract that can certify physical artworks, similar to Kronos360's approach for watches. The contract should mint a unique token for each artwork, linked to its image and ...
YoannR's user avatar
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How do people solve NFT cross-chain when developing on your own rollup?

This is a question about developing a game using its own side-chain. In this case, the NFTs would be minted on the side chain. Now the players can trade NFTs with each other but some of them might ...
Justin Zhang's user avatar
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2 answers
37 views

How two different functions name can have same function signature?

This is the below code cast sig "workMyDirefulOwner(uint256,uint256)" 0xa9059cbb ...
MD AZAD's user avatar
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How to generate new Breed NFT Image?

How do I use two NFT images to create a new NFT through breeding? I'm a bit confused about this. I've used different attributes for coverage. now I want to generate the image as well. For example, if ...
Maidi's user avatar
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Possible to get latest NFT from a collection with web3.js?

I want to show the most current NFT from a collection on a website. Is this possible with web3.js? I have a working example how to load all NFTs from a collection which are owned by a certain wallet ...
aronsommer's user avatar
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Alchemy GetNFTsForOwner mint address is null

I'm using GetNFTsForOwner from Alchemy SDK and I expected to get minting information such as mintAddress and transactionHash to linked to my data on my database. But in my result the mint data is null....
Guege Pol's user avatar
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analysing a wallet on a specific contract (web3js/ethers)

is it possible to obtain the transactions of an eth address on a given contract (nft)? at the moment the os API does not allow this, or rather, I would have to iterate over all wallet transactions ...
klok's user avatar
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Testing incrementation in Foundry

Currently testing my smart contract using Foundry and I believe it is going pretty well. However, I have some incrementation going on in my smart contract program which is an NFT Marketplace and I am ...
EGstacking's user avatar
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1 answer
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Testing a node.js script on mainnet

I have a Node.js script that sells 105 NFTs to the highest bid offers. I have tested the script on testnet but to be 100% sure, I also want to test the script on 105 NFTs on the mainnet. But I do not ...
Salman's user avatar
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I'm new to web3 and blockchain development [duplicate]

I'm just starting out in web3 and blockchain technology. Can someone recommend any resources and where to start from
OLAWALE OLALEKE's user avatar
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How to transfer an NFT from my wallet to the user wallet, with automatically signing the transaction in the backend when claim button is clicked?

I have the code, but the issue I am facing is, I'll need the contract ABI and for that I will need the user wallet address, the "To" address where the NFT will be sent. However that is not ...
Coding_templar's user avatar
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Efficient Storage Strategies for ERC721 with Editable Content

I'm just starting to learn about smart contracts, Ethereum and NFTs. It's all new and I need your help with managing editable NFTs. I want to create a NFT with content that is easy to modify while ...
user9541033's user avatar
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Deployment Issues with BasicNFT on Sepolia Network Using Foundry: Mismatched Bytecode and Successful Deployment

While deploying a smart contract using Foundry on the Sepolia test network, I'm encountering an issue. The deployment seems successful, but I'm facing a challenge verifying the contract's bytecode. ...
Aryan's user avatar
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Is it possible to bind a metamask wallet account to my website's own accounts database?

to be specific, we want a user that should first login to our website then after login be able to connect their wallet account. the question is, is it possible to create one account and bind the ...
Snoopy's user avatar
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Opensea nft seller problem

I tried selling my nft on opensea the buyer is clean and am clean, he purchased my nft and then it asked for gas fee payment which wasn’t successful and i messed up since i was new to this and couldn’...
Zinko's user avatar
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DeclarationError: Undeclared identifier. contracts/GorillaNFT.sol:98:5: | 98 | _setTokenURI(tokenId, tokenURI); CAN ANYONE HELP PLZ?

// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/...
Mike's user avatar
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1 answer
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Can't see the metadata for my sepolia nft on opensea's testnet or ehterscan testnet

I'm following a tutorial on how to create an ERC721 contract and I've ran into a problem. I can't see the image for an NFT I've minted on Opensea's testnet. none of the metadata will load after almost ...
Jupiter Express's user avatar
1 vote
0 answers
26 views

Is NFT swap possible on cross chains?

I have done a bit of research on this, and I have found only the same chain NFT swap but I want to know the different chain swapping b/w two users, Please provide some links or guidance to achieve NFT ...
Vinit_2311's user avatar
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26 views

Smart Contract Logic for Dynamic Yield Distribution in ERC-4626-Based Promo Code NFTs

I am implementing a feature an NFT feature NFT promo codes, using ERC-4626 (Tokenized Vault Standard) to create promo code NFTs that accrue yield over time. My question is focused on one specific ...
Crypto Coupons's user avatar
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Can we provide NFT royalties to 2 addresses through Opensea?

I have an NFT collection and want to split the royalty between 2 addresses. After some research, I stumbled upon the contractURI() method where we can add the information like: function contractURI() ...
Shubham Sharma's user avatar
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1 answer
30 views

How to exchange one nft for another from a different contract?

I have 2 ERC1155 contracts, and am looking to transfer nft2 into nft1's wallet upon checking wallet holds nft1, but not sure what I'm doing wrong. This is my nft1 contract: import "./NFT2.sol&...
katslair's user avatar
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1 answer
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Best approach to simplify phantom array logic (ERC721 Enumerable) [HARD]

I wanted to create an ERC721 token vault with arbitrary numbers of NFTs pre-"minted", yet compliant with IERC721Enumerable as a proof-of-concept. For simplicity, the NFT ids are contiguous. ...
Ashraile's user avatar
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How to make a website mint multiple copies of the same NFT?

On OpenSea, I know how to make multiple copies of the same NFT (you just make the set number larger). However I don’t want to use OpenSea, because I want a minting website, where users can mint their ...
Please Help's user avatar
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How to fix `str is undefined` nft dapp upload picture problem?

I'm trying to do an example in a tutorial, I tried to run this, but I get an error that "Upload errorTypeError: str is undefined". How can I solve this? I tried: -> deleting artifacts and ...
Kayhan's user avatar
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NFT-Marketplace-Tutorial

I try to do example this tutorial. I run succesfully this. But I take error that "Upload errorTypeError: str is undefined". How can ı solve his? I did before: -> I deleted artifacts the ı ...
Kayhan's user avatar
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Is Making an NFT on Binance Smart Chain on Remix currently possible? (compiler versions problem)

I'm trying to make a basic imageless NFT for Binance Smart Chain using remix.ethereum.org (for NFT identity verification purposes) but I've encountered a problem. Basically solidity version 0.8.2 or ...
Adjam's user avatar
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ETH stuck in Polygon (Matic): Bridge smart contract

I was trying to make an NFT purchase on OpenSea and somehow I managed to send ETH to a "Polygon (Matic): Bridge" smart contract but didn't get the NFT I was expecting in exchange. Now I don'...
johnwolf1987's user avatar
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38 views

Unable to view image from ipfs link

I am trying to make dapp in which someone will upload an image and then the dapp will mint an nft for that image and then show the image. But I am running into a problem. The dapp is generating a ipfs ...
Samarth Bagga's user avatar

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