Questions tagged [nft]

Questions about NFTs, non-fungible tokens.

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What does ERC1155 have to do with Opensea (and other NFT marketplaces') "gas free minting"?

I have been trying to figure out how ERC1155 "helps" with NFT marketplaces like Opensea and Rarible implement "gas free minting". Here's an excerpt from Opensea's blog: NFTs made ...
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Please look at my first contract [closed]

I hope you're all okay. I'm an ex-advertiser looking to learn a new profession, and i chose blockchain programming. I confess that things stil look confused, but i am learning. My fisrt project will ...
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How to bulk upload NFTs to an existing collection?

I'm planning to create a new collection contains 10000 NFTs using Remix.ethereum with smart contract. I would like to upload 1000 NFTs for the first time, then upload another 1000 NFTs a month later ...
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How does EIP-2891 handle royalties?

I want to add secondary royalties to my smart contract for OpenSea and Rarible and also have royalties for the artist after every mint. I've been reading up on royalties implementations, specifically ...
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Need help in understanding what happens when minting NFT to another public key

I am new to developing on Ethereum, so I hope these questions aren't too dumb. I have a smart contract that allows me to mint an NFT to another public key. Who is the owner of this NFT - me, or the ...
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How can Opensea and Etherscan understand that CryptoPunks are NFTs if the contract does not implement ERC20, ERC721 nor ERC1155?

I just noticed that the CryptoPunks contract does not implement any ERC standard, however it is properly parsed by third-party platforms such as Opensea and Etherscan, were they can understand these ...
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Make msg.sender to remain constant in solidity nested contracts

I have three different contracts. One is a simple contract (ContractA), second is my token contract and the third one is ERC20 Token contract which is inherited in my token contract. So when I make a ...
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How does Metamask revert/cancel minting transactions?

I unfortunately wasn’t able to find any information on this, neither on Metamask's community forums nor anywhere else online. I’m wondering how minting transactions are cancelled through Metamask or ...
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How difficult and what should I Google to create an App that allows one person to transfer a NFT to another person?

If I wanted to create a super simple app that would allow one person to transfer an NFT to another person, what things should I consider/Google and how difficult would that be? Obviously the biggest ...
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How to add ERC1155 to this Smart Contract

so I have two smart contracts and I want to add erc1155 functionalities this is the first one: 1; name: NFT.sol // SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@openzeppelin/...
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Error occurred while pinning file to IPFS: Error: Request failed with status code 403

I've deployed smart contract for nft , I'm using pinata to store my nft asset but it shows an error of Error occurred while pinning file to IPFS: Error: Request failed with status code 403. I've ...
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Creating an Automatic NFT trader

(Apologies for keeping the questions so broad but not sure of the starting point at this stage) Hi All, I am trying to build an automatic NFT trader where a smart contract will buy the NFT from ...
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How could I have a custom, stored in database currency be a requirement to call a smart contract function for my NFT Game?

Im currently developing an NFT Game, where our idea is to have a custom currency that is stored in the database and serves to buy some items(stored in database aswell), and to breed the NFTs, how can ...
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How to mint 10000 NFT at single or minimum no of transactions on ethereum?

I have to mint 10000 NFTs. But calling mint function 10000 times is not a good idea I guess. Even I created a batchMint function that is calling mint function in loop and it is able to mint multiple ...
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How to use Pinata API with jquery in WordPress

I am a beginner in NFT programming. currently i am trying to write a minter function on my WordPress page to mint an ERC1155 token and then take the selected image for that token and upload it to ...
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Can't resolve 'electron' in '/opt/build/repo/node_modules/swarm-js/node_modules/got'

Repo: https://github.com/vortextemporum/BoringBananasCompany I added Infura node provider to the config.js Deploying to Netlify using yarn build build dir: build It works fine off my ubuntu 20.04 lts ...
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Wouldn't bridging between L1 and L2 result in incongruence when token is burnt on L2 but still exists on L1?

Most bridges between L1 and L2 (let's say between Ethereum and Polygon), particularly with NFT, perform their bridging through the following: From L1 to L2: Hold NFT token in escrow by the bridge on ...
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Examples of checksum/hash used to establish ownership

Are there any examples of one-way hashes or checksums being used in a legal context to establish ownership, creation, or prior art?
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Game token in Solidity ETH

I'm designing a game that will run NFT. In the last few days I've been studying a lot about Solidity and I managed to understand a lot (I even followed the CryptoZombie classes). But I have a big ...
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Can I set fixed gas price to Opensea-js fulfillOrder method

I am trying to use openseajs library's fulfillOrder method to buy NFT token. And I want to adjust the gas price to prioritize my transaction. Below shows how I do this. I pass the tokenId, ...
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Multiple ERC-721 tokens points same uri

This is a question about ERC-721 contract. NFTs needs to be unique to a specific wallet. But in my contract _tokenURIs variable stores IPFS address with tokenIDs. Here is my function function ...
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MIgrate a NFT to IPFS after minting?

Hi I would like to know if it is possible to migrate my NFT from a standard webserver to IPFS after minting it? I already generated and minted my NFTs and now I would like to call the basetokeURI and ...
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Doesn't token metadata used in NFT digital art negate the whole blockchain idea?

I'm new to blockchain/Etherium/NFTs, and I was shocked to learn how NFT tokens that represent digital art are actually implemented. Instead of the blockchain enforcing the integrity of the image data ...
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Query on the NFT Property Replication related EIP Standard / ERC Specification

I am working on an NFT project that requires replication of the original NFT and regeneration of NFT metadata in a sequential and recursive manner. Can somebody recommend the token specification from ...
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When minting NFTs on opensea to the polygon network, is there a way to actually use my own address?

When minting NFTs on https://opensea.io to the polygon network, is there a way to actually use my own address? Even if I have MetaMask connected to the polygon network, it seems that opensea uses its ...
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NFT implementations and interpretation in wallets

I am trying to implement discount vouchers as NFTs and a little confused so far to be honest. I am thinking it should work like this using the contract below: I call function awardDiscountVoucher() ...
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Multiple NFT contract vs Single NFT Contract

I was creating a place where people can launch their NFT projects. But there will be many NFT projects that will be coming in. Is it okay to do just one NFT contract for different artist? Or we need 1:...
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How to filter by a specific ERC721 metadata property?

I'm building a game that uses NFTs for items. There are 5 different item types (weapon, armor, hat, shoe, pet). I store the type of item in json format served in a metadata URL that I save to the ...
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How to set the price of NFT by owner?

I am curious about axie infinity where players can set the price of axie they want to sell/list on marketplace
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26 views

How can I register my NFTs on opensea

I have created ERC721 contract on BSC Mainnet and minted few NFTs, but i don't know how i can see them on opensea, i tried this on rinkeby it worked perfect, I could see all my NFTs there on testnets....
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Minting multiple ERC721 tokens estimating gas cost error

I have a function to mint multiple NFTs in my smart contract (max 10). I have another function to transfer the tokens to the msg.sender. Using hardhat locally, this all works nicely. However on the ...
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Opensea-JS Is it possible to partially fulfill orders?

I'm working with opensea-js. What I want to achieve is to be able to partially fulfil sell orders. Is there a way to partially fulfil an order? For example, if I create a sell order for 100 tokens, ...
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Smart-contract and mint

I would like to create a minting website for NFT. I have a question about implementation. How the IPFS link can be retrieve in order to set the URI parameter? Do you I have to implement a database ...
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How to insert a payable function in an NFT contract

I am creating a contract and I'll like to get paid for my NFT's in an ERC20 token other than Ether. Can someone recommend an implementation? I tried this implementation: function getNft(string memory ...
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Check owner of NFT-Token

I have a smartcontract that generates NFTs. I can check who the owner of a NFT is, because by minting, the sender of the payment can be set to be the owner. address to will be the receiver and owner ...
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IPFS error: failed to enable TCP keepalive

I had an ipfs daemon running, successfully uploaded files and metadata to pinata. I could see/retrieve the data by going to the name.mypinata.cloud/ipfs/etcetcetc. I believe it was pinned. Now I can't ...
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Metamask and fake NFT mint links

I interacted with a fake NFT mint website for a project I was waiting for and was scammed for 0.6 eth out of my metamask. Are the remaining NFTs and funds in my metamask at a risk to transfer out in ...
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How do you interface with a ^0.4.x ERC721 inside of a ^0.7.6 contract?

It seems to me that pre 0.5 NFTs are not compatible with more modern solidity versions. I am trying to use the contract written on ^0.7.6 to call "safeTransferFrom(address,address,uint)" ...
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Bulk buying and selling Ethereum

We have implemented a website where users can register a NFT on the Ethereum blockchain. Now we are thinking about how to integrate the payment system to allow the website user to purchase Ethereum ...
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How do I find transactions on the polygon blockchain that were initiated by a particular Etherium wallet address?

An NFT is created on opensea.io. Using the link on opensea we can inspect the transaction data for the NFT on https://polygonscan.com. Looking at the transaction log on the polygon blockchain we see ...
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How to properly implement a ContractURI for on-chain NFTs

I am trying to implement contract-level metadata for an NFT collection on OpenSea, However, if I do so with the following code, the contract's metadata won't update on the OpenSea collections' page, ...
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How exactly can someone prove they were the creator of an NFT?

On Etherium.org it states with regard to NFTs... https://ethereum.org/en/nft/ You can easily prove you're the creator. How exactly can someone prove they were the creator of an NFT? I am not ...
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Is it possible to mint an NFT directly into another user's Ethereum wallet without their consent?

Is it possible to mint an NFT directly into another user's Ethereum wallet without their consent, and without any proof that a third party actually created it? Does minting the NFT require the wallet'...
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transaction parameter value with Wei is different from Metamask

For example, I set a tParam as value: web3.utils.toWei('0.01','ether'), ... const txHash = await window.ethereum.request({ method: "eth_sendTransaction", params: [tParam], })...
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How do you launch an NFT collection from your own website?

I am wondering how NFT collections are launched on webpages like in these examples: https://www.alienoids.com/ https://www.dinosquad.io/presale https://www.wannapanda.com/ Whilst I'm curious to ...
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Mint 100+ NFT Smart-contract HELP

I am new to writing smart contracts. I am having difficulty mint many NFTs in a single function call. Here is my code mint-nft.js: require('dotenv').config(); const API_URL = process.env.API_URL; ...
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Is it possible to mint NFT (ERC-1155) using go-ethereum?

While web3.js provides fairly straightforward method to mint NFT, is it possible to mint NFT using go-ethereum? The system we have is using golang as primary programming language and we like to stick ...
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How does Opensea fetch Cryptokitties' metadata?

As far as know CryptoKitties doesn't have metadatas on blockchain, they generating images from kitty's genes. Am I right? But here is the real question: If they don't have metadata on blockchain how ...
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I want to get the image(IPFS link) of the NFT i am using etherscan api

I am trying to list of all NFT tokens in account I am using this etherscan API to get all ERC721 tokens but not getting image in in https://api.etherscan.io/api ?module=account &action=...
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69 views

Number of NFT tokens to mint

I see that many smart contracts for minting NFT tokens use a function that accepts the number of tokens to be minted, here are examples: function adopt(uint256 num) public payable function mintAlien(...

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