Questions tagged [nft]

Questions about NFTs, non-fungible tokens.

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Why BSC is used more in DeFi apps? [closed]

I decided to deploy my NFT collectibles in BSC (Binance Smart Chain) because of Gas Prices in Ethereum blockchain. So, I researched some Dapps deployed in BSC. I've found that most of the applications ...
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39 views

How are NFTs traceable?

I'm trying to understand some of the finer points of NFTs. What makes NFTs traceable? Is it the transaction history stored on the ledger? Is there anything else to it? Key to the NFT's traceability is ...
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1answer
37 views

Is there ERC721 decimals?

Is it possible to have decimals balances in ERC721 ? I mean is it possible to say i own 50% of an NFT for example ? Thanks
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31 views

How to have copies of a NFT with different metadata under the same contract

I want to mint different copies of a NFT, for the copy with id 0 has the metadata A and the one with the id 1 has the metadata B, and so on, I want these minted copies to be part of the same NFT ...
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9 views

generate signmessage in python web3

I am learning solidity NFT, I am trying to generate v, r ,s using python web3 require(owner() == ecrecover(keccak256(abi.encodePacked(this, tokenId)), v, r, s), "owner should sign tokenId"); ...
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Deploy a contract (factory) with web3 based on the connected wallet?

A big newbie into solidity here. I’ve managed to compile and deploy (with truffle) a ContractFactory from OpenSea repository. Long story short the part with the deployment is this if (...
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1answer
47 views

Custom metadata urls for ERC1155 tokens

I have create a very basic ERC1155 token from this tutorial: https://docs.openzeppelin.com/contracts/3.x/erc1155 // contracts/GameItems.sol // SPDX-License-Identifier: MIT pragma solidity ^0.6.0; ...
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1answer
128 views

Question about NFT metadata

I require a bit of help regarding NFTs. Can someone please fact check my understanding of how NFTs work, and answer a question about how NFTs are accessed? I have one big question about what is stored ...
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1answer
23 views

What is the best way to download all NFTs data

Mb someone knows what is the best way to download all NFTs data(uri) from contract?? I try to use filter on minting event but I need to do N iterations, because infura or web3 has limitation of 10k ...
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1answer
44 views

How to see value of NFT / ERC 721 token on etherscan?

For instance here https://etherscan.io/token/0x06012c8cf97bead5deae237070f9587f8e7a266d?a=1 is token 1 of CryptoKitties and there are some transfers, but ether value is always set to 0 ether and I ...
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9 views

Should my application be decentralized? (Basic Question)

I know this is a seemingly basic question, but one that I have not found many solid answers to. I have been programming for a few years now and with the recent NFT boom, DApps have caught my interest. ...
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EIP1155 token specific URI's

For EIP1155 standard the current implementation means you are supposed to have 1 base uri and then the metadata for the token is inferred from the tokens ID. Example of such a URI: https://token-cdn-...
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2answers
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Are NFTs (technically, the smart contracts) stateless or stateful?

Are the smart contracts used to manage NFTs stateless or stateful? Ethereum as a protocol seems to be stateful, but the smart contracts for NFT marketplaces seem to be stateless. They don't save any ...
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28 views

Create ERC721 with media file

I want to create an ERC721 smart-contract. The token will be associated to a png file. The users will see there tokens in metamask and i want to display there png files in metamask (this is very ...
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1answer
35 views

How do NFT marketplaces work? (Mostly about authorization of transferring NFTs)

ERC721 says that NFTs can only be transferred by owners/authorized addresses. How are solidity marketplace contracts made to allow a third party address to transfer an NFT from your account to theirs ...
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19 views

How can i pause the token transfer of specific tokenid only in openzeppelin ERC721 contracts?

I want to lock the transfer of specific tokenId of ERC721 Tokens owned by EOA for specific amount of time. Is it possible to achieve that?
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1answer
475 views

How can I verify ownership to allow resale of NFTs?

I have discovered NFTs and ETH recently and would like to build a marketplace like opensea but allows resale of NFTs that are already minted on various block chains(ETH, FLOW). Starting with just ETH, ...
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24 views

Apply fees when sending an NFT to another wallet

I want to create a NFT with solidity. There are builtins functions in ERC721 which allows me to transfer a NFT to another wallet. Here is what i want to do: I want to apply Ethereum fees when an NFT ...
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12 views

NFT ownership with different percentage

is it possible for 2 owners to own an NFT but one of them will have 70% and the other 30% for example, or the ownership has to be equally given? thanks
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16 views

Distribution of tokens right away after ERC20.transferFrom

I would like to ask a question about token distribution with overriding ERC20 transferFrom function. IERC20 Token; function buy(uint256 id) external onlyCardPayable(id, PaymentTypes....
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9 views

Signer Address Recovery

I have these 2 functions in my contract with help of which I want to recover the address of the signer: function formSigningData(address NFTAddress, uint NFTId, uint amount, address tokenAddress, uint ...
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2answers
33 views

NFTs and artificial scarcity

Apologies if this isn’t the right forum. Just trying to understand the concept of scarcity with NFTs. With physical goods, there is tangible scarcity. For instance, there are only a certain amount of ...
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52 views

How can I get the public adress of a NFT on rarible?

1 - How can I get the public address of a NFT on rarible with ETH Block Scanner? Lets assume we got the url (or even the address? of the NFT (does each NFT have a unique ETH address? Where do I find ...
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47 views

Sign an NFT asset with an Ethereum address

Is it available an Ethereum application that allow the owner to let "sign" his NFT asset by other addresses? If not would it be possible to develop it?
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2answers
76 views

i would like to create 60GB video NFT, is it possible?

Is it a matter of price? I would like to know what is the process to do that. Thanks a lot
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NFT (Rarible) double item

I’m new in NFT and Rarible as NFT sell point. I have enter one of my images to sell, but after 2 days of pending signing contract in my Coinbase Wallet, I received message “failed“. I have started ...
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1answer
98 views

How to Fractionalize NFT's (high level)

I have a question to the solidity experts out there. I am Looking into fractionalize NFT's. I was thinking of many different ways of doing it. My first thought was to make a erc-20 market representing ...
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29 views

How to setup NFT on a marketplace for another person

I have been tasked to set up selling NFT on marketplaces like Opensea etc. The issue is how do I perform all these tasks without getting access to their wallet credentials or private key. The only ...
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15 views

Can I Sell Original Scientific Exercises as a Non Fungible Token and Where?

Hello i know some stuff of science and sometimes my brain create real world problems question, real problems answers for example here: physics laws and body dimensions in football dynamics and here: ...
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1answer
134 views

I minted an NFT by mistake while in Rinkeby Test net on my wallet, the NFT sold for 1eth now it’s in my test wallet how do I recover this ETH?

This is the details of the transfer Buyer my1703 Transaction hash 0x5438b317f970448a040bba32b89c1e2c4ae306943764193a19d7e65739ae2283 You earned 1.007224 ETH Type of transaction Purchase Time sent Sun ...
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16 views

ERC-1155 safeTransferFrom() issue: contract doesn't have permission to send tokens from itself

I have a function in an ERC1155 contract that looks like this: function foo(uint _id, uint _amm) external{ safeTransferFrom(address(this), msg.sender, _id, _amm, ""); } Assume the ...
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10 views

Nft if underlying item gets sold

Suppose my friend has a 'Mona lisa', perhaps a simpler painting worth about 1 million. He decides to create an NFT for it, and after authentication someone buys it for 100k. Now he sells the painting ...
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2answers
128 views

Given an ETH wallet address - Fetch all ERC721 tokens currently owned

I would like to create an application that - given a specific wallet address - fetches and displays all NFTs/ERC721 tokens currently owned. How can this be accomplished? Are there any examples ...
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35 views

NFTs uniqueness doubt

I am new to the world of NFTs and I find very hard to understand how the ethereum blockchain enforces their "uniqueness". As far as I know, smart contracts implementing the ERC721 interface ...
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2answers
164 views

OpenSea to ERC 721 (NFTs)

I'm a mere mortal in the coding world (e.g. a complete noob). I'm an NFT artist that has an increasingly popular collection on OpenSea. The collections on OpenSea, however, uses a system called 'Lazy ...
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1answer
36 views

Are there any NFT marketplaces that accept non-media or even arbitrary file formats?

I am curious as to whether there are NFT marketplaces that allow minting tokens for arbitrary file formats say pdfs, text files, etc .
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1answer
48 views

How to have the contract check if the msg.sender currently owns a specific token. (erc721)

Assuming I have a contract to mint my own NFTs: (I'm thinking ERC-721, but not necessarily). I want to create another smart contract that before doing anything, verifies that the address interacting ...
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1answer
129 views

deploying a simple ERC721 contract: transaction could not be decoded: could not recover secp256k1 key: calculated Rx is larger than curve P

You can check out the code here: https://github.com/lopeselio/Chainlink-VH-DynamicNFT Command: truffle migrate --reset --network rinkeby -f 3 Then response is as follows: Compiling your contracts... =...
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225 views

What is the difference between ERC-2665 and what is proposed in EIP-2981? Royalties vs Transfer Fee

There is an EIP for Royalty standards. But there is already a ERC for a Transfer Fee Could ERC-2665 be used to implement royalties across all market places for NFT? What is the difference between ...
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1answer
308 views

On-chain vs Off-chain NFT art platforms

In this thread, an NFT cryptoart collector with deep pockets named beanie said, I have bought a few pieces on FND cause they were significantly cheaper, but now realize they were priced that way for ...
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1answer
122 views

Studying the cryptopunks code. Why are these three conditions required?

So I recently started learning some solidity and was looking at code to make nft series like the punks. I noticed that in their code there are always three conditions that appear to do the same thing. ...
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1answer
189 views

View all NFTs owned by specific Ethereum wallet

Python developer here, very interested in the ETH ecosystem. I would say I'm an experienced developer, but unaware of the many languages/tools that are available to interact with Ethereum wallets. Let'...
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32 views

how do I know that NFT is from the right person

I understand the NFT (at least solidity part).. There's something that's bugging me though. Let's say someone made a super great cat(cat1), published it to ipfs, then called the ERC721 contract and ...
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33 views

How do I limit the number of ERC721 NFTs per account?

I would like to restrict the number of NFTs any one address can own. How would you implement this in a Solidity smart contract? Say I have an ERC721 NFT contract, Square.sol: import "../...
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1answer
79 views

How do I get the number of total NFTs issued by an address?

For example Ethereum Name Service (ENS): https://etherscan.io/token/0x57f1887a8bf19b14fc0df6fd9b2acc9af147ea85 I am looking for an API that returns the total number of NFTs created. I'm using ...
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0answers
24 views

Transfer NFT if account lost

I'm a newbie in NFT, ETH and I have a question. Can I transfer NFT if the account was compromised? More precisely, I mean two situations for example: If I author of Digital Art and I sold it. I will ...
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36 views

How much does it cost to issue a NFT currently on Ethereum?

What does one need to do to issue their own NFT on ethereum? What are the fees involved? Do I have to launch my own smart contract to create nft's and how much does this cost? Or do I use someone else'...
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3answers
129 views

NFT ERC 721 smart contracts

According to my understanding ERC721 smart contracts hold a list a "NFTs/owners" the same way ERC20 smart contracts hold a list of "owners/token balance". NFT are digital assets ...
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1answer
68 views

Can my friend sell an 'Eiffel Tower' with NFT

Suppose I know someone who has ownership over a landmark. Not quite the Eiffel Tower, but to ensure he remains anonymous we could say it is a similar asset. Perhaps simpler because it just sits there ...
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2answers
169 views

Get a list of all token types for ERC1155

How do I identify what token types have been created for a specific ERC1155? I noticed the balanceOf function takes an address (owner) and the token type, but what if I dont know what all token types ...