Questions tagged [nft]
Questions about NFTs, non-fungible tokens.
154
questions
3
votes
0answers
12 views
Re-entrancy attack explanation and possible fix for specific NFT token - hashmasks
One popular recent NFT project - Hashmasks - Tweeted that some coder called 'samczsun' uncovered a possible re-entrancy attack in their mint function which would have allowed to mint more than the ...
0
votes
0answers
11 views
contract to mint tokens on Rarible
Is it possible that we have a contract that allows the user to mint contracts directly on rarible. If so, please guide how will this be accomplished. I want to mint erc-721 and erc-1155 tokens.
0
votes
0answers
9 views
Truffle migrations error: Transaction was not mined within 750 seconds, please make sure your transaction was properly sent
My env
Truffle v5.3.1 (core: 5.3.1)
Solidity - ^0.8.0 (solc-js)
Node v15.11.0
Web3.js v1.3.5
my truffle-config file
const HDWalletProvider = require('@truffle/hdwallet-provider');
require('dotenv')....
0
votes
1answer
13 views
How to fractionalize ownership of a collection of NFTs across multiple investors?
An Ether wallet contains a large collection of ERC-721 NFTs. Normally only one owner knows the seed phrase for a wallet and therefore is the owner of all the NFTs inside the wallet.
How can such a ...
0
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0answers
12 views
Dropped transaction from opensea [closed]
I sold NFT on opensea. NFT came to the buyer but ETH transaction is dropped. What does it mean how to slove it? Thanks
0
votes
0answers
13 views
What happens when you 'create' an item on the OpenSea app?
Very noobie here. I'm sorry,
Does anybody know what happens on OpenSea when you actually CREATE an item?
I know it doesn't mint one but what it does? (As it signs a transaction tho).
I've been trying ...
1
vote
0answers
19 views
Import NFTs data from Metamask
Goal: Sign in to the server with Metamask (done), import information to the server about NFTs from a wallet (not done) to our platform (trading platform similar to Opensea).
Problem: Metamask uses ...
1
vote
0answers
23 views
What are the factors involved in NFT gas consumption?
After reading this article ("The Unreasonable Ecological Cost of #CryptoArt" Part 1, Part 2),
I'm keen to better understand what are the factors involved in energy consumption by NFTs.
The ...
0
votes
0answers
14 views
How come I could spend 1.5 WETH, even though I only wrapped 1 ETH?
On opensea, I converted (wrapped) 1 ETH to 1 WETH, which is equal to 2 x 0.5 WETH = 1 WETH.
I then spent 0.5 WETH on 3 items = 1.5 WETH, which is greater than the amount I had.
how is this even ...
0
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0answers
28 views
How does one prove NFT ownership? [duplicate]
I've been hearing a lot about nft and I understand some fundamentals, though I am not 100% clear how would one prove ownership of an NFT token.
Does proving NFT ownership requires to pay gas fees?
1
vote
1answer
27 views
How to effectively use the metadata of ERC721
When you store a URL as the metadata of ERC721, does that defeat the purpose of the immutability aspect of a blockchain, since the content that URL is pointing to can be modified? How do I effectively ...
0
votes
1answer
13 views
What is the significance of the function keccak256(abi.encode(to, ids))
I have seen a Solidity smart contract made by Polkamon, which is used to store NFT hashes, so that users can create an NFT without minting it, so that they can save Gas fees if they don't like their ...
0
votes
1answer
30 views
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 ...
0
votes
0answers
32 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 ...
2
votes
1answer
23 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
0
votes
1answer
19 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 ...
0
votes
0answers
5 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");
...
0
votes
0answers
14 views
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 (...
1
vote
1answer
23 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;
...
2
votes
1answer
47 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 ...
0
votes
1answer
13 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 ...
1
vote
1answer
24 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 ...
0
votes
0answers
8 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. ...
0
votes
0answers
13 views
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-...
2
votes
2answers
34 views
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 ...
1
vote
0answers
26 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 ...
1
vote
1answer
23 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 ...
0
votes
0answers
14 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?
3
votes
1answer
150 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, ...
0
votes
0answers
20 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 ...
0
votes
0answers
11 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
0
votes
0answers
14 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....
0
votes
0answers
7 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 ...
1
vote
2answers
27 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 ...
0
votes
0answers
36 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 ...
2
votes
0answers
43 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?
1
vote
2answers
54 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
1
vote
0answers
15 views
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 ...
2
votes
1answer
61 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 ...
1
vote
0answers
22 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 ...
0
votes
0answers
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: ...
-1
votes
1answer
89 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 ...
0
votes
0answers
14 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 ...
0
votes
0answers
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 ...
0
votes
2answers
81 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 ...
1
vote
0answers
32 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 ...
1
vote
2answers
95 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 ...
2
votes
1answer
34 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 .
1
vote
1answer
41 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 ...
3
votes
1answer
122 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...
=...
