nft.storage VS openzeppelin-contracts

That flagship app you are looking for seems to be https://nft.storage/ (by Protocol Labs).

And make free uploads to it here: https://nft.storage

Diagram Roughly like this. I use https://nft.storage/ for all my nft projects

NFT.Storage is a counterpart to Web3.Storage for a specific purpose: a place to safely store and save your NFTs. Many people use IPFS with their NFTs personally, or using other services as well

1. Sites like https://nft.storage/ (which I dislike as they have a silly bug with content types) or Pinata also got to IPFS.

2. Good point.

Btw you can check: https://nft.storage/

https://ipfs.tech/ combined with https://nft.storage/

Lastly upload your Metadata JSON to Decentralized Object Storage like IPFS, NFT.Storage or Pinata. You may also use a Centralized Object Storage service like AWS S3. Make sure to record the metadata object URI returned from your storage service of choice. We shall use it while minting the NFT.

For just a handful of images (aka manually processing them) you could also use https://nft.storage/

btw I tried on opensea testnet and used nft.storage for ipfs

// SPDX-License-Identifier: GPL-3.0 pragma solidity ^0.8.20; import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v5.0.0/contracts/token/ERC20/ERC20.sol"; interface Sfs {     function register(address _recipient) external returns (uint256 tokenId); } contract ModeToken is ERC20 {     address feeReceiver = msg.sender;     constructor() ERC20("ModeTokenSFSTest", "SFST2") { //Example amount to mint our ERC20         _mint(msg.sender, 1000 10 * 18);   // This is the SFS contract address on testnet Sfs sfsContract = Sfs(0xBBd707815a7F7eb6897C7686274AFabd7B579Ff6); //Registers this contract and assigns the NFT //to the deployer of this contract sfsContract.register(msg.sender);     } }

Lets look the events of Open Zeppelin’s ERC20 token contract:

ERC-777 is difficult to implement properly, due to its susceptibility to different forms of attack(opens in a new tab). It is recommended to use ERC-20 instead. This page remains as a historical archive.