ERC721 Token Not Appearing in OpenSea After Transfer

NFT
1

I’m having trouble with my ERC721 token collection on OpenSea testnet. After I transfer an NFT to another wallet, it doesn’t show up in the collected section even though the blockchain shows the correct owner.

Here’s my contract code:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "@openzeppelin/contracts@4.6.0/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts@4.6.0/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts@4.6.0/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts@4.6.0/utils/Counters.sol";

contract CRYPTOBEASTS is ERC721, ERC721Enumerable, ERC721URIStorage {
    using Counters for Counters.Counter;
    
    Counters.Counter private _tokenCounter;
    uint256 TOTAL_LIMIT = 3000;
    
    constructor() ERC721("CRYPTOBEASTS", "CBT") {}
    
    function createToken(address recipient, string memory tokenURI) public {
        uint256 newTokenId = _tokenCounter.current();
        require(newTokenId <= TOTAL_LIMIT, "Maximum tokens already created!");
        _tokenCounter.increment();
        _safeMint(recipient, newTokenId);
        _setTokenURI(newTokenId, tokenURI);
    }
    
    function _beforeTokenTransfer(address sender, address receiver, uint256 tokenId)
        internal
        override(ERC721, ERC721Enumerable)
    {
        super._beforeTokenTransfer(sender, receiver, tokenId);
    }
    
    function _burn(uint256 tokenId) internal override(ERC721, ERC721URIStorage) {
        super._burn(tokenId);
    }
    
    function tokenURI(uint256 tokenId)
        public
        view
        override(ERC721, ERC721URIStorage)
        returns (string memory)
    {
        return super.tokenURI(tokenId);
    }
    
    function supportsInterface(bytes4 interfaceId)
        public
        view
        override(ERC721, ERC721Enumerable)
        returns (bool)
    {
        return super.supportsInterface(interfaceId);
    }
}

The contract works fine for minting and transferring tokens. I can use safeTransferFrom to move tokens between addresses. But when I check OpenSea after transferring a token, it doesn’t appear in the collected tab of the new owner’s account. The blockchain confirms the transfer happened correctly and shows the right owner, but OpenSea doesn’t display it. Has anyone else run into this problem with OpenSea testnet?

2

Had this exact problem with my NFT collection last month. OpenSea wasn’t picking up the Transfer event after manual transfers. Your contract looks fine, but OpenSea’s indexer misses events on testnet sometimes. Here’s what fixed it for me: go straight to the NFT’s OpenSea page (contract address + token ID) and hit the refresh metadata button. No page yet? Create one at opensea.io/assets/[network]/[contract-address]/[token-id]. Also check if your tokenURI endpoint works and returns proper JSON - needs name, description, and image fields. I’ve seen NFTs exist but not display because of CORS issues or bad metadata. Try manually importing the collection in OpenSea too. Sometimes the platform needs you to explicitly tell it the collection exists before it tracks transfers properly.

3

Hmm, that’s interesting - I’ve seen this before but curious about a few things. Did you check if the transfer event is being emitted properly? OpenSea relies on those events to track ownership changes.

How long has it been since the transfer? I know CreativePainter45 mentioned OpenSea can be slow, but testnet sometimes takes hours or even days to reflect changes.

One thing that caught my eye - are you using the refresh metadata button on the specific NFT page in OpenSea? Not just refreshing the browser, but actually clicking the refresh button with the circular arrow icon on the NFT’s individual page?

Quick question - when you say “collected tab” are you looking at the right network? Sometimes people accidentally switch between mainnet and testnet views. Also have you tried looking at the “hidden” tab? OpenSea sometimes auto-hides transferred NFTs there for some reason.

What testnet are you using btw? Goerli, Sepolia, Mumbai? Different testnets have different sync speeds with OpenSea.

4

opensea testnet can be slow to update. try refreshing the page for your nft to force the metadata update. also, make sure your tokenURI is returning a valid json - if the metadata is broken, it won’t show your nft.