# Validate your NFT on Opensea!

By [TheOceanicRealm](https://paragraph.com/@theoceanicrealm) · 2023-07-22

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**Intro:**

Hey there Frens!

So you just minted yourself a cool NFT. Well, Congrats!

But wait. What if your NFT is minted on a chain, not supported (yet) by opensea!

Say Sepolia (An ethereum Testnet)?

I feel you. it’s a real pain not being able to view/validate that awesome NFT aka _non-fungible-token_ on Opensea!

Hence, today, we’re going to learn how to validate your NFTs minted on Sepolia testnet (currently not supported by Opensea).

**Validation URL (Opensea):**

We’re going to use an amazing open source and free-to-use validation tool built by Opensea for validating our NFT!

Sample URL for NFT Validation using opensea tool :-

`https://testnets-api.opensea.io/asset/sepolia/[nft-contract-address]/[nft-token-id]/validate`

**Requirements:**

We would just need a couple of things to validate!

The NFT contract address (we can find this on Etherscan / Sepolia-Scan etc.) & of course the token id for the NFT itself!

For this tutorial, I’m going to use the Foundry Course NFT & a sample NFT token-id.

*   **NFT Contract Address** (e.g. _Foundry Course NFT_) _0x76B50696B8EFFCA6Ee6Da7F6471110F334536321_
    
*   **NFT Token Id** e.g. _1001_
    

**Note:**

_Foundry Course NFT_ are these awesome NFTs you mint if you complete modules in the **Foundry Solidity Course** by **Patrick Collins** ([@PatrickAlphaC](https://www.youtube.com/channel/UCn-3f8tw_E1jZvhuHatROwA)). Do check out below link!

[https://www.youtube.com/playlist?list=PL2-Nvp2Kn0FPH2xU3IbKrrkae-VVXs1vk](https://www.youtube.com/playlist?list=PL2-Nvp2Kn0FPH2xU3IbKrrkae-VVXs1vk)

**Steps:**

Input the contract address and token id in the _Opensea Validation URL,_ as below.

`testnets-api.opensea.io/asset/sepolia/0x76B50696B8EFFCA6Ee6Da7F6471110F334536321/1001/validate`

There should be NO _errors_ in the validation output, the _token\_uri_ associated with the NFT would be shown as in the image below.

![Validation output for Foundry Course NFT: 1001 ](https://storage.googleapis.com/papyrus_images/92408237c9dcccddbc256aad3359763ec6eff0d7a1de027f8fd2120137e4052c.png)

Validation output for Foundry Course NFT: 1001

**NFT METADATA:**

*   To view NFT Metadata, simply copy the complete _token\_uri_ & paste in a new tab.
    
*   The NFT Metadata is shown below, as a JSON with key-value attributes.
    
*   We can see all our NFT attributes such as _name_, _image_, any _description_ etc. Awesome!
    

![Metadata for Foundry Course NFT: 1001](https://storage.googleapis.com/papyrus_images/82f5a9a0cfdc1761deeac3f6b0e54c86dae8737a3aadd8dc795c2ad7cd8d1f4e.png)

Metadata for Foundry Course NFT: 1001

**View the actual NFT Image!**

Great! Now we saw the Metadata associated with our unique NFT.

How about viewing the actual image associated with our NFT directly, without needing opensea or any other marketplace?

Let’s look at this now!

Select the value for the _image_ attribute (starting with **Qm**) from the NFT metadata & paste this in a new tab to view the image (remember to add _ipfs.io/ipfs_ like below).

`https://ipfs.io/ipfs/[paste CID value starting with Qm]`

for e.g.

`https://ipfs.io/ipfs/QmUCK8YsB7Ln5u4Sn6WdsgtD87eEv5fCy1VaG8waMxXq6Q`

![Actual Image for Foundry Course NFT: 1001](https://storage.googleapis.com/papyrus_images/0a373950cb01c290a1aa2ea438f731f9c16e0e59c89df43332aec93dfebbcdee.png)

Actual Image for Foundry Course NFT: 1001

Above image is the actual image the NFT with token id _1001_ is associated to !

Woah! This has been an amazing learning, is it not.

This should be one of (many) such contributions to the awesome web3 community!

**Share** this article far & wide with all your Web2/ Web3 connections!

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**Notice:**

The ETH logo and Opensea logo are registered trademarks. All rights reserved.

**Tags:**

#web3, #nft, #blockchain, #opensea, #ethereum, #non-fungible-token, #erc721, #erc1155, #sepolia, #verify-nft, #validate-nft, #web3community, #ipfs, #Foundry-Course-NFT, #Solidity, #metadata, #nft-metadata

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*Originally published on [TheOceanicRealm](https://paragraph.com/@theoceanicrealm/validate-your-nft-on-opensea)*