Certifying existing NFTs

Finding on-chain information for NFTs

Updated over a week ago

To certify an existing NFT, you must be the owner of the NFT and have connected your wallet to your Verisart account. Please note all NFTs minted on Verisart and the Verisart Shopify App are automatically certified.

To certify an existing NFT, you must provide the following on-chain information.

  • Contract Address: The address location of the smart contract that manages the logic for the token.

  • Token ID: A unique instance of the smart contract

  • Owner Address: The wallet address of the owner of the NFT

  • Minting Platform: Where you created your NFT, for example, SuperRare, Rarible, OpenSea or another marketplace. We currently support several minting platforms on the Ethereum blockchain. Select the correct option from the dropdown list. If your minting platform isn't listed, drop us a message and we'll aim to add it.

Where can I find on-chain information?

Look up your NFT listing on OpenSea to get the on-chain information.

Contract Address and Token ID

Find the Contract Address and Token ID under 'Chain Info' on the OpenSea

If the full information is not being displayed and you see an ellipsis, you can find the contract address and token ID by looking at the URL.

For example: opensea.io/assets/ethereum/0xb932a70a57673d89f4acffbe830e8ed7f75fb9e0/20377

  • Contract address: 0xb932a70a57673d89f4acffbe830e8ed7f75fb9e0

  • Token ID: 20377

Finding the owner address

To find the owner address ,click the name of the user who owns the work and copy the string of letters and numbers under the name.

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