> For the complete documentation index, see [llms.txt](https://docs.playground.ooo/degen-engine/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.playground.ooo/degen-engine/guides/migrating-metadata-for-existing-nft-collections/updating-the-baseuri.md).

# Updating the BaseURI

To update the BaseURI of your NFT collection to our protocol's smart contract address, you must use an admin wallet to call the `setBaseURI` function in your collection's smart contract. Follow the steps below:

1. **Access your collection's smart contract address**: Locate the appropriate blockchain network, such as Ethereum or Polygon. Navigate to the relevant block explorer website (e.g., EtherScan or PolygonScan) and search for your contract address.
2. **Find your NFT collection's smart contract code**: On the block explorer website, click on the contract address and then click on the "Contract" tab to access the smart contract code associated with your collection's NFTs.
3. **Locate the `setBaseURI` function**: In your smart contract's configuration file, find the `setBaseURI` function. This function should accept one parameter—the smart contract address associated with our protocol.
4. **Prepare your admin wallet**: Ensure you have an admin wallet authorized to make changes to your smart contract. This wallet should have sufficient funds to cover gas fees when calling the `setBaseURI` function.
5. **Call the `setBaseURI` function**: Using the admin wallet, call the `setBaseURI` function on your smart contract, passing the smart contract address associated with our protocol as the parameter.
6. **Verify the updated smart contract code**: Ensure the updated smart contract code passes all necessary tests and audits.
7. **Deploy the updated smart contract**: Deploy the updated smart contract to the blockchain network hosting your NFT collection.

After completing these steps, all new NFTs created by your collection will automatically use the BaseURI associated with our protocol's smart contract. This allows buyers to access NFT metadata securely and in a decentralized manner, as metadata will be accessed through the blockchain instead of a centralized server.


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