Previously, OpenSea had been returning the OpenSea CDN url in NFT responses. One example is the List NFT endpoints which returned the NFT Model which included
image_url. Going forward, the
image_url field returned when listing NFTs, is deprecated.
Instead, users should call the Get an NFT endpoint to retrieve urls. This response will include both the
animation_url. The value returned will be nearly equivalent to the metadata read on-chain. If the url is an ipfs or arweave file, OpenSea will use one of the public gateways for ease of use.