The IHederaTokenService interface requires non-fungible token (NFT) information to include metadata and creation time, which are not part of the IERC721 interface and are currently unavailable for retrieval. To support this functionality, it is necessary to store the creation time in the token’s storage and use base64 encoding to generate metadata from the tokenUri (which is defined in the IERC721 interface).
The IHederaTokenService interface requires non-fungible token (NFT) information to include metadata and creation time, which are not part of the IERC721 interface and are currently unavailable for retrieval. To support this functionality, it is necessary to store the creation time in the token’s storage and use base64 encoding to generate metadata from the tokenUri (which is defined in the IERC721 interface).