Can I use my NFT on the Ethereum blockchain?

Yes. All HENI NFTs are minted on the Palm blockchain, which is a new NFT ecosystem that has a two-way bridge to Ethereum. 

HENI NFTs adhere to the ERC 721 standard on Palm (which is EVM compatible) and you will be able to move your NFT from Palm to Ethereum, and back, using the ERC 721 NFT bridge and trade it in the usual places.  

You can find the bridge here