NFTs: Non-Fungible Tokens
Only collections can get verified on SolSea.
The “hash” of an NFT refers to the mint address of that NFT, a string of letters and numbers that is written on the blockchain.
Go to an NFT’s page and click on “View on Solana”.
Find the "View on Solana" button above the price of NFTs.
Once you are redirected to Solscan, you will see the NFT’s hash next to “Token address” in the "Profile Summary" section.
You can easily copy the "hash" (token address, otherwise known as mint address) by clicking on the icon at the far right (see image above).