Block top - The block quantity and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction amount to the from address (Remember this starts off at 0 so a nonce of a hundred would really be the 101st transaction submitted by this account) https://social-galaxy.com/story6036038/top-guidelines-of-explorer-blockchain-solana-https-writeablog-net-storeformat0-blockchain-in-the-microscope-exploring-the-unsung-resources