Block top - The block quantity and size on the blockchain (in blocks) on generation of the current block Nonce - The transaction amount to the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://optimusbookmarks.com/story20544583/top-guidelines-of-explorer-blockchain-solana-https-www-blurb-com-user-optionname7