Block top - The block number and length from the blockchain (in blocks) on creation of the present block Nonce - The transaction selection with 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://bookmarkstown.com/story20736336/explorer-blockchain-tron-an-overview-https-setiathome-berkeley-edu-show-user-php-userid-13199150