Block top - The block selection and duration of your blockchain (in blocks) on creation of the present block Nonce - The transaction variety for 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://bookmarkingalpha.com/story20600374/facts-about-tron-blockchain-explorer-revealed-https-mathiasen-curry-2-federatedjournals-com-diving-deep-blockchain-explorers