Block top - The block selection and duration on the blockchain (in blocks) on development of the present block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://socialdummies.com/story5232510/5-simple-techniques-for-explorer-blockchain-tron-https-rentry-co-4vomqtzo