Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://getsocialnetwork.com/story6027092/5-simple-techniques-for-explorer-blockchain-tron-https-escatter11-fullerton-edu-nfs-show-user-php-userid-9253086