Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction number for the from address (Keep in mind this commences at 0 so a nonce of one hundred would essentially be the one hundred and first transaction https://social4geek.com/story6234451/blockchain-explorer-usdt-trc20-fundamentals-explained-https-intensedebate-com-people-hawkwhorl3