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 (bear in mind this begins at 0 so a nonce of a hundred would really be the one hundred and first transaction https://social4geek.com/story6245334/blockchain-explorer-usdt-trc20-fundamentals-explained-https-www-rosewood-edu-na-profile-engelhczrussell69263-profile