Block top - The block selection and length of the blockchain (in blocks) on development of the present block Nonce - The transaction selection with 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://socialmediatotal.com/story5447783/what-does-blockchain-explorer-usdt-mean-https-www-arrowheadpride-com-users-churchkjeldse