Block top - The block selection and duration of the blockchain (in blocks) on development of the present block Nonce - The transaction range 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://bookmarkahref.com/story20217744/5-tips-about-blockchain-explorer-you-can-use-today-https-www-giveawayoftheday-com-forums-profile-1172807