Block top - The block range and duration on 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 basically be the 101st transaction submitted by this account) https://indexedbookmarks.com/story20137892/not-known-facts-about-blockchain-explorer-usdt-http-www-stes-tyc-edu-tw-xoops-modules-profile-userinfo-php-uid-3693980