Block top - The block selection and length from the blockchain (in blocks) on development of the present block Nonce - The transaction amount for that 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://hyperbookmarks.com/story20515409/explorer-blockchain-base-an-overview-https-escatter11-fullerton-edu-nfs-show-user-php-userid-9253086