Block top - The block variety and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://atozbookmark.com/story20371692/what-does-eth-blockchain-explorer-mean-https-escatter11-fullerton-edu-nfs-show-user-php-userid-9253086