Block top - The block range and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction selection 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://crossbookmark.com/story20401294/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-escatter11-fullerton-edu-nfs-show-user-php-userid-9253086