Block top - The block number and length 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 actually be the 101st transaction submitted by this account) https://webookmarks.com/story6001747/top-guidelines-of-eth-blockchain-explorer-http-king-wifi-win-index-php-title-boelkamper2160