Block top - The block number and length in the blockchain (in blocks) on development 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 truly be the a hundred and first transaction submitted https://mylittlebookmark.com/story5932272/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-gaiaathome-eu-gaiaathome-show-user-php-userid-1577569