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 begins at 0 so a nonce of one hundred would truly be the a hundred and first transaction https://onelifesocial.com/story5635478/details-fiction-and-explorer-blockchain-ethereum-https-www-webwiki-co-uk-cryptoexplorerhub-com