Block top - The block selection and duration in the blockchain (in blocks) on development of the present block Nonce - The transaction range with the from address (Remember this starts off at 0 so a nonce of a hundred would basically be the one hundred and first transaction submitted https://digibookmarks.com/story20181079/the-definitive-guide-to-explorer-blockchain-ethereum-https-rentry-co-4vomqtzo