Block top - The block selection and size on 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://redhotbookmarks.com/story20782481/new-step-by-step-map-for-blockchain-explorer-unconfirmed-transaction-https-www-instapaper-com-p-16864836