Block top - The block variety and size of the blockchain (in blocks) on generation of the current block Nonce - The transaction selection with the from address (Keep in mind this starts off at 0 so a nonce of a hundred would truly be the 101st transaction submitted by https://thebookmarklist.com/story20557330/facts-about-blockchain-explorer-confirmed-transactions-revealed-https-www-instapaper-com-p-16864836