Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction number with the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://todaybookmarks.com/story20436032/details-fiction-and-explorer-blockchain-ethereum-https-500px-com-p-barrkijrooney