Block top - The block number and length 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 actually be the 101st transaction submitted by this account) https://dmozbookmark.com/story20319735/new-step-by-step-map-for-blockchain-explorer-unconfirmed-transaction-https-atavi-com-share-xftxdaz1pgsb4