Block top - The block quantity and length in the blockchain (in blocks) on development of the present block Nonce - The transaction range for that from address (Remember this starts off at 0 so a nonce of a hundred would really be the 101st transaction submitted by this account) https://infopagex.com/story5942726/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-coveruncle7-werite-net-blockchain-explorers-the-key-to-comprehending-copyright-transactions