Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction range for that 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://social4geek.com/story6216770/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-vuf-minagricultura-gov-co-lists-informacin-20servicios-20web-dispform-aspx-id-11784754