Block top - The block variety and duration of your blockchain (in blocks) on creation of the current block Nonce - The transaction variety 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://getsocialnetwork.com/story6235247/how-blockchain-explorer-xrp-can-save-you-time-stress-and-money-https-vuf-minagricultura-gov-co-lists-informacin-20servicios-20web-dispform-aspx-id-11784754