Block top - The block selection and duration of your blockchain (in blocks) on creation of the current block Nonce - The transaction quantity for that from address (Keep in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://bookmarkpagerank.com/story20435521/explorer-blockchain-base-an-overview-https-vuf-minagricultura-gov-co-lists-informacin-20servicios-20web-dispform-aspx-id-11784754