Block top - The block number and length from the blockchain (in blocks) on development 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 basically be the 101st transaction submitted by this account) https://myeasybookmarks.com/story6042389/a-review-of-blockchain-explorer-xrp-https-vuf-minagricultura-gov-co-lists-informacin-20servicios-20web-dispform-aspx-id-11784754