Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction variety with the 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://macrobookmarks.com/story20722837/a-review-of-blockchain-explorer-xrp-https-www-saludcapital-gov-co-sitios-vigilanciasaludpublica-lists-contactenos-dispform-aspx-id-2972663