Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range 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://bookmarkdistrict.com/story20424559/how-blockchain-explorer-xrp-can-save-you-time-stress-and-money-https-www-instapaper-com-p-16864836