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 (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://bookmarklinking.com/story8605388/how-blockchain-explorer-xrp-can-save-you-time-stress-and-money-https-coveruncle7-werite-net-blockchain-explorers-the-key-to-comprehending-copyright-transactions