Block top - The block number and length on the blockchain (in blocks) on creation of the present block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://bookmarksaifi.com/story20660352/how-blockchain-explorer-xrp-can-save-you-time-stress-and-money-https-lamm-tolstrup-3-blogbright-net-investigating-the-unseen-the-role-of-blockchain-explorers-in-the-copyright-world