Block top - The block selection and duration with the blockchain (in blocks) on development of the present block Nonce - The transaction selection with 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://ez-bookmarking.com/story20224430/how-blockchain-explorer-xrp-can-save-you-time-stress-and-money-https-list-ly-churchkjeldsen86wpibju