Block top - The block amount and duration on the blockchain (in blocks) on creation of the current block Nonce - The transaction selection to the from address (Keep in mind this begins at 0 so a nonce of a hundred would truly be the one hundred and first transaction https://explorebookmarks.com/story20450168/how-blockchain-explorer-xrp-can-save-you-time-stress-and-money-https-diigo-com-010nvri