Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction amount to the from address (Keep in mind this commences at 0 so a nonce of one hundred would essentially be the a hundred and first transaction https://dmozbookmark.com/story20724511/a-review-of-blockchain-explorer-xrp-https-www-hulkshare-com-circledrop4