Block top - The block selection and duration with the blockchain (in blocks) on generation 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://bookmarkspy.com/story21911325/a-review-of-blockchain-explorer-xrp-https-www-footballzaa-com-out-php-url-https-cryptoexplorerhub-com