Block top - The block selection and length of your blockchain (in blocks) on development of the present block Nonce - The transaction range with the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://bookmarkbooth.com/story20837783/a-review-of-blockchain-explorer-xrp-https-graph-org-unveiling-transparency-how-blockchain-explorers-function-09-04