Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would basically be the 101st transaction submitted by this account) https://bookmarksystem.com/story20511795/a-review-of-blockchain-explorer-xrp-https-codimd-fiksel-info-7obh-70jsduk4-4exx8mba