Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range with the from address (bear in mind this starts at 0 so a nonce of 100 would really be the a hundred and first transaction submitted https://wearethelist.com/story22336797/how-blockchain-explorer-xrp-can-save-you-time-stress-and-money-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers