Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction variety for the from address (bear in mind this begins at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://bookmarkinglife.com/story6187085/how-blockchain-explorer-xrp-can-save-you-time-stress-and-money-https-www-instapaper-com-p-16864836