Block height - The block quantity and length 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://nimmansocial.com/story10410207/how-blockchain-explorer-xrp-can-save-you-time-stress-and-money-https-articlescad-com-the-remarkable-adventurers-in-the-cyber-frontier-grasping-distributed-ledger-instruments-325096-html