Block height - The block amount and size on the blockchain (in blocks) on generation 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 really be the 101st transaction submitted by this account) https://articlescad.com/the-remarkable-adventurers-in-the-cyber-frontier-grasping-distributed-ledger-instruments-325096.html