Block height - The block amount and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction selection with the from address (Remember this starts off at 0 so a nonce of a hundred would basically be the 101st transaction submitted by this account) https://thebookmarknight.com/story20486198/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-www-instapaper-com-p-16864836