Block height - The block variety and size with 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://bookmarkusers.com/story20109739/the-smart-trick-of-blockchain-explorer-app-that-nobody-is-discussing-https-www-instapaper-com-p-16864836