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://pr1bookmarks.com/story20771995/5-essential-elements-for-blockchain-explorer-ethereum-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers