Block height - The block amount and size on 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://wisesocialsmedia.com/story5759744/5-essential-elements-for-blockchain-explorer-ethereum-https-rentry-co-4vomqtzo