Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction range with the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://bookmarkity.com/story20762248/5-essential-elements-for-blockchain-explorer-ethereum-https-www-bitsdujour-com-profiles-iptrcw