Block top - The block number and size on the blockchain (in blocks) on generation of the current block Nonce - The transaction amount for that from address (Remember this starts off at 0 so a nonce of a hundred would really be the 101st transaction submitted by this account) https://socialrus.com/story21477764/5-essential-elements-for-blockchain-explorer-ethereum-https-www-instapaper-com-p-16864836