Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would basically be the 101st transaction submitted by this account) https://mypresspage.com/story5658074/details-fiction-and-explorer-blockchain-ethereum-https-www-instapaper-com-p-16864836