Block top - The block number and length on the blockchain (in blocks) on generation of the present block Nonce - The transaction number for your from address (Keep in mind this commences at 0 so a nonce of a hundred would basically be the 101st transaction submitted by this https://totalbookmarking.com/story20756761/what-does-eth-blockchain-explorer-mean-https-www-instapaper-com-p-16864836