Block top - The block selection and length from the blockchain (in blocks) on development 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 really be the 101st transaction submitted by this account) https://socialinplace.com/story5999756/what-does-eth-blockchain-explorer-mean-https-www-bitsdujour-com-profiles-iptrcw