Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://nybookmark.com/story22051019/what-does-eth-blockchain-explorer-mean-https-www-webwiki-it-cryptoexplorerhub-com