Block top - The block number 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://mediasocially.com/story5283771/5-essential-elements-for-blockchain-explorer-ethereum-https-www-webwiki-co-uk-cryptoexplorerhub-com