Block top - The block selection and length of your 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 actually be the 101st transaction submitted by this account) https://bookmarkhard.com/story20830845/5-essential-elements-for-blockchain-explorer-ethereum-https-pinshape-com-auth-users-auth-google