Block top - The block selection and duration with the blockchain (in blocks) on generation of the present block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://bookmarklethq.com/story20471989/5-essential-elements-for-blockchain-explorer-ethereum-https-www-orkhonschool-edu-mn-profile-coxqonpallesen82836-profile