Block top - The block number and duration with the blockchain (in blocks) on generation 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 really be the 101st transaction submitted by this account) https://bookmarkfly.com/story20316128/top-guidelines-of-eth-blockchain-explorer-https-www-blurb-com-user-optionname7