Block top - The block range and size 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 actually be the 101st transaction submitted by this account) https://bookmarkstime.com/story21113562/the-ultimate-guide-to-eth-blockchain-explorer-https-clancy-olesen-4-mdwrite-net-opening-the-record-your-resource-to-blockchain-investigation