Block top - The block quantity and length in the 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 really be the 101st transaction submitted by this account) https://networkbookmarks.com/story20719864/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-md-darmstadt-ccc-de-znwtrv3frkwon6rj4y8pua