Block top - The block number and length in the blockchain (in blocks) on development of the current block Nonce - The transaction amount for that from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://bookmarklethq.com/story20572983/not-known-facts-about-blockchain-explorer-unconfirmed-transaction-https-lamptie2-bravejournal-net-beyond-these-blocks-discovering-the-realm-of-distributed-ledger-explorers