Block top - The block amount and size on the blockchain (in blocks) on creation of the present block Nonce - The transaction selection 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://atozbookmark.com/story20108405/helping-the-others-realize-the-advantages-of-blockchain-explorer-one-https-clancy-olesen-4-mdwrite-net-opening-the-record-your-resource-to-blockchain-investigation