Block top - The block quantity and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction variety 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://social-lyft.com/story10466848/the-definitive-guide-to-explorer-blockchain-ethereum-https-blogfreely-net-pathfrog8-blockchain-trackers-a-gateway-to-comprehending-copyright-transactions