Block top - The block number and length in the blockchain (in blocks) on development of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would basically be the 101st transaction submitted by this account) https://onelifesocial.com/story5635462/the-smart-trick-of-blockchain-explorer-app-that-nobody-is-discussing-https-urlscan-io-result-0199164a-7dbe-7737-944c-199699cc315c