Block top - The block range and duration of your blockchain (in blocks) on generation of the present block Nonce - The transaction number for your 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://bookmarkspecial.com/story20965186/not-known-factual-statements-about-blockchain-explorer-tool-https-coveruncle7-werite-net-blockchain-explorers-the-key-to-comprehending-copyright-transactions