Block top - The block number and duration on the blockchain (in blocks) on generation of the present block Nonce - The transaction variety for your from address (bear in mind this commences at 0 so a nonce of 100 would basically be the 101st transaction submitted by this account) https://listingbookmarks.com/story20585684/helping-the-others-realize-the-advantages-of-blockchain-explorer-one-https-md-farafin-de-0k9kbddstjwuieqthhbjgg