Block peak - The block variety and size on the blockchain (in blocks) on generation of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://natural-bookmark.com/story20263533/5-easy-facts-about-blockchain-explorer-api-described-https-writeablog-net-storeformat0-blockchain-in-the-microscope-exploring-the-unsung-resources