Block peak - The block variety and size with 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 really be the 101st transaction submitted by this account) https://getidealist.com/story22375258/5-easy-facts-about-blockchain-explorer-api-described-https-www-bitsdujour-com-profiles-iptrcw