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 actually be the 101st transaction submitted by this account) https://letsbookmarkit.com/story20331751/the-definitive-guide-to-explorer-blockchain-ethereum-https-www-webwiki-co-uk-cryptoexplorerhub-com