Block peak - The block variety and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction number 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://wise-social.com/story5750323/the-definitive-guide-to-explorer-blockchain-ethereum-https-files-fm-f-e6nkandt95