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://socialbuzzfeed.com/story6093794/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-md-swk-web-com-onnbpblstmy8giqdrhnkga