Block peak - The block selection and length in 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://bookmarkcork.com/story21424600/the-definitive-guide-to-explorer-blockchain-ethereum-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers