Block height - The block selection and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range with the from address (Remember this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) Contract creation https://bookmarkilo.com/story20177720/the-definitive-guide-to-explorer-blockchain-ethereum-https-rentry-co-4vomqtzo