Block top - The block number and length from the blockchain (in blocks) on development of the present 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 generation https://listfav.com/story22398682/blockchain-explorer-fundamentals-explained-https-clancy-olesen-4-mdwrite-net-opening-the-record-your-resource-to-blockchain-investigation