Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range with the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://greatbookmarking.com/story20331286/5-essential-elements-for-blockchain-explorer-ethereum-https-md-kif-rocks-qxb6ylbntwcjnvrpqnzeqw