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 off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://thebookmarkage.com/story20390042/5-essential-elements-for-blockchain-explorer-ethereum-https-canvas-instructure-com-eportfolios-4028322-entries-14252553