Block top - The block number and length in the blockchain (in blocks) on development of the current block Nonce - The transaction range with the from address (Remember this begins at 0 so a nonce of one hundred would in fact be the a hundred and first transaction submitted https://bookmarkinginfo.com/story20184331/details-fiction-and-explorer-blockchain-ethereum-https-writeablog-net-storeformat0-blockchain-in-the-microscope-exploring-the-unsung-resources