Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction range with the from address (bear in mind this starts at 0 so a nonce of 100 would really be the a hundred and first transaction submitted https://thebookpage.com/story5966789/blockchain-explorer-fundamentals-explained-https-writeablog-net-storeformat0-blockchain-in-the-microscope-exploring-the-unsung-resources