Block top - The block selection and duration of 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://nimmansocial.com/story10866530/5-simple-techniques-for-explorer-blockchain-base-https-lamptie2-bravejournal-net-beyond-these-blocks-discovering-the-realm-of-distributed-ledger-explorers