Block top - The block selection and length of the blockchain (in blocks) on creation 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://followbookmarks.com/story20596969/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-md-swk-web-com-onnbpblstmy8giqdrhnkga