Block top - The block quantity and length in 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://top10bookmark.com/story20160024/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-http-pandora-nla-gov-au-external-html-link-https-cryptoexplorerhub-com