Block top - The block quantity and duration from the blockchain (in blocks) on creation of the current 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://bookmarktiger.com/story20416027/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-wikimapia-org-external-link-url-https-cryptoexplorerhub-com