Block top - The block quantity and size on the blockchain (in blocks) on generation of the present block Nonce - The transaction number for your from address (Keep in mind this begins at 0 so a nonce of one hundred would essentially be the one hundred and first transaction https://mixbookmark.com/story6169846/not-known-facts-about-blockchain-explorer-unconfirmed-transaction-https-diigo-com-010nvri