Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity for your from address (Keep in mind this begins at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://linkingbookmark.com/story20243342/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-rentry-co-4vomqtzo