Block top - The block selection and duration with the blockchain (in blocks) on creation of the present block Nonce - The transaction selection for the from address (Keep in mind this commences at 0 so a nonce of a hundred would essentially be the one hundred and first transaction https://peakbookmarks.com/story20680421/5-simple-statements-about-blockchain-explorer-solana-explained-https-notes-io-ww2s8