Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction number for your from address (Keep in mind this commences at 0 so a nonce of a hundred would basically be the one hundred and first transaction https://maroonbookmarks.com/story20519474/5-simple-statements-about-blockchain-explorer-solana-explained-https-www-instapaper-com-p-16864836