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 101st transaction submitted by this https://travialist.com/story11001482/5-simple-statements-about-blockchain-explorer-solana-explained-https-urlscan-io-result-0199164a-7dbe-7737-944c-199699cc315c