Odaily News The Stacks Foundation published a statement on X stating that the code writing for the Nakamoto upgrade has been completed ahead of schedule (originally scheduled to be completed on July 15), and is currently undergoing internal and external audits, testing, and bug fixes. It is understood that the Stacks Nakamoto upgrade will be able to achieve a transaction speed of about 5-10 seconds, which is about 100 times faster than the current transaction speed.