What is the lifespan of a BIR?

I'm curious to know, what exactly is the lifespan of a BIR in the realm of cryptocurrency and finance? Is it a fixed duration or does it vary depending on certain factors? Furthermore, what happens to a BIR once it reaches the end of its lifespan? Is there a renewal process or do users need to take specific actions to maintain or replace it? Understanding the lifespan of a BIR would greatly aid in navigating the complex landscape of cryptocurrency and finance.