Is BTT valid forever?

Could you please elaborate on the validity of BTT? Is it designed to be a permanent digital asset, or does it have an expiration date? Additionally, how does the longevity of BTT correlate with its utility and adoption within the cryptocurrency and financial industry? Is there any potential for BTT to become obsolete or replaced by newer technologies in the future? Furthermore, what factors influence the sustained validity of BTT, and how can investors and users ensure its long-term reliability? Thank you for your insights on this matter.