Time To Live (TTL) in computer networking marks the lifespan of data. The TTL series, comprising NFTs representing long-lived natural entities — clams, urchins, corals — defies this transience, architecting instead a tradability time lock of centuries. While probing the confluence of time, nature's commercialisation, and fluctuating ecological economics, it also asks if a technology, only 15 years old, can truly understand deep temporal scales.