Multi-Epoch Security Architectures for Generational Digital Assets

As tokenization of real-world assets accelerates toward $30 trillion by 2034, a critical security gap emerges: cryptographic systems designed for 15-20 year horizons are protecting assets requiring 50-300 year authentication. This paper formalizes the requirements for multi-epoch security architectures, introducing mathematical frameworks for generational key management. We establish information-theoretic bounds for century-scale digital asset protection and propose a taxonomy of security horizons aligned with asset lifecycles. Our framework demonstrates that true generational security requires epoch-synchronized key derivation from deterministic yet externally verifiable entropy sources, rather than reliance on computational hardness assumptions vulnerable to technological advancement. We present formal security models for 50-year (enterprise), 100-year (institutional), and 300-year (archival) protection classes, proving minimum entropy accumulation requirements for each tier. Part of the Configuration Space Cryptography research series. Related works: Natural Key Distribution (DOI: 10.5281/zenodo.18013432), Configuration Space Cryptography (DOI: 10.5281/zenodo.18013666), Adversary Models (DOI: 10.5281/zenodo.18014097), MDSA (DOI: 10.5281/zenodo.18014295).