About
About Eternis.
Preserving complete human identity — biological and digital — so the people you love are never fully lost.

Guillermo Rivacoba, DDS
Founder & CEO
Guillermo is a practicing dentist who watched patients arrive after the window for biological preservation had already closed. The biology they needed was gone, and the options with it. That clinical observation — repeated hundreds of times — became the founding insight behind Eternis.
The personal motivation is simpler: he built Eternis so his parents could be among the first to preserve their complete biological and digital identity. The convergence of cryogenic preservation, AI, and post-quantum cryptography made it possible. The absence of any consumer platform made it necessary.
Eternis is the result: a single platform that preserves your DNA and stem cells, protects your sequenced genome with zero-knowledge encryption, and — over time — captures the digital dimension of who you are. Read the full manifesto →
Our Partners
Biorepository Partner
Sampled
CLIA/CAP-certified biorepository partner for sample collection, processing, and long-term cryogenic storage.
Cryogenic Storage
Biobank Partner
US-based, certified cryogenic storage facility meeting clinical-grade standards. Partner details announced at launch.