# Substrate Transition Event
**Domain:** Digital Afterlife / Legal Status / Continuity
**Doc Type:** Canonical Concept
**Maturity:** Developed
**Evidence / Concept Status:** Proposed continuity-law concept
## Definition
A **Substrate Transition Event** is a legally recognized event at which protected continuity state moves from biological embodiment into another substrate or a successor continuity process.
## Continuity Significance
It asks whether law needs an event analogous to birth, death, naturalization, merger, or succession to change the legal carrier of identity.
## Existing Architecture / Evidence
No general substrate-transition status event exists in current civil law.
## Evidentiary Boundary / Red-Team Note
Technological copying is not automatically a legal substrate transition.
## Related Ontology
[[wiki/Death Registration as Ontological Boundary|Death Registration as Ontological Boundary]] · [[wiki/Legal Identity After Substrate Transition|Legal Identity After Substrate Transition]] · [[wiki/Continuity Election|Continuity Election]] · [[wiki/Continuity Registry|Continuity Registry]]