Identity Is Not One Hash
Exact, logical, semantic, contextual, representation, spatial, and receipt identities
AI systems often overload one ID with several meanings. Glyphd separates them.
Exact content identity
Cryptographic digest of exact bytes or canonical exact serialization.
Use for integrity, exact retrieval, immutable evidence, and deduplication.
Logical identity
The continuing object across versions: a Project, Decision, Actor, Scene, or Artifact.
Use for lineage and current-pointer resolution.
Semantic identity
A versioned compiler's canonical semantic class under a declared profile.
Use for lookup and bounded reuse. Never substitute for exact proof.
Contextual reuse identity
Semantic class plus project, authority, task, policy, freshness, and dependencies.
Use to determine whether reuse is permitted now.
Dependency identity
Digest or Merkle root over exact prerequisites and role/order.
Use for invalidation and reconstruction.
Representation identity
One encoding, fold, proxy, tokenization, cache artifact, or render.
Several representations can resolve to the same exact content.
Spatial identity
A place in FOVEA or another projection.
Use for location and traversal. Never use as canonical truth.
Receipt identity
The exact operation or transition record that explains what happened.
Example
logical object: paper:P10
exact content: sha256:...
semantic class: paper/ooc-meta-codec@compiler-v2
reuse key: project+public-scope+dependencies
representation: fold2:...
spatial address: glyph://labs/compression/P10
receipt: receipt:publish-...
Changing a PDF encoding changes representation, not the paper's logical identity. Revising the paper changes exact content. Moving a card changes place. A policy update can invalidate reuse without deleting exact content.
The taxonomy is a correctness boundary, not naming bureaucracy.
Source register
- N03-S01 — GlyphCAS Design Report.
How_we_can_make_CAS_lightning_fast_for_any_LLM_by_design_or_adaptation.docx - N03-S02 — GlyphDrive v0.2 Ratification Gate.
PASTE-INTO-OPUS-GLYPHDRIVE-V02-RATIFICATION-R0.md - N03-S03 — GlyphDrive OOC fold/2 Specification.
GLYPHDRIVE-OOC-FOLD-SPEC-v0.2.md