Add Labyricorn project and devlog content

2026-08-11 22:43:26 -07:00
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+_model: devlog-entry
+---
+schema_version: 1
+---
+title: Formalizing the provenance contract
+---
+date: 2026-07-18
+---
+author: Christopher Chambers
+---
+summary: The provenance design advanced from a normative architecture into versioned schemas, fixtures, verification vectors, and canonical assertion envelopes.
+---
+tags: provenance, JSON Schema, verification, v0.4.0
+---
+source_commit: cb36bbc95895244f067934adc3531e733c0950db
+---
+body:
+
+Thinkloom's provenance goals require more than an activity timeline. The system
+needs stable records, explicit retention rules, deterministic verification, and
+a way to describe contribution relationships without making unsupported claims
+about authorship.
+
+The Stage 1 work documented the normative architecture and state machines. The
+Stage 2 package then introduced JSON Schema contracts, valid and invalid
+fixtures, canonicalization and event-chain vectors, release Merkle construction,
+key-rotation cases, and verification statuses.
+
+Version 0.4.0 extended that foundation with immutable provenance assertions,
+point-in-time evaluations, semantic registries, independent confidence
+dimensions, evidence classes, stable reason codes, and deterministic dependency
+invalidation vectors.
+
+The schema package is a formal design and test contract. The current native
+writer must not be described as conforming until the later implementation and
+fault-injection stages are complete.
+
+[View the v0.4.0 commit](https://git.labyricorn.com/Labyricorn/thinkloom-openai-hackathon/commit/cb36bbc95895244f067934adc3531e733c0950db)