LCAD
Lattice Core Architecture Document
LCAD is the architectural authority for Lattice Core and the controlling source for questions of what Lattice Core is architecturally.
It establishes the architecture from which downstream standards, specifications, implementations, explanatory material, and other dependent activity must derive without becoming alternative sources of architectural definition.
Document Status
Lattice Core Architecture Document
Document: LCAD
Full title: Lattice Core Architecture Document
Document role: Architectural definition of Lattice Core
Authority domain: Architecture
Publication status: Reconstruction and verification
Governance authority: LSN Foundation
Architecture Reconstruction
LCAD is currently undergoing source-truth reconstruction and architectural verification. Its role and authority within the canonical documentation framework are established, but its current public canonical edition has not yet been released.
This record identifies the document and its authority domain. It does not substitute for the reconstructed LCAD or independently establish architectural propositions that remain under verification.
Role of LCAD
The Architectural Authority
LCAD establishes Lattice Core at architectural level. It is the controlling source for the architecture's constituents, relationships, responsibilities, boundaries, invariants, primitives, canonical layers, and architecture-level conditions.
Architectural propositions are therefore established in LCAD rather than inferred from standards, specifications, implementations, explanatory documents, website material, or other downstream sources.
Architecture Must Be Complete Here
LCAD must contain the architecture required at architectural level. A missing architectural proposition cannot be silently supplied by a downstream standards or specification document.
Where something is architectural, it belongs in LCAD before downstream documents may derive normative or technical detail from it.
Architectural Responsibility
The canonical documentation model assigns architectural definition to LCAD. This establishes the boundary between architecture itself and the governance, standards, specification, explanation, and mapping that surround it.
Constituents
LCAD establishes the architectural constituents that belong to Lattice Core.
Relationships
LCAD establishes the architectural relationships among those constituents.
Responsibilities
LCAD establishes architectural responsibilities and their placement within Lattice Core.
Boundaries
LCAD establishes the boundaries required to distinguish architectural responsibilities and domains.
Invariants & Primitives
LCAD establishes the invariants and primitives that belong to the architecture.
Canonical Layers
LCAD establishes the canonical layer architecture and the architecture-level conditions associated with it.
Scope Without Premature Definition
These categories identify the kinds of architectural material for which LCAD is authoritative. This public record does not independently define their detailed contents while reconstruction and verification of the architecture are in progress.
Seven-Layer Architecture
Lattice Core is a seven-layer substrate architecture. The canonical layer identities remain part of the established architectural structure, while their complete authoritative definition belongs to LCAD.
Layer 1 — WAL: Web Attestation Layer
Layer 2 — ITL: Identity and Trust Layer
Layer 3 — LSL: Lattice Semantic Layer
Layer 4 — LW: Lattice Web
Layer 5 — LP: Lattice Protocol
Layer 6 — SEL: Safety Evaluation Layer
Layer 7 — LPL: Lattice Personal Ledger
This record identifies the canonical layer structure without attempting to reproduce or pre-empt the architectural definitions being verified for LCAD.
Architecture & Governance
LCAD Establishes Architecture
LCAD controls questions of architectural definition. It establishes what Lattice Core is architecturally and provides the architectural basis from which dependent canonical material derives.
Governance does not replace that architectural authority merely because architecture is subject to governed maintenance and change.
LCGD Governs Change
LCGD establishes the governance framework and the conditions under which LCAD and the wider canonical corpus may be maintained and changed.
Governance may therefore govern architectural change without becoming the source of the architectural proposition being changed.
Downstream Derivation
Standards and detailed specifications derive from the architecture. That derivation allows them to formalise, constrain, and specify what LCAD establishes without becoming independent architectural sources.
LCStD — Standards & Conformance
LCStD derives normative standards and conformance requirements from LCAD. It makes architectural requirements testable and normatively precise.
LCStD cannot introduce architecture absent from LCAD, redefine architectural propositions, or silently repair an architectural gap.
LCSpD — Detailed Specification
LCSpD provides detailed technical and functional specification derived from LCAD and LCStD.
It supplies detail within established architecture and standards rather than creating or redefining either.
No Downstream Repair of Architecture
If standards or specification work reveals that an architectural proposition is missing, the architecture must be addressed in LCAD through the applicable governance process. The missing proposition cannot become canonical architecture merely by being inserted downstream.
Relationship to the Canonical Corpus
LCAD is one of five substantive canonical documents. Its architectural authority operates within the governance framework established by LCGD and provides the architectural source from which standards and detailed specifications derive. LCED explains the corpus, while LCAAD maps it.
LCGD
Governance
Governs authority, stewardship, lifecycle, change conditions, and maintenance of the canonical corpus.
LCAD
Architecture
Establishes the architecture of Lattice Core and controls questions of architectural definition.
Current record
LCStD
Standards & Conformance
Formalises normative standards and conformance requirements derived from LCAD without redefining the architecture.
LCSpD
Detailed Specification
Expresses detailed technical and functional specification derived from LCAD and LCStD without redefining either.
LCED
Explanation
Explains and interprets the canonical system without acquiring governance, architectural, standards, or specification authority.
LCAAD
Architecture Atlas & Corpus Map
Maps canonical subjects, document relationships, and traceability without substantive authority over the material it maps.
Authority Boundaries
LCAD May Define
Architectural constituents, relationships, responsibilities, boundaries, invariants, primitives, canonical layers, and architecture-level conditions.
LCAD Does Not Govern Change
Governance authority, stewardship, document lifecycle, and the framework through which canonical change occurs belong to LCGD.
LCAD Does Not Replace Standards
Normative standards and conformance requirements derived from the architecture belong to LCStD.
LCAD Does Not Replace Detailed Specification
Detailed technical and functional specification derived from architecture and standards belongs to LCSpD.
Architectural Authority Remains Explicit
Related documents may quote, summarise, interpret, formalise, or specify material derived from LCAD where their own roles require it. Doing so does not transfer architectural authority away from LCAD.
Publication Status
Reconstruction & Verification
LCAD is being reconstructed and verified against the source architecture before public canonical release.
This process is intended to ensure that the architecture is complete at architectural level, that authority boundaries are preserved, and that downstream documentation derives from the verified architecture rather than becoming a source from which missing architecture is reconstructed.
What This Record Establishes
This record establishes LCAD's identity, architectural authority domain, and relationship to the canonical documentation framework.
It does not constitute publication of the reconstructed LCAD and should not be used as a substitute for architectural propositions that remain under verification.
Explore Lattice Core
Foundation Overview
The Foundation provides an institutional orientation to Lattice Core, its canonical documentation framework, and the boundary between architectural definition and governance.
Public Architecture Surface
The dedicated Lattice Core website provides the public architecture surface for exploration of the seven-layer architecture and its established concepts.
Public explanatory material supports navigation and understanding but does not replace LCAD as the controlling architectural source.