The Principia Machina/Diagrams/04 CAC check flow

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The specification Contents: parts, tables, diagrams TPS 0.5.0 (declared 2026-10-03, revision 8; machine-optimized text) Decisions (the foundations record, one line each)

Structural diagram 4 of 13. Part of the TPM hub.

• KIND: process
• LANGUAGE: Mermaid
• GENERATED FROM: static, TPS 4.2 check list, 4.1.3
• STATUS: hand-authored at TPS 0.1.0; checked against TPS 0.3.0 on 2026-09-28: owed a redraw (not drawn: the final pass, with T3, IC2's disposition and the structure check with its label, 4.2 rows 66 and 70); superseded by TPX at its first build
• SOURCE SHA-256: 5c85e0992f4d7e16b255b0e6c8b764367c1457c79229169bfc757e82e92075f4

Rendered live from the source, which is the text equivalent and is shown under the drawing. The key to the shapes is in the panel.

Source (the text equivalent; Mermaid)

%% 04 CAC check flow. process/Mermaid flow. Static, TPS 4.2, 4.1.3.
flowchart TD
  A[zone checks T1-T6, isomorphism, SR9] --> B[four digests, row 2]
  B --> C[prefix unique across TPM, row 14]
  C --> D[assumptions atomic, row 23]
  D --> E[regime assigned L or M, row 19]
  E --> F[records checked vs master, TPS 4.1.2]
  F --> G[SR3 to SR6 tests, rows 20 to 24]
  G -- all pass --> H[(candidate certificate, TPS 5.5.3)]
  G -- strike --> I[(WITHDRAWAL record, TPS 4.6.1)]
  G -- equal d, N_x, or gold standard --> J[audit block ends in a decision item]
  A -- rejected component --> K[/returned to the author, TPS 5.5.2/]

  classDef task fill:#eaecf0,stroke:#a2a9b1,color:#202122
  classDef human fill:#eaf3ff,stroke:#36c,color:#202122
  classDef data fill:#fef6e7,stroke:#ac6600,color:#202122
  classDef bad fill:#fee7e6,stroke:#d33,color:#202122
  classDef good fill:#d5fdf4,stroke:#14866d,color:#202122
  class A,B,C,D,E,F,G,J task
  class K human
  class H good
  class I bad

Text equivalent

At certification the congruence and completeness audit (CAC) runs the zone checks, the kernel tests T1-T6 and the isomorphism checks, as each zone is entered (4.2 rows 34, 35, 17, 18), the digests (row 2), prefix uniqueness (row 14), atomicity of assumptions (row 23) and regime assignment (row 19), then checks every record against the register and the master record (4.1.2) and applies SR3 to SR6 of the strike rule (rows 20, 21, 22, 24). At the final pass, not drawn, T3 runs over the constraints and over laws to the ground fragment, IC2_POLICY disposes of any untied degree of freedom (DOF), and, with STRUCTURE_CHECK ON, the structure check lists its findings for the declaring authority and gives the label the certificate carries on its STRUCTURE LINE; it refuses nothing (2.2.17, 2.2.20, 5.5.2, 5.5.3; rows 66, 70). All passing yields the candidate certificate (5.5.3); a contradiction yields a withdrawal record (4.6.1); equal distance, a reached threshold N_x of the Measure Set or a gold-standard case opens an audit block ending in a decision item (4.1.5). A rejected component returns to its author (5.5.2).