A translation is only as good as its source discipline. Before any modeling, the walkthrough pins two things: the exact document being translated, and the exact toolchain that will evaluate the model. Everything downstream cites one or the other.
1The toolchain¶
The model is evaluated by a pinned OpenSysML binary Open-MBEE, 2026, fetched and verified against the release’s published checksums. A different binary is a different evaluator; the pin is what makes “the specification is satisfied” a reproducible claim rather than a report about somebody’s laptop.
import sys; sys.path[:0] = [".", ".."] # the repo root, from either cwd
import exhibits
exhibits.show_toolchain()pinned toolchain present, checksum-verified: True
sysml v0.4.3
Commit: 99e02003c9c49358828b1c491a75de61745646ce
Build time: 2026-09-02_19:25:24
Go version: go1.25.14
2The snapshot¶
Every definition and every gate in this walkthrough traces to one content-addressed snapshot of the whitepaper Oliphant, 2026. The file’s name is its own sha256, the RDF declares that hash, and the cell below recomputes it from the bytes. If the document and the declaration ever drift, this page says so.
exhibits.check_pinned_source()snapshot file : 5dabf2bec9cde59e5cc5bfa38eb08d3cd536daf20a6e6d7e815d76cd401dbe41.pdf
sha256(file) : 5dabf2bec9cde59e5cc5bfa38eb08d3cd536daf20a6e6d7e815d76cd401dbe41
declared hash : 5dabf2bec9cde59e5cc5bfa38eb08d3cd536daf20a6e6d7e815d76cd401dbe41
match : True
3The vocabulary, verbatim¶
A Cog is a discrete, AI-powered worker. It is the atomic unit of AI work within the system.
Oliphant, 2026, §4.4
That sentence is not paraphrased above: it is quoted. The same is true inside the substrate. Each concept the model relies on (Op, Cog, Frame, Guard, Gate, Track, and more) is a SKOS concept Miles & Bechhofer, 2009 whose definition is lifted exactly from the pinned text, with a section locator. The cell below re-checks every definition against the PDF itself; an invented or paraphrased definition would be flagged in the Checked column.
This is the first show-not-tell moment of the walkthrough: in prose, a glossary is a promise. Here, being verbatim is a checked property of the artifact.
exhibits.vocabulary_table()- Open-MBEE. (2026). OpenSysML v0.4.3. GitHub release, pinned by checksum in toolchain/get-sysml.sh. https://github.com/Open-MBEE/OpenSysML
- Oliphant, T. (2026). The Distributed AI Economy: Intelligence Hubs, Frames, Cogs, Ops, and the Accountability Plane [Techreport]. OpenTeams.
- Miles, A., & Bechhofer, S. (2009). SKOS Simple Knowledge Organization System Reference. W3C Recommendation. https://www.w3.org/TR/skos-reference/