🪢 SZL Holdings Data Lake (szl-lake)

A public, signed, diligence-defensible corpus of governance provenance. Every governed action in the SZL substrate emits an ECDSA P-256 DSSE-signed Khipu receipt onto a hash-linked Merkle DAG. This dataset aggregates those receipts together with the formal-verification doctrine snapshots, the Zenodo paper record, SBOM pointers, and compliance attestations — so a reviewer can verify the claims end-to-end.

Doctrine v11 LOCKED · 749 declarations / 14 unique axioms / 163 tracked sorries · Λ = Conjecture 1 (open, not a theorem).

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What's inside

SZLHOLDINGS/szl-lake/
├── README.md                         # this card
├── lake_index.json                   # master index — every file + sha256 + receipt counts
├── khipu/                            # live signed Khipu receipts, one parquet per organ
│   ├── amaru_receipts.parquet        # 14 real DSSE-signed tick receipts
│   ├── sentra_receipts.parquet       # 2 real signed verdict receipts
│   ├── a11oy_receipts.parquet        # live chain (currently empty — honest)
│   ├── rosie_receipts.parquet        # live chain (currently empty — honest)
│   └── killinchu_receipts.parquet    # live chain (endpoint not yet exposed — honest)
├── papers/manifest.json              # 8 papers + concept/umbrella/version DOIs (links to Zenodo; no PDF duplication)
├── trajectories/                     # multi-turn agent sessions (schema published; seeding pending)
├── sboms/manifest.json               # CycloneDX + SPDX pointers (CI artifacts, per repo)
├── doctrine/                         # periodic 749/14/163 state snapshots + cosign fingerprints
├── attestations/                     # Section 889 · CMMC L1 self-attest · SLSA level
└── keys/                             # cosign P-256 public keys (org + 5 organs) + MANIFEST

Receipt schema (khipu/*.parquet)

column	meaning
receipt_id / actual_hash	SHA-256 of the committed receipt (Khipu chain node)
predicted_hash	parent / predicted chain head (receipts.in ≡ receipts.out)
organ · kind · index	emitting organ, receipt kind (tick/verdict), chain index
lambda · lambda_pass	13-axis geometric-mean Λ score and pass flag
lutar_anchor	lutar-lean kernel SHA the runtime pins (c7c0ba17)
decl · axioms · sorries	doctrine numbers carried in the receipt payload (749/14/163)
dsse_sig · dsse_keyid · dsse_pae_sha256 · dsse_signed	DSSE signature material (ECDSA-P256-SHA256)
verify_key_url	where to fetch the cosign public key

No PII. Receipts carry only hashes, axis scores, organ/kind, doctrine numbers, and timestamps. A PII scan (email/SSN/phone patterns) ran clean before publication.

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How to verify a receipt with cosign

Each receipt is signed with an ECDSA P-256 key (keyid: szlholdings-cosign, or per-organ keys under keys/).

curl -sL https://huggingface.co/datasets/SZLHOLDINGS/szl-lake/resolve/main/keys/org-cosign.pub -o cosign.pub
cosign verify-blob --key cosign.pub --signature <dsse_sig> <receipt-payload>
curl https://szlholdings-amaru.hf.space/khipu/pubkey?keyid=amaru-cosign

Per-organ fingerprints (SHA-256 of the public key) are pinned in keys/MANIFEST.json and doctrine/v11_snapshot_20260602.json.

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Read it

import pyarrow.parquet as pq
t = pq.read_table("hf://datasets/SZLHOLDINGS/szl-lake/khipu/amaru_receipts.parquet")
print(t.to_pandas().head())

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Honesty notes (diligence-defensible)

• lake build status: the published main of szl-holdings/lutar-lean currently fails to compile at Lutar/KhipuConsensus.lean (unknown identifier 'Vector' under Mathlib v4.13.0; CI run 26786461244). The runtime organs nonetheless serve the locked 749/14/163 constant. The source-level count on main HEAD is 774 decl / 14 axioms / 161 noncomment sorries because it includes additive experimental modules excluded from the locked v11 baseline. See doctrine/v11_snapshot_20260602.json.
• Empty chains are shown as empty. Three organ chains have no receipts yet; their parquet files are valid but empty rather than padded with synthetic data.
• SBOMs & trajectories are pointer manifests where the corpus has not yet been seeded — the schemas are published so consumers can build against them today.

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Cite this

@dataset{szl_holdings_data_lake,
  title        = {SZL Holdings Data Lake},
  author       = {Lutar, Stephen Paul and {SZL Holdings}},
  year         = {2026},
  publisher    = {Hugging Face},
  doi          = {10.5281/zenodo.20434276},
  note         = {Concept DOI: 10.5281/zenodo.19944926. Doctrine v11 LOCKED 749/14/163.},
  url          = {https://huggingface.co/datasets/SZLHOLDINGS/szl-lake}
}

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_{🪢 Khipu chain · Lean 4 (Mathlib v4.13.0) · Sigstore Rekor · CC-BY-4.0 · Concept DOI 10.5281/zenodo.19944926 · Umbrella DOI 10.5281/zenodo.20434276 · Doctrine v11 LOCKED · 749 / 14 / 163 · Λ Conjecture 1 (open) · Signed-off-by: Yachay (CTO) · Co-Authored-By: Perplexity Computer Agent}