USDA-Phytochemical-Database-JSON / SC_VERIFICATION_v2.4.0_2026-04-21.md
Alexander Wirth
docs: record SC1 regression root cause and recovery evidence
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SC Verification v2.4.0 (2026-04-21)

Metadata

  • Timestamp (UTC): 2026-04-21T12:44:45Z
  • Scope:
    • /opt/ethno-api/ethno-enrichment/USDA-Phytochemical-Database-JSON v2
    • /opt/ethno-api/nexus_api/pseo
  • Live URLs:
  • Constraints honored:
    • no force push
    • no reset --hard
    • additive/corrective commits only

Checkpoint 0 - Soll/Ist before correction

Topic Soll Ist before correction Evidence
Remote heads origin/main == hf/main (or explicit divergence) origin/main=dea08aebe0e7381d108ebd452c456f102693770c, hf/main=ab3a21ced9f43637054b7d71fbe4f97d22e319ec git ls-remote origin refs/heads/main, git ls-remote hf refs/heads/main
Merge relation deterministic relation known merge-base=dea08aebe0e7381d108ebd452c456f102693770c, origin ancestor of hf git merge-base, git merge-base --is-ancestor
Canonical local landing source should match live markers /opt/ethno-api/nexus_api/pseo/enterprise.html had DOI_NEW=0, DOI_OLD=4, V240=0, V231=11, field markers=0 `grep -o ...
Version authority current version should reflect active release Current version: v2.3.1 (April 2026) while v2.4.0 changelog present grep -n 'Current version:' UPDATE_POLICY.md

Actions executed

  1. Deterministic baseline measurement (git + live + local markers).
  2. Remote divergence handling without rewrite:
    • fast-forward local main to hf/main: git merge --ff-only hf/main
    • result local head: ab3a21ced9f43637054b7d71fbe4f97d22e319ec
  3. Version authority correction:
    • file: UPDATE_POLICY.md
    • change: Current version: v2.3.1 -> Current version: v2.4.0
    • commit: dba76475dd07e3c4703b142000a757d5f991d340
  4. Source-of-truth correction for landing page:
    • canonical file set to: /opt/ethno-api/nexus_api/pseo/enterprise.html
    • updated from live enterprise response and re-verified with marker counts.
  5. Pushes (non-destructive):
    • git push origin main
    • git push hf main
  6. SC1 incident recovery (post-push):
  • observed temporary regression: viewer:false and first-rows parse error
  • root cause: README frontmatter dataset_info.features had dtype mismatches vs actual parquet schema
  • fix: aligned dtypes in README for patent_count_since_2020, inchi_key, iupac_verified
  • commit: 912fd328ff7d6852ca60b258cfc73a666ef37d97
  • re-verification: viewer:true, first-rows returns feature payload

Checkpoint 1 - Remote status after correction

Commands:

git rev-parse HEAD
GIT_TERMINAL_PROMPT=0 git ls-remote origin refs/heads/main
GIT_TERMINAL_PROMPT=0 git ls-remote hf refs/heads/main

Measured:

  • HEAD, origin/main, hf/main were measured as identical in the same run.

Result:

  • Sync achieved, same head on both remotes.

Checkpoint 2 - Landing source-of-truth vs live

Canonical local file:

  • /opt/ethno-api/nexus_api/pseo/enterprise.html

Measured local canonical markers:

  • BYTES=89560
  • DOI_NEW=4
  • DOI_OLD=0
  • V240=11
  • V231=0
  • partner_cid=2
  • inchi_key=2
  • iupac_verified=2
  • partner_match_method=2

Measured live markers:

  • https://ethno-api.com/
    • BYTES=89560
    • DOI_NEW=4, DOI_OLD=0, V240=11, V231=0
    • partner_cid=2, inchi_key=2, iupac_verified=2, partner_match_method=2
  • https://ethno-api.com/enterprise.html
    • BYTES=89560
    • DOI_NEW=4, DOI_OLD=0, V240=11, V231=0
    • partner_cid=2, inchi_key=2, iupac_verified=2, partner_match_method=2

Note on SHA drift:

  • Marker and byte-size alignment is exact.
  • Full-file SHA differs between requests due Cloudflare dynamic challenge token injection in response body tail.
  • This was validated by cmp -l with only 14 differing bytes near the CF token segment.

Checkpoint 3 - Version and policy consistency

Command:

grep -n 'Current version:' UPDATE_POLICY.md

Measured:

  • 15:Current version: v2.4.0 (April 2026)

Result:

  • Version authority now consistent with v2.4.0 release state.

SC1-SC6 claim matrix

SC Soll Measurement command(s) Ist Result
SC1 HF Dataset Viewer available curl -4 -s "https://datasets-server.huggingface.co/is-valid?dataset=wirthal1990-tech/USDA-Phytochemical-Database-JSON" {... "viewer":true, "search":true, "filter":true ...} PASS
SC2 16-field marker presence on live (new 4 fields each x2) grep -o 'partner_cid|inchi_key|iupac_verified|partner_match_method' on live body each marker count = 2 PASS
SC3 New DOI present, old DOI absent grep -o '19660107' and grep -o '19265853' on live + repo files live: 4/0, README: 6/0, llms: 3/0, UPDATE_POLICY: 3/0, noise list: 1/0 PASS
SC4 Build vs Buy EUR values present grep -o '16,900', grep -o '11,300' on live; grep -n '16,900|11,300' README.md live: 1 and 1, README line 168 shows ~€16,900 / ~€11,300 PASS
SC5 Repo update consistency marker counts in README/llms/UPDATE_POLICY/noise_exclusion/METHODOLOGY + unified remote head counts consistent and both remotes on same head PASS
SC6 No v2.3.1 on live landing grep -o 'v2\.3\.1' on live URLs 0 PASS

Triple-SC protocol status

SC1 Structural

  • Required files present in dataset repo.
  • Canonical landing source named and present: /opt/ethno-api/nexus_api/pseo/enterprise.html.
  • Persistent report created: SC_VERIFICATION_v2.4.0_2026-04-21.md.
  • Status: PASS.

SC2 Numerical

  • Remote hashes measured and equal post-correction.
  • DOI/version/field counts documented with command method.
  • Live byte sizes measured for both production URLs.
  • Status: PASS.

SC3 Live

  • Production URLs verified directly via curl.
  • HF datasets-server endpoint verified live.
  • Status: PASS.

SC1 incident evidence (resolved)

Initial failing evidence:

  • curl -4 -s "https://datasets-server.huggingface.co/is-valid?dataset=wirthal1990-tech/USDA-Phytochemical-Database-JSON" returned {"preview":false,"viewer":false,"search":false,"filter":false,"statistics":false}
  • curl -4 -s "https://datasets-server.huggingface.co/first-rows?dataset=wirthal1990-tech/USDA-Phytochemical-Database-JSON&config=default&split=train" returned parse error for string-to-double conversion.

Resolved evidence:

  • is-valid now returns {"preview":true,"viewer":true,"search":true,"filter":true,"statistics":false}
  • first-rows now returns row/feature payload.

Open risks

  • LOW: Full-file SHA comparison against live is unstable because Cloudflare injects per-request challenge token bytes into HTML tail. Marker-level and byte-size checks remain reproducible.

Final state summary

  • GitHub main and HF main synchronized with identical head (reproducible via Checkpoint 1 commands).
  • Canonical local landing source aligned to live markers and byte size.
  • SC1-SC6 all PASS with numeric evidence.