{
  "instrument": {
    "name": "The PID Erosion Observatory",
    "axn": "AXN:0421.EMPIRICAL.\ud83c\udfad\ud83d\udcd0\ud83d\udc1d\ud83c\udfaa\ud83c\udff7\ufe0f\ud83c\udf87",
    "deposit": "https://alexanarch.org/s/records/1045/",
    "code": "EA-EROSION-01",
    "surface": "https://persistentidentifiers.org/"
  },
  "canonical_registry": "https://www.alexanarch.org/",
  "sync_note": "This manifest enumerates the cumulative datasets associated with the EA-EROSION-01 instrument. Some datasets are stored canonically at alexanarch.org and referenced here; others have local mirror copies under /datasets/<name>/ for offline durability. Mirrors are pulled from alexanarch via datasets/sync-from-alexanarch.sh. The canonical location is always the authoritative version.",
  "generated_at": "2026-07-22T05:57:00Z",
  "datasets": [
    {
      "sovereign_id": "EA-EROSION-01-EPOCHS",
      "title": "PID Erosion Observatory \u2014 Epoch Captures (DC/FC/ZD/XR/ZD-A lanes)",
      "governing_deposit": "https://alexanarch.org/s/records/1045/",
      "canonical_location": "https://www.alexanarch.org/data/",
      "local_mirror": null,
      "description": "Cumulative epoch captures across five lanes: DC (registry-wide census), FC (founding-case), ZD (Zenodo deletion snapshots), XR (cross-registry propagation), ZD-A (deletion-classifier audits). Sixteen epoch records to date, each with its own JSON. Canonical URLs enumerated in the epochs table at persistentidentifiers.org/#sec-epochs.",
      "epochs": [
        "DC-E0 (2026-07-11)",
        "FC-E1 (2026-06-22)",
        "FC-E2 (2026-07-03)",
        "FC-E3 (2026-07-11)",
        "ZD-S1 (2026-06-07)",
        "ZD-S2 (2026-07-12)",
        "XR-E1 (2026-07-12)",
        "XR-E2 (2026-07-12)",
        "ZD-A1 (2026-07-12)",
        "ZD-A2 (2026-07-12)",
        "ZD-A3 (2026-07-12)",
        "ZD-A4 (2026-07-12)",
        "ZD-A5 (2026-07-12)",
        "ZD-A6 (2026-07-12)"
      ]
    },
    {
      "sovereign_id": "ZENODO-DELETION-LEDGER",
      "title": "Zenodo Deletion Ledger \u2014 CHA-Cohort Extraction + Full Exports",
      "governing_deposit": "https://alexanarch.org/s/records/1045/",
      "canonical_location": "https://www.alexanarch.org/data/",
      "local_mirror": "/datasets/../data/zenodo-deletion-ledger/",
      "description": "The two Zenodo bulk deletion exports (2026-06-07 and 2026-07-10) plus the CHA-cohort extraction (1,136 CHA rows from the June 19 event) and the tombstone census (2,005 API tombstones for the CHA event). Includes the raw gzipped CSVs, per-record tombstone JSON, and the tombstone-mirror captures. This is the raw substrate the audit datasets are derived from.",
      "files": [
        "PROVENANCE.md",
        "cha-kill-ledger-20260619.csv",
        "deleted-20260607.csv.gz",
        "deleted-head-20260710.csv.gz",
        "cha-remediation-lane.json",
        "cha-untracked-dead-dois.json",
        "tombstones/tombstone-api.jsonl",
        "tombstones/tombstone-mirror.jsonl",
        "tombstones/raw-tombstone-pages-20260712.tar.gz",
        "snapshots/"
      ]
    },
    {
      "sovereign_id": "EROSION-EMPIRICAL-AUDIT-01",
      "title": "Provenance Erasure at Outcome Level \u2014 33-Day Set-Comparison Test",
      "governing_deposit": "PENDING (candidate for mint at alexanarch as EA-EROSION-EMPIRICAL-01 v0.1)",
      "canonical_location": "https://www.alexanarch.org/datasets/erosion-empirical-audit-01/",
      "local_mirror": "/datasets/erosion-empirical-audit-01/",
      "description": "Companion datasets for EA-EROSION-EMPIRICAL-01 v0.1. Set-comparison test of Zenodo's classifier as accrual-sorting apparatus, following NEGSHAPE-01 (AXN:0444, #1075) citation discipline. Empirical confirmation of Provenance Debt (AXN:03B7, #939) \u00a73 at outcome level: ~30x differential in survival between institutional and independent AI-augmented composition. Sovereign identifiers for the two Zenodo exports, the Wu withdrawal cascade, and 15 terminated-independent cascades enumerated.",
      "files": [
        "contingency-matrix.json",
        "wu-restoration-verification.json",
        "terminated-cohort-citations.json",
        "alive-side-control.json",
        "REJECTED-LEDGER-EMPTY.md",
        "generate_audit.py",
        "MANIFEST.json"
      ]
    },
    {
      "sovereign_id": "NEGSHAPE-DELETION-BIBLIOGRAPHY",
      "title": "The Negative Shape of the Work \u2014 Deletion Bibliography & Bibliographic Matrix",
      "governing_deposit": "https://alexanarch.org/s/records/1075/",
      "canonical_location": "https://www.alexanarch.org/datasets/negshape-deletion-bibliography/",
      "local_mirror": null,
      "note": "referenced only; not locally mirrored at PEO. Canonical is the primary access point.",
      "description": "Appendix A + B of EA-NEGSHAPE-01 v0.2 (AXN:0444, #1075). 1,834 identifier entries enumerated; 1,621 membership-confirmed; 6,484 formal citations rendered across four formats; container-object citation for CHA-DELETION-CORPUS-20260619; rejected-candidate ledger (68 entries). Establishes the citation discipline this observatory's audit datasets follow.",
      "files": [
        "EA-NEGSHAPE-01_v0.2_AXN-0444.md",
        "deletion-bibliography.csv (1.3 MB)",
        "deletion-bibliography.json (5.0 MB)",
        "adversarial-citations.csv (2.2 MB)",
        "adversarial-citations.json (4.2 MB)",
        "SAMPLE-{APA,MLA,CHICAGO,BIBTEX}.md",
        "SAMPLE-INCONTAINER-{APA,MLA,CHICAGO,BIBTEX}.md",
        "deletion-container-object.md",
        "MANIFEST.json"
      ]
    },
    {
      "sovereign_id": "PEO-CASE-001-FLORENCE-FUP-T0",
      "title": "PEO Case 001 \u2014 T0 Enumeration of the Firenze crui.unifi Corpus (14,284 DOIs)",
      "governing_deposit": "https://alexanarch.org/s/records/1408/",
      "canonical_location": "https://www.alexanarch.org/datasets/peo-case-001-florence-fup/",
      "local_mirror": "/datasets/peo-case-001-florence-fup/",
      "description": "Recovery map for the 14,284 unique DataCite DOIs formerly registered under client crui.unifi (Firenze University Press, prefix 10.13128) and abandoned by the 2026-07-16 registration-agency migration event that dead-ended the corpus at fupress.net/inactive-doi/. Enumerated from the DataCite Public Data File 2025 t0 snapshot (2026-01-06T20:11:59Z). Case 001 tier-2 enumeration output; reconciles with tier-1 census figures at +1 (state transition) and +2 (registered-state DOIs unsurfaced by client-count APIs). Two malformed double-prefix DOIs preserved unaltered.",
      "files": [
        "MANIFEST.json",
        "enumeration.tsv",
        "t0-summary.json",
        "T0-ENUMERATION.md",
        "README.md"
      ]
    }
  ],
  "sync_protocol": {
    "canonical_authority": "alexanarch.org",
    "mirror_directive": "For every dataset with a `local_mirror` path, the mirror copies the canonical files verbatim. Mirrors are refreshed by executing datasets/sync-from-alexanarch.sh from the PEO repo root. The script uses curl against alexanarch.org's static endpoints and writes into the appropriate /datasets/<name>/ directory; sha256 is verified against the manifest at time of pull.",
    "on_conflict": "If canonical and mirror diverge, canonical always wins. Any local edit to a mirror is treated as a merge conflict requiring resolution at the canonical source, not at the mirror.",
    "cadence": "Manual for now. A GitHub Action on the PEO repo can be scheduled to run sync-from-alexanarch.sh nightly and commit changes on drift; not yet wired."
  }
}