Candidate edition: Publication candidate prepared 2026-11-11 from the unchanged v0.3 research dossier at repository 7fc15ec249fba391018310ade811c5bd24e1099f. This is a proposed editorial successor of that dossier, not an adopted publication or a new dossier identity. Original dossier SHA-256 9db937d23f6e6f599cb4e58453bdac6a72adcb391e3dac72d3b123a4f4718d4e; 60,673 bytes. Original title/version, source handles and uploaded-input lineage remain below. Candidate scope: Shared-reader grammar and bounded analysis, using the existing 6–7 November retained-source readings only. No fresh retrieval, literature search, custody readback, identity assignment, source admission, route registration or deployment occurred. Source inventories preserve unresolved research pointers; proposed lead and qualified claims identify their narrower basis.

Status: PUBLICATION CANDIDATE / RESEARCH-ONLY UNTIL OWNER DISPOSITION / LOCAL SOURCE BYTES PARTLY INSPECTED / NO GOVERNED CAPTURE
Subject: LK-99 — the July 2023 preprint claim of room-temperature, ambient-pressure superconductivity in copper-substituted lead apatite, the replication and explanation record that followed, the Korean verification committee's conclusion, and the successor claim (PCPOSOS)
Scope: source inventory, authority/posture, record-contradiction map, provisional five-claim matrix, capture hazards, reverse-source candidates
Research date: 2026-11-06
Supersedes: lk-99-demo-corpus-dossier-v0-2 (2026-11-06), which superseded v0.1. This is a corrected copy of the uploaded v0.3, reconciled on 2026-11-06 with the completed local source pull. It preserves the separate original papers, correction notices and independent studies; corrects the historical cutoff, sample-access scope and temperature formulations; and updates the Guo, Zhu, KSSC and version-reading states below. The original uploaded v0.3 remains the preserved input, SHA-256 784650cd43db1cbac33a63ca9c2026a67eeab51189020fc657ecf823547c2a1f.
Drafting basis: the initial inventory used web readings on the research date. This reconciliation also uses the retained bodies and SHA-256 readbacks in the 2026-11-06 source pull (SOURCE_MANIFEST.json, downloads/<source_key>.json and reviews/science-byte-inspection.json). Local-reading notes below identify the inspected representations; they are editorial provenance, not governed source identities or accepted support. The pull emitted no native Acquisition CaptureReceipt. Unretained or unresolved representations remain marked as such; VERIFY means the named check is still open.
Explicit non-claims: This dossier creates no CaptureReceipt, SourceEdition, SRS receipt, custody, admission, final standing, adopted article prose, or canonical Counterpedia identity. It decides nothing about whether any material is a superconductor.

A. SUBJECT / DISAMBIGUATION

Common name

LK-99

Exact scope

The material Pb₁₀₋ₓCuₓ(PO₄)₆O (0.9 < x < 1.1), named LK-99 by its developers, as the subject of an ambient-pressure superconductivity claim. The selected reading compares the April 2023 Korean-journal article and its two corrections, the two July preprints and their selected versions, independent half-levitation and transport studies, independently grown single crystals, and the December committee-report candidate at its unresolved-origin scope.

The principal question is what each named record claims or measures in its specified specimens. The April abstract's above-97 °C wording, the body's 400 K discussion, and the selected July preprints' temperature formulations remain separate attributed passages. An independent preparation can inform the general material claim without directly measuring a developer's specimen.

The full original inventory remains available, including research pointers about news coverage, other groups, theoretical work and the later PCPOSOS claim. Unretained pointers do not become verified passages by appearing here. This candidate's proposed lead excludes them and the origin-unresolved committee candidate. It is neither an exhaustive literature review through November 2026 nor an adjudication of every possible material or successor claim.

Important identifiers / terms

• LK-99 (Lee–Kim, 1999)

• Pb₁₀₋ₓCuₓ(PO₄)₆O; Pb₉Cu(PO₄)₆O; copper-substituted lead apatite

• Quantum Energy Research Centre (Q-Centre), Seoul

• arXiv:2307.12008 (three authors) and arXiv:2307.12037 (six authors)

• Journal of the Korean Crystal Growth and Crystal Technology 33(2) 61–70 (2023), with corrigenda in 33(3) and 33(4)

• Cu₂S (copper(I) sulfide) impurity phase; first-order transition near 385 K

• "half levitation" / "partial levitation"

• Meissner effect; zero resistance; critical temperature (Tc)

• APL Materials 11, 101128 (2023), single-crystal study

• Korean Society of Superconductivity and Cryogenics (KSSC) LK-99 Verification Committee; white paper, 13 December 2023

• PCPOSOS, Pb₁₀₋ₓCuₓ(P(O₁₋ySy)₄)₆O₁₋zSz; APS March Meeting 2024 abstract A16.00002

Naming / semantic traps

1. "The LK-99 paper" is at least three documents. A Korean-journal article (April 2023, six authors, later corrected twice), a three-author arXiv preprint (2307.12008, one version) and a six-author arXiv preprint (2307.12037, revised). They differ in author set, content and status. A statement about "the paper" must say which.

2. Posting a preprint is not peer-reviewed journal publication. Both arXiv submissions are unrefereed postings. The one refereed article in the developers' own record is the Korean-journal paper, whose authors later published an erratum and a corrigendum, the second replacing a figure of the four-probe measurement. Independent studies that began as preprints later appeared in journals (LK-S06, LK-S07, LK-S08, LK-S18); a historical reading selects the publication state at its date.

3. A version is not the paper. arXiv:2307.12037 was revised after upload; a citation without a version number does not identify the bytes read.

4. A news item and a research paper have different roles. The original inventory classifies LK-S09 as Nature news dated 16 August 2023, not a research paper; its body was not retained in this pull. The retained independent-study evidence used here is identified directly in LK-S06–S08. Guo’s publisher metadata dates its journal version to 15 August.

5. A replication result, a refutation claim and a proposed mechanism have different scopes. Replication reports concern particular samples made by particular routes. The single-crystal study reports no superconductivity in its phase-pure crystals and discusses impurity explanations; it does not directly measure the developers' specimens (LK-S08). The downloaded December white-paper candidate describes the committee's own unsuccessful requests for those specimens (LK-S11; publisher origin unresolved). Different specimens limit a study's direct reach but do not make converging negative measurements and alternative explanations irrelevant to the general claim. A claim of refutation must state the proposition and basis, rather than treating the words as interchangeable.

6. "Half levitation" does not by itself establish the Meissner effect. Guo and colleagues reproduced half levitation in small fragments and attributed it to soft ferromagnetism and shape anisotropy (LK-S06). That measured alternative explains why the observed movement alone does not establish superconductivity.

7. The resistivity drop near 385 K is a Cu₂S transition in the measured samples, not a superconducting transition. That is the attributed finding of the retained Beijing IOP work; it concerns samples containing Cu₂S, not a hypothetical pure phase. The unretained news representation is not needed as its measurement basis.

8. The committee's evidential conclusion is not a finding of fraud. The downloaded white-paper candidate has now been read. It records a strong negative conclusion from the original data and replication studies, alongside the committee's inability to obtain developers' specimens for cross-measurement (LK-S11, physical pp. 3–4, 101, 104). Its publisher origin remains unresolved. Those passages do not establish deceptive intent, and committee non-access is not a worldwide finding that nobody else received samples.

9. PCPOSOS remains a separately qualified research pointer. The prior inventory describes a sulfur-containing nominal composition and a citation to the LK-99 preprint under LK-S12. The APS request returned 403, and the related press representations were not retained. This candidate neither treats that pointer as independent confirmation of LK-99 nor newly verifies its composition, authorship or presentation details.

10. A theory result is not automatically experimental confirmation. The original inventory preserves theoretical-work pointers under LK-S15 and related reporting under LK-S09. Their unretained representations are excluded from this candidate’s affirmative lead and qualified measurement claims; no new abstract or structural-result verification is asserted.

Temporal bounds

The original documentary sequence begins with the Korean-journal article published 30 April 2023 and the two preprints submitted 22 July 2023. The selected independent-study sequence runs through 2023; source retrieval and the recorded readings occurred on 6–7 November 2026. Preparation on 11 November adds no new observation date to those sources.

Historical checkpoint: 16 August 2023. The selected record then includes the original article, June reference erratum, versions of the original preprints available by that date, Guo's journal metadata/abstract published 15 August, Zhu v1 of 8 August, Puphal v1 of 11 August, and the committee's 2 August formation statement. These are identified later-held representations, not proof of a contemporaneous August capture.

Dated continuation. Puphal v2 is dated 23 August; the Figure 6(a) corrigendum is dated 31 August; the Puphal journal citation is October, with its body unavailable in the pull; Zhu's inspected corrected proof carries 24 November publication and a December issue date; the committee PDF candidate carries a 13 December cover date with publisher origin unresolved. None is placed inside the earlier checkpoint.

The original inventory's March 2024 PCPOSOS pointer remains separate and unretained. No claim that all later literature lacks independent confirmation is made by this candidate. That would require a separately scoped, current search, which this preparation does not perform.

Analysis

The original papers, corrections and independent studies answer different questions. The original authors' reports establish what was claimed in named documents. Guo's publisher abstract concerns half levitation in the investigators' synthetic samples; Zhu's retained preprint and proof concern a resistance change in Cu₂S-containing specimens. Puphal's retained preprints concern independently grown phase-pure crystals. The last three are evidence bearing on reproducibility and properties of the claimed material, with limits determined by their sample preparation and measurement scope.

An observed movement near a magnet is not automatically a Meissner-effect measurement, and a large resistance drop is not automatically zero resistivity. Guo's ferromagnetic/shape explanation and Zhu's structural-transition explanation concern different observations. Keeping them separate makes the negative findings intelligible without implying that one impurity explanation resolves every reported feature of LK-99.

The chronology is equally important. Peer review does not erase subsequent corrections, and a later journal edition is not an additional independent replication. The origin-unresolved committee PDF can be read as a candidate document while its publisher identity remains unverified; its account of the committee's own failed specimen requests is not a worldwide sample-access census. The selected record supports a bounded explanation of claims, tests and limits, without an undated verdict or a finding of fraud.

B. SOURCE INVENTORY

LK-S01 — Korean-journal article (the refereed original)

Exact title: Consideration for the development of room-temperature ambient-pressure superconductor (LK-99)
Issuer: Journal of the Korean Crystal Growth and Crystal Technology (Korean Association of Crystal Growth)
Authors: Sukbae Lee, Jihoon Kim, Sungyeon Im, SooMin An, Young-Wan Kwon, Keun Ho Auh
Citation: Vol. 33, No. 2 (2023), pp. 61–70
DOI: 10.6111/JKCGCT.2023.33.2.061
Landing: https://koreascience.or.kr/article/JAKO202315638176796.page
Exact PDF inspected: https://journal.kci.go.kr/jkcgct/archive/articlePdf?artiId=ART002955269

Format: PDF (Korean with English abstract)
Authority / posture: refereed article in a specialist society journal; the refereed original-claim article in this selected inventory. The retained publisher record gives received 2023-03-31, accepted 2023-04-18 and published 2023-04-30. Its English abstract claims a critical temperature above 97 °C; the July preprint abstracts use at-or-above/above-400 K wording. The original body also mentions 400 K on physical p. 7. Attribute the abstract formulations to their locations; neither the nested lower bounds nor the different wording alone establishes a contradiction.

Local research reading: lk99-original-journal-pdf, SHA-256 f08fa3e94b0b456a51854fa61546a68e44ca5415aabfe9162d7b29e142ec6188 (10-page PDF; abstract p. 1, earlier Figure 6(a) and 400 K discussion p. 7). Both this PDF and the publisher HTML were retained and inspected on 2026-11-06. The original figure remains visible in these bytes; read it with LK-S02b.

May support

• the claim as first published and the April 2023 date;

• the six-author set at first publication;

• the authors' own later corrections (see LK-S02a/b).

Cannot establish

• superconductivity;

• that the arXiv preprints reproduce this article's content exactly (the six-author preprint added material; see LK-S04).

Captureability: HIGH
Priority: P0

LK-S02a — Erratum to the Korean-journal article (reference correction)

Exact title: 정오표 : 상온상압 초전도체(LK-99) 개발을 위한 고찰 (Erratum)
Issuer: Journal of the Korean Crystal Growth and Crystal Technology
Citation: Vol. 33, No. 3 (2023), p. 124, DOI 10.6111/JKCGCT.2023.33.3.124; published 30 June 2023 (confirmed in the retained publisher record)
Landing inspected: https://journal.kci.go.kr/jkcgct/archive/articleView?artiId=ART002971333
Exact PDF inspected: https://journal.kci.go.kr/jkcgct/archive/articlePdf?artiId=ART002971333
Local research reading: lk99-june-erratum-pdf, SHA-256 ef7705d01c84b45eedda4842af8fe9409642fa6883de8f104f8fcdd7a2ba5492 (one page); publisher HTML and PDF retained and read on 2026-11-06.

Authority / posture: author-issued bibliographic correction: reference [44]'s journal name (J. Korean Chem. Soc. → J. Korean Ceram. Soc.). It changes no experimental content.

May support

• that the refereed record carries a bibliographic correction;

• the distinction between an erratum and a corrigendum.

Captureability: HIGH
Priority: P0

LK-S02b — Corrigendum to the Korean-journal article (Figure 6(a) replaced)

Exact title: 정오표 : 상온상압 초전도체(LK-99) 개발을 위한 고찰 (Corrigendum)
Issuer: Journal of the Korean Crystal Growth and Crystal Technology
Citation: Vol. 33, No. 4 (2023), p. 165; published 31 August 2023
Landing inspected: https://journal.kci.go.kr/jkcgct/archive/articleView?artiId=ART002989571
Exact PDF inspected: https://journal.kci.go.kr/jkcgct/archive/articlePdf?artiId=ART002989571
Local research reading: lk99-august-corrigendum-pdf, SHA-256 4ca4c38add1aaa4269478dce1b201b6f399fe56156c6d3cb1bd4c4fd6b7ded20 (one page); publisher HTML confirms 31 August 2023. The correction and original figure are separate retained records.

Authority / posture: author-issued correction of experimental presentation: the authors state that data under calculation for analysis had been mis-inserted into Figure 6(a) (four-probe measurement of transition temperature) and replace it with the measured raw data. It is a correction, not a retraction and not a finding of fraud.

May support

• that a measurement figure in the refereed original was replaced by its authors;

• the distinction between a correction and a retraction (no retraction located).

Counterpedia value A refereed edition can be superseded by its own corrigendum; "the published paper" has versions too.

Captureability: HIGH
Priority: P0

LK-S03 — Three-author arXiv preprint

Exact title: The First Room-Temperature Ambient-Pressure Superconductor
Issuer: arXiv (cond-mat.supr-con)
Authors: Sukbae Lee, Ji-Hoon Kim, Young-Wan Kwon
Identifier: arXiv:2307.12008, v1 submitted 22 Jul 2023 07:51 UTC (submitter: Young-Wan Kwon); no later version located
Landing: https://arxiv.org/abs/2307.12008
Exact PDF: https://arxiv.org/pdf/2307.12008v1
Local research reading: lk99-original-three-author-v1-pdf, SHA-256 a4e612fe48b473e3fc981ce419f597c79e2b9673e0633330bd8e8f326d38355c; PDF and version-specific listing retained and read on 2026-11-06.

Authority / posture: unrefereed preprint. Abstract asserts Tc ≥ 400 K, zero resistivity, critical current, critical field and the Meissner effect.

May support

• the wording and scope of the claim as made in this document;

• the three-author set and submitter identity;

• the public authorship dispute (see LK-S13), as the object of that dispute.

Cannot establish

• superconductivity;

• the developers' consensus position (a co-author publicly said this submission was made without permission).

Captureability: HIGH
Priority: P0

Publication-candidate retained-reading note: The existing 7 November retained readback identifies the v1 abstract on physical p. 1. It is an original author assertion, not independent confirmation.

LK-S04 — Six-author arXiv preprint

Exact title: Superconductor Pb10-xCux(PO4)6O showing levitation at room temperature and atmospheric pressure and mechanism
Issuer: arXiv (cond-mat.supr-con)
Authors: Sukbae Lee, Jihoon Kim, Hyun-Tak Kim, Sungyeon Im, SooMin An, Keun Ho Auh
Identifier: arXiv:2307.12037; v1 22 Jul 2023, v2 29 Jul 2023, v3 11 Aug 2023 (retained v3 submission history)
Landing: https://arxiv.org/abs/2307.12037
Exact PDFs inspected: https://arxiv.org/pdf/2307.12037v1 ; https://arxiv.org/pdf/2307.12037v2 ; https://arxiv.org/pdf/2307.12037v3

Local research reading: all three PDFs and https://arxiv.org/abs/2307.12037v3 were retained and read on 2026-11-06. Selected bytes:

• lk99-original-six-author-v1-pdf, SHA-256 99de5dd3c1c3b6ab79abf6699ce0140dc4dda6f993a5d1b56c589de6b27cd625.

• lk99-original-six-author-v2-pdf, SHA-256 1c1bd75f6e74f32dad120add3b1d06dd74b98413418d6885130deee3edae4c1e.

• lk99-original-six-author-v3-pdf, SHA-256 fc18156349d521f353783533789c754e974c61a64a606060690c6a73289caa0b.

Authority / posture: unrefereed preprint; submitted in parallel to APL Materials for review per contemporaneous reporting (outcome not located; VERIFY).

May support

• the levitation claim and the proposed mechanism as stated;

• the six-author set; the difference from LK-S03.

Cannot establish

• superconductivity;

• acceptance by any journal.

Captureability: HIGH
Priority: P0

Publication-candidate retained-reading note: The existing retained readback identifies v3 physical p. 11 as reporting the authors’ maximum Tc of 127 °C for heat-treated sample 1. This sample-specific assertion does not establish journal acceptance or general independent confirmation.

LK-S05 — Huazhong University replication (levitation)

Exact title: Successful growth and room temperature ambient-pressure magnetic levitation of LK-99
Issuer: arXiv
Authors: Hao Wu, Li Yang, Bichen Xiao, Haixin Chang
Identifier: arXiv:2308.01516 (August 2023)
Landing: https://arxiv.org/abs/2308.01516

Authority / posture: unrefereed replication preprint; reports synthesis and magnetic levitation at room temperature with a larger levitation angle than the original sample; does not report zero resistance.

May support

• that independent groups reproduced a levitation behavior;

• the distinction between levitation and a resistance measurement.

Captureability: HIGH
Priority: P1

Local research reading: This preprint body was not retained in the completed local pull; the inventory account remains based on the earlier web reading and needs exact-version verification for any selected display.

LK-S06 — Peking University (ferromagnetic half levitation)

Exact title: Ferromagnetic half levitation of LK-99-like synthetic samples
Issuer: arXiv
Authors: Kaizhen Guo, Yuan Li, Shuang Jia
Identifier: arXiv:2308.03110, v1 6 Aug 2023 13:34 UTC, v2 15 Aug 2023 08:12 UTC
Journal version: Science China Physics, Mechanics & Astronomy 66(10), 107411 (2023), DOI 10.1007/s11433-023-2201-9; the retained publisher page gives publication and version-of-record dates of 15 August 2023.
Landing: https://arxiv.org/abs/2308.03110 ; https://link.springer.com/article/10.1007/s11433-023-2201-9

Authority / posture: preprint with a refereed journal version published 15 August 2023, the earliest refereed negative study in this selected inventory. The publisher abstract reports half levitation in small fragments, attributes it to soft ferromagnetism and shape anisotropy, and reports neither a Meissner effect nor zero resistance in the studied samples. This journal state was already available at the 16 August checkpoint.

Local research reading: lk99-guo-journal-html, SHA-256 eca81f3ca5472138934d34745a329df2989d441c7076c80eb95a5a75e469f47e (publisher metadata and abstract, not subscription full text). The v1 and v2 preprint PDFs were also retained and read. A read publisher abstract is not a retained journal full text.

May support

• the ferromagnetic explanation of half levitation;

• the identification of Cu₂S alongside the apatite phase in synthesized samples;

• the authors' own limit: the precise chemical composition and physics of the ferromagnetic component remain open questions in their abstract.

Captureability: HIGH
Priority: P0

LK-S07 — Beijing IOP (Cu₂S first-order transition)

Preprint title: First order transition in Pb10-xCux(PO4)6O (0.9<x<1.1) containing Cu2S
Journal-proof title: First-order transition in LK-99 containing Cu2S
Issuers / representations: arXiv preprint; Matter corrected proof hosted by the Institute of Physics, Chinese Academy of Sciences
Authors: Shilin Zhu, Wei Wu, Zheng Li, Jianlin Luo
Identifier: arXiv:2308.04353v1, submitted 8 Aug 2023; journal DOI 10.1016/j.matt.2023.11.001
Preprint landing: https://arxiv.org/abs/2308.04353v1
Preprint PDF inspected: https://arxiv.org/pdf/2308.04353v1
Corrected-proof PDF inspected: https://www.iop.cas.cn/xwzx/kydt/202311/P020231128650554216959.pdf

Authority / posture: the August preprint is unrefereed. The later acquired journal file identifies itself as a corrected proof/article in press, carries a publication date of 24 November 2023 on physical p. 8, and has a cover plus article pages numbered 1–7. Its cover carries a December 6 issue date. The previously reported final citation, Matter 6(12), 4401–4407, remains VERIFY as the identity of a separately paginated representation; these retained bytes are not silently labeled that final version.

The preprint and corrected proof attribute a sharp resistance change in their Cu₂S-containing specimens to a structural phase transition near 385 K. They report a drop of three to four orders of magnitude in Cu₂S resistivity and distinguish that observation from zero resistivity. The proof's summary on physical p. 2 states the 385 K formulation; its cover and adjacent overview use approximately 400 K. Cite the passage as well as the representation. This is a transport explanation, not the separate explanation of half levitation in LK-S06.

Local research reading: lk99-zhu-v1-pdf, SHA-256 26a4e7547e5c7df690f3b0db4beca4b36a60f6986d6145ff3ba4a41d6321f7e7; lk99-zhu-journal-pdf, SHA-256 a72fb1b41146dad0b3a33e220538a6e0ae6a3ff7c1e3ac4687f66773ba152ed8 (corrected proof, physical pp. 1–2 and 8). Both were retained and read on 2026-11-06.

May support

• the authors' explanation of the resistance anomaly in the specified samples;

• the distinction between the preprint and the later corrected-proof representation;

• the sample and passage dependence of the reported transition temperature.

Cannot establish

• that the retained corrected proof is byte-identical to the final paginated version of record;

• a cause of the half-levitation observations measured in LK-S06.

Captureability: HIGH for the inspected preprint and institutional proof; final paginated journal copy unresolved
Priority: P0

Publication-candidate retained-reading note: The existing retained readback places the v1 abstract on physical p. 1 (lack of zero resistivity; approximately 385 K Cu₂S transition) and the transport discussion on p. 2. The later corrected-proof summary remains physical p. 2, with publication dating on p. 8. These editorial locators do not establish equivalence to a final paginated journal file.

LK-S08 — Max Planck Stuttgart single-crystal study (refereed)

Exact title: Single crystal synthesis, structure, and magnetism of Pb10−xCux(PO4)6O
Issuer: APL Materials (AIP Publishing)
Authors: P. Puphal, M. Y. P. Akbar, M. Hepting, E. Goering, M. Isobe, A. A. Nugroho, B. Keimer
Citation: APL Mater. 11, 101128 (2023), published October 2023
DOI: 10.1063/5.0172755
Preprint: arXiv:2308.06256, v1 11 Aug 2023, v2 23 Aug 2023
Landing: https://doi.org/10.1063/5.0172755 ; https://arxiv.org/abs/2308.06256

Local research reading: v1 and v2 preprint PDFs and the v2 listing were retained. The publisher landing/PDF requests returned HTTP 403, so a journal-body comparison remains VERIFY. lk99-puphal-v1-pdf, SHA-256 499734bb8b7295de41e944c377d2af5aed683971b10dc414382012aee8228cd4 (the version available at the 16 August checkpoint); lk99-puphal-v2-pdf, SHA-256 2d860f8bd999202a2cd820d34ece2e49e54adb8004e8bb94213ca52de4eead81 (23 August version).

Authority / posture: refereed article (October 2023); not the only refereed negative study (see LK-S06's 15 August 2023 journal version, LK-S07's inspected journal proof and LK-S18's reported journal version), but the one on phase-pure single crystals. Phase-pure single crystals (x ≈ 1) grown without sulfur-bearing precursors are highly insulating and optically transparent; magnetization 2–800 K shows diamagnetic response plus a small ferromagnetic component; no phase-transition anomalies; the authors rule out superconductivity in Pb₉Cu(PO₄)₆O crystals.

May support

• the refereed negative finding on phase-pure material, which tests the claimed material's properties even though it measures no original sample;

• the explanation of polycrystalline anomalies by impurity phases.

Cannot establish

• a direct measurement of the original team's specimens; the study measures its own crystals. Its result can still bear on the reproducibility and properties of the claimed material.

Captureability: HIGH
Priority: P0

Publication-candidate retained-reading note: The existing retained readback identifies physical p. 1 in both v1 and v2 as describing their synthesized phase-pure single crystals (x approximately 1) as highly insulating. Shared scoped abstract wording does not establish complete v1/v2 equivalence or equality to the unavailable journal body.

LK-S09 — Nature news feature (16 August 2023)

Exact title: LK-99 isn't a superconductor — how science sleuths solved the mystery
Issuer: Nature (News)
Author: Dan Garisto
Citation: Nature 620, 705–706 (24 August 2023 print); published online 16 August 2023
DOI: 10.1038/d41586-023-02585-7
Landing: https://www.nature.com/articles/d41586-023-02585-7

Authority / posture: journalism in a scientific journal's news section; synthesizes LK-S06, LK-S07, LK-S08 and related preprints; records that the developers did not respond to a request for comment.

May support

• the state of expert opinion in mid-August 2023 as reported;

• the chronology of the replication arc.

Cannot establish

• a research finding in its own right; it is not a peer-reviewed paper.

Captureability: HIGH (paywall posture to confirm)
Priority: P0

Local research reading: The news body was not retained in the completed local pull. The prior web reading supplies this research pointer; a displayed passage needs its own acquired representation.

LK-S10 — Nature news (4 August 2023)

Exact title: Claimed superconductor LK-99 is an online sensation — but replication efforts fall short
Issuer: Nature (News)
Author: Dan Garisto
Date: 4 August 2023 — VERIFY DOI and locator
Landing: nature.com (locate at capture)

Authority / posture: journalism; the earlier status report before the explanations consolidated.

May support

• the state of play before 16 August; useful for the time-series rendering.

Captureability: HIGH
Priority: P2

LK-S11 — KSSC Verification Committee white paper

Title on candidate cover: LK-99 검증 백서 (LK-99 verification white paper)
Committee named on candidate cover: 한국초전도저온학회 LK-99 검증위원회 (KSSC LK-99 verification committee)
Date on candidate cover: 13 December 2023
Candidate origin: publicly linked Dropbox download; holder and publisher origin unverified. The download locator remains in the source-pull record lk99-kssc-whitepaper-download-candidate; no accepted public Source locator is created here.
Contemporaneous reporting locators: https://www.koreatimes.co.kr/www/tech/2023/12/133_365012.html ; https://www.asiae.co.kr/en/article/2023121309593448526

Authority / posture: readable candidate copy of the professional-society committee report, with the cover identity internally consistent with the expected title/date/committee. Publisher-origin confirmation remains VERIFY. The filename's v1.1 is not an authenticated edition designation. The initial HTTP-200 Dropbox HTML shell and the subsequent PDF are different retained bodies; the shell is not the report.

Local research reading: lk99-kssc-whitepaper-download-candidate, SHA-256 7a1a8720c6eeb7fa1e6c070996e0f4fce5472faea107772f5c7150475c868b1c (155 pages; read on 2026-11-06). Physical pp. 3–4 and 103 describe eight laboratories and three broad synthesis approaches; p. 101 describes the committee's unsuccessful requests for developers' specimens; p. 104 states a strong negative conclusion from the original data and domestic/international replication studies. These are readings of this candidate, not a newly authenticated committee publication.

Sample-access limit: the candidate's p. 5 also relays a report that KENTECH received samples for analysis; its reference on p. 10 points to an Edaily report. That is not independent verification of the transfer or of measurements. It means that the committee's own non-access must not be generalized into a claim that no other institution ever received or examined developers' samples.

May support

• what this identified candidate says about the committee's conclusion, methods and access limit, with origin uncertainty retained;

• a comparison with the separately attributed press reports, once their own representations are read.

Cannot establish

• authenticated publisher origin or an accepted edition identity from the matching cover alone;

• deceptive intent, worldwide absence of other sample access, or anything about PCPOSOS.

Captureability: readable candidate acquired; official origin/edition confirmation unresolved; press representations not retained in this pull
Priority: P0

LK-S12 — APS March Meeting 2024 abstract (PCPOSOS)

Exact title: Partial levitation, type-II-superconductor characteristic, at room temperature and atmospheric pressure in PCPOSOS
Issuer: American Physical Society, March Meeting 2024, Minneapolis, session A16, abstract A16.00002, 4 March 2024, 8:12–8:24
Authors: Hyun-Tak Kim (William & Mary); Sukbae Lee, Sungyeon Im, SooMin An, Keun Ho Auh (QERC)
Landing: https://meetings-archive.aps.org/mar/2024/a16/2 (APS abstract archive, per a parallel review; confirm at capture); contemporaneous report: https://www.koreajoongangdaily.com/news/2024-03-05/business/tech/Korean-scientists-behind-bogus-superconductor-declare-success-again/1994766

Authority / posture: conference abstract and talk. The abstract names a sulfur-containing nominal composition, five authors, and cites the six-author LK-99 preprint (LK-S04); it promises videos. What was physically shown in the talk is known only from reporting (which describes no sample presented); attribute that to the report, not the abstract. No peer-reviewed publication located as of the research date (VERIFY before publication).

May support

• the existence and content of the successor claim;

• the relation between LK-99 and PCPOSOS: a related composition and a further presentation claim, citing the LK-99 preprint, not independent confirmation of LK-99.

Captureability: MEDIUM
Priority: P1

Local research reading: The APS request returned HTTP 403 with no retained body. The abstract details remain prior web-reading findings; no successful local acquisition is claimed.

LK-S13 — Authorship-dispute reporting

Exact title: The Flat Hat (College of William & Mary student newspaper), Daniel Kalish, "W&M physics professors involved in groundbreaking superconductor research", 8 August 2023 (per a parallel review; confirm at capture)
Landing: https://flathatnews.com/wm-physics-professors-involved-in-groundbreaking-superconductor-research/

Authority / posture: campus journalism reporting Hyun-Tak Kim's account that the three-author preprint was submitted without the other authors' permission. It is his account as reported, not an independently established finding; a contemporaneous English account, not necessarily the only one.

May support

• that the three-author preprint was, per a co-author, submitted without the others' permission;

• the stated reason for the six-author preprint's separate submission.

Cannot establish

• the truth of either side's account.

Captureability: HIGH
Priority: P2

LK-S14 — Investigation of the half-levitation behavior

Exact title: Investigation into the nature behind the interesting half levitation behavior of claimed superconductor LK-99
Issuer: arXiv
Identifier: arXiv:2310.08594 (October 2023) — authors VERIFY
Landing: https://arxiv.org/abs/2310.08594

Authority / posture: unrefereed preprint distinguishing ferromagnetic from diamagnetic levitation behavior.

Priority: P2

LK-S15 — Theory preprint widely misread as confirmation

Exact title: Origin of correlated isolated flat bands in copper-substituted lead phosphate apatite
Issuer: arXiv
Author: Sinéad M. Griffin (Lawrence Berkeley National Laboratory)
Identifier: arXiv:2307.16892 (31 July 2023) — VERIFY
Landing: https://arxiv.org/abs/2307.16892

Authority / posture: DFT calculation on an assumed structure; not an experimental confirmation.

Priority: P2

LK-S17 — NPL India, first synthesis report

Exact title: Synthesis of possible room temperature superconductor LK-99: Pb9Cu(PO4)6O
Issuer: arXiv
Authors: Kapil Kumar, N. K. Karn, V. P. S. Awana (CSIR National Physical Laboratory, New Delhi)
Identifier: arXiv:2307.16402, v1 submitted 31 Jul 2023
Landing: https://arxiv.org/abs/2307.16402

Authority / posture: unrefereed preprint; the earliest located independent synthesis report. Reports X-ray structural characterization of a 925 °C-synthesized sample and a sample sitting on a magnet at room temperature; does not report bulk room-temperature superconductivity in its sample. Its reference list cites LK-S01 (the refereed original), LK-S03 and LK-S04.

May support

• the date by which an independent laboratory had synthesized the compound;

• the structural identification by powder X-ray diffraction;

• the structural characterization and magnet demonstration described by that first report, within its stated scope.

Cannot establish

• a direct measurement of the developers' specimens; this report concerns the group's own synthesis;

• a count of independent replication teams greater than one for NPL (see LK-S18).

Captureability: HIGH
Priority: P1

Local research reading: This preprint body was not acquired in the completed pull. Its prior web-reading account remains a research pointer, not a new byte verification.

LK-S18 — NPL India, follow-up measurements

Exact title: Absence of superconductivity in LK-99 at ambient conditions
Issuer: arXiv
Authors: Kapil Kumar, N. K. Karn, Yogesh Kumar, V. P. S. Awana
Identifier: arXiv:2308.03544, v1 7 Aug 2023 12:48 UTC, v2 8 Aug 2023, v3 9 Aug 2023 (arXiv listing)
Journal version: reported as ACS Omega 8(44), 41737 (2023), published 25 October 2023 (per a parallel review; VERIFY at capture); not an August 2023 publication
Landing: https://arxiv.org/abs/2308.03544

Authority / posture: preprint at the August 2023 dates, with a reported refereed version in October 2023; reports no room-temperature superconductivity in the group's samples (SQUID magnetization diamagnetic at 280 K; sample highly resistive). Together with LK-S17 this is one laboratory's successive work: two documents, one replication team.

May support

• the group's negative result at ambient conditions;

• the sequence of one laboratory's reports.

Cannot establish

• two independent replications (same group as LK-S17).

Captureability: HIGH
Priority: P1

Local research reading: The newly listed preprint bodies were not acquired in this pull. Journal and PMC requests returned 403 and 203 without retained article bodies; journal date/content verification remains open at the byte level.

LK-S19 — Jain, copper(I) sulfide phase transition

Exact title: v1 Phase transition of copper(I) sulfide and its implication for purported superconductivity of LK-99; v2 Superionic phase transition of copper(I) sulfide and its implication for purported superconductivity of LK-99 (VERIFY the version-to-title mapping at capture)
Issuer: arXiv
Author: Prashant K. Jain (University of Illinois Urbana-Champaign)
Identifier: arXiv:2308.05222, v1 submitted 9 Aug 2023
Landing: https://arxiv.org/abs/2308.05222

Authority / posture: unrefereed analysis preprint, not a new synthesis or measurement. Identifies the known solid–solid transition of bulk Cu₂S at 104 °C (about 377 K) from the ordered low-temperature phase to the high-temperature superionic phase, compares digitized resistivity curves of LK-99 (from the developers' report, which places a jump at 104.8 °C) and of bulk copper(I) sulfide, and notes a λ-shaped heat-capacity feature consistent with that transition. Concludes that validation of LK-99 would require copper(I) sulfide-free samples.

May support

• the literature value of the Cu₂S transition and its coincidence with the reported LK-99 anomaly;

• the inference that the developers' sample contained copper(I) sulfide (the author cites the NPL synthesis report for the byproduct).

Cannot establish

• a measurement of any LK-99 sample (it measures none);

• the 385 K value, which is LK-S07's measurement on LK-S07's samples. Attribute 104 °C to Jain and 385 K to Zhu; do not average or substitute.

Captureability: HIGH
Priority: P1

Local research reading: The preprint bodies were not acquired in this pull. The version-to-title check remains VERIFY; the preceding content is the earlier web-reading account.

LK-S20 — KSSC statement of 2 August 2023 (committee formation)

Release title on physical p. 1: 한국초전도저온학회 상온초전도체 검증위원회 발족
Attached-statement title on physical p. 3: 상온초전도체 관련 입장문
Issuer: Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
Date: 2 August 2023
Exact PDF inspected: https://super.or.kr/config/download.php?file_name=%28%EB%B3%B4%EB%8F%84%EC%9E%90%EB%A3%8C%29%ED%95%9C%EA%B5%AD%EC%B4%88%EC%A0%84%EB%8F%84%EC%A0%80%EC%98%A8%ED%95%99%ED%9A%8C%EC%9E%85%EC%9E%A5%EB%AC%B8.pdf&file_url=..%2Fupload_board_files%2Fcode_1%2F20230802145651-b76260ef2f.pdf
Format: three-page PDF (Korean)

Authority / posture: the society's formation statement, issued before completed verification. On the basis of the two preprints and public video, it did not regard the material as established to be a room-temperature superconductor at that stage; it announced scientific review, cross-measurement if specimens were supplied and ongoing reproduction efforts. It is distinct from the December conclusion carried in LK-S11, whose candidate origin remains unresolved.

Local research reading: lk99-kssc-aug02-statement-pdf, SHA-256 16bab556990c4eb35832d5e783c60c41ac268f8bacc61a3083330d6c6b7418d1 (official society URL; release p. 1 and attached statement p. 3 inspected). Retained and read on 2026-11-06.

May support

• the committee's formation date and preliminary posture;

• the planned distinction between cross-measuring supplied specimens and making independent samples.

Cannot establish

• a completed verification in August 2023 or the later December conclusion.

Captureability: official three-page PDF acquired; future locator availability is not guaranteed
Priority: P1

LK-S21 — Wu et al., abnormal resistance-temperature behavior (introduction-guide reconciliation)

Exact title: Observation of abnormal resistance-temperature behavior along with diamagnetic transition (title as carried in the repository's introduction guide; VERIFY against the arXiv listing)
Issuer: arXiv
Identifier: arXiv:2308.05001, v1 (9 Aug 2023 per the guide)
Landing: https://arxiv.org/abs/2308.05001v1

Authority / posture: unrefereed preprint, carried here because lib/counterpedia/introduction/editorial.ts already lists it as one of four LK-99 sources with the limit "The tested sample's resistance did not reach zero. An anomaly is not proof of the original superconductivity claim." This dossier does not re-derive its content; its primary page was not read in this revision. The reconciliation item is to read the exact version and either carry it with its own May-support and Cannot-establish lists or record why the guide's treatment is not imported.

Priority: P2 (reconciliation; not required for the demo)

LK-S16 — Wikipedia comparison surface — OPTIONAL

Landing: https://en.wikipedia.org/wiki/LK-99

Authority / posture: tertiary; useful only for comparing how a general encyclopedia compresses the time series. Not a source for any claim.

Priority: OPTIONAL

C. RECORD-CONTRADICTION / QUALIFICATION MAP

C-1 — Original claim vs refereed negative finding

LK-S01/S03/S04 assert superconductivity (above 97 °C in the April abstract; at-or-above/above-400 K formulations in the July preprint abstracts). The inspected LK-S08 preprints report highly insulating phase-pure crystals. LK-S06 reports negative measurements in its own samples and explains half levitation through ferromagnetism and fragment shape; LK-S07 explains a transport anomaly through a Cu₂S structural transition. The prior research account of LK-S18 describes the NPL group's follow-up negative measurements, while LK-S17 is its earlier structural synthesis report; their unretained-body status remains explicit in the source cards. These roles are not interchangeable. Measurements of independently made specimens can bear on reproducibility and the general material claim without becoming direct measurements of a particular original sample. The selected negative measurements and alternative explanations support the producer's assessment that the original superconductivity claim is substantially undermined, with the specimen, phase, publication-date and source-access limits retained.

C-2 — "Replicated" levitation vs "no superconductivity"

The original research inventory attributes reproduced levitation to LK-S05, whose body was not retained. The selected retained LK-S06 publisher abstract independently reports half levitation and attributes it to ferromagnetism and fragment shape, without a Meissner effect or zero resistance in its samples. The LK-S05 pointer is not needed to demonstrate why movement near a magnet alone does not establish superconductivity.

C-3 — Resistance drop vs transition

The sharp resistivity drop near 385 K appears in samples containing Cu₂S and tracks that phase's structural transition (LK-S07). "A transition was observed" and "a superconducting transition was observed" are different claims.

C-4 — Three authors vs six authors

LK-S03 and LK-S04 differ in author set; the prior research inventory also records a submission-dispute account under LK-S13, whose relied-on representation is not established by this candidate. The retained preprints establish different author sets; they do not resolve consent or the dispute.

C-5 — Refereed vs corrected

LK-S01 is refereed; LK-S02a/b corrects it, including a measurement figure. "Peer-reviewed" and "as originally published" diverge for this article.

C-6 — "Nature paper" vs Nature news

The original inventory classifies LK-S09 and LK-S10 as news items, not research papers. Their bodies are not retained in this pull. They remain attributed research pointers for the debate; the proposed lead and physical-measurement claims below instead use the identified retained study representations.

C-7 — Committee "no evidence" vs public "debunked"

The inspected LK-S11 candidate records a strong negative conclusion from the original data and replication studies, alongside the committee's non-receipt of developers' specimens (physical pp. 101, 104; publisher origin unresolved). "Debunked" needs a specified proposition and evidential basis; it is not automatically too strong for every claim. "Unresolved" must not erase converging negative findings. Render the actual assessment and its sample/access limits, and do not turn committee non-access into a worldwide absence claim.

C-8 — LK-99 vs PCPOSOS

The prior research inventory describes LK-S12 as a related sulfur-containing composition and a citation to the LK-99 preprint. Its selected APS request returned 403, so this candidate does not certify those details from retained abstract bytes. The pointer remains separate from the selected 2023 measurement account and is excluded from the proposed lead.

C-9 — Theory vs confirmation

The original inventory records a theory-versus-confirmation question under LK-S15 and reporting under LK-S09. Those representations are not a retained basis for this candidate’s proposed lead. A band-structure result and an experimental superconductivity finding would require separate propositions, assumptions and evidence; the legacy pointers do not settle that comparison here.

C-10 — Two mechanisms for two observations

LK-S06 explains the half levitation (soft ferromagnetism plus fragment shape) in its samples; LK-S07 explains a sharp resistance change (a Cu₂S structural transition near 385 K) in Cu₂S-containing samples; the prior LK-S19 research pointer attributes 104 °C to a literature value for bulk Cu₂S, but that preprint body is not retained here. It is not used to revise Zhu's measured-sample reading. "Cu₂S explains the levitation and the resistance drop" merges the two; the levitation account does not assign all magnetism to Cu₂S, and the transport account says nothing about levitation. Render them as two explanations of two observations, each in its own sample.

C-11 — Two reports, one laboratory

The original inventory identifies LK-S17 and LK-S18 as successive reports from one CSIR National Physical Laboratory group; their bodies are unretained in this pull. This candidate supplies no new group count from those pointers. The same discipline applies to any later journal versions of preprints already in this inventory: a journal version is a new edition of the same work, not a new replication.

C-12 — Two stated bounds in the developers' own record

LK-S01's abstract claims a critical temperature above 97 °C; the July preprint abstracts use at-or-above/above-400 K wording. The April body also mentions 400 K (physical p. 7). These are attributed formulations at named locations, not a finding that the April paper never discussed 400 K or that the nested lower bounds contradict. Carry the document, passage and date instead of presenting one number as the only formulation.

D. FIVE-CLAIM DEMONSTRATION MATRIX — PROVISIONAL ONLY

These are the existing five local C1–C5 research positions expanded for the shared reader. They have no authored canonical identities. Source-card references preserve their editorial role; they do not create source/claim bindings.

C1 — Original claims and correction chronology

Provisional reader wording

The selected record contains an April 2023 Korean-journal article and two distinct preprints submitted on 22 July 2023; the journal article later received a reference erratum and a figure corrigendum.

Candidate research source cards, not new bindings

• LK-S01

• LK-S02a

• LK-S02b

• LK-S03

• LK-S04

What this analysis can establish

The April PDF abstract is on physical p. 1; its original Figure 6(a) and 400 K discussion are on p. 7. LK-S03 v1 has its abstract on physical p. 1. The two notices have their own dates and one-page bodies. The retained v3 six-author preprint additionally reports a maximum Tc of 127 °C for heat-treated sample 1 on physical p. 11. These are document-specific author assertions and corrections.

What it cannot establish / reason to qualify a stronger claim

Neither the existence of a refereed original nor its correction proves superconductivity or fraud. The different author sets and nested temperature bounds do not establish contradictory physics by themselves. The 31 August figure correction belongs after the 16 August checkpoint.

Standing and next check

The selected documentary comparisons are available at research scope. LK-S04 journal-submission outcome remains unresolved and is not asserted. No governed Claim, SourceEdition, Claim-to-SourceEdition relationship, Check outcome or standing is created by this provisional analysis.

C2 — Independently grown phase-pure crystals

Provisional reader wording

The retained Puphal v1 and v2 preprints describe their synthesized phase-pure single crystals as highly insulating; those crystals are not the developers’ specimens.

Candidate research source cards, not new bindings

• LK-S08

What this analysis can establish

Both selected preprint abstracts on physical p. 1 identify their phase-pure single-crystal preparation and highly insulating result. The existing dossier describes the preparation without sulfur-bearing precursors and the study’s lack of superconductivity in its crystals. This tests properties of independently prepared material and bears on reproducibility at that scope.

What it cannot establish / reason to qualify a stronger claim

A result in those crystals is not direct measurement of every original specimen. A shared abstract statement does not establish complete v1/v2 identity or byte-equivalence to the later APL Materials article. The journal-body requests returned 403.

Standing and next check

Use v1 at the 16 August checkpoint and v2 only from 23 August. Keep the journal citation separate; no new journal-body claim is required for the proposed lead. No governed Claim, SourceEdition, Claim-to-SourceEdition relationship, Check outcome or standing is created by this provisional analysis.

C3 — Committee-report candidate and specimen access

Provisional reader wording

The identified 155-page PDF candidate, with a 13 December 2023 cover date, describes eight laboratories, a negative assessment and the committee’s unsuccessful requests for developers’ specimens; its publisher origin remains unresolved.

Candidate research source cards, not new bindings

• LK-S11

What this analysis can establish

The recorded candidate reading locates laboratories/approaches on physical pp. 3–4 and 103, committee non-access on p. 101 and the negative conclusion on p. 104. This supports statements about what this exact candidate says, with the source-origin qualification attached.

What it cannot establish / reason to qualify a stronger claim

Matching a cover or a filename does not authenticate publisher origin or an edition. The candidate’s p. 5 relays a KENTECH sample-access report with an Edaily reference on p. 10; that is not independent transfer verification. Committee non-access cannot become worldwide non-access.

Standing and next check

The proposed lead omits this candidate. The owner must choose whether the qualified research-document card/claim remains in a public candidate or is omitted pending publisher-origin resolution; neither choice authenticates it. No governed Claim, SourceEdition, Claim-to-SourceEdition relationship, Check outcome or standing is created by this provisional analysis.

C4 — Two observations and two explanations

Provisional reader wording

Guo and colleagues attribute half levitation in their synthetic samples to soft ferromagnetism and shape anisotropy; Zhu and colleagues attribute a resistance anomaly in Cu₂S-containing specimens to a structural transition near 385 K.

Candidate research source cards, not new bindings

• LK-S06

• LK-S07

What this analysis can establish

Guo’s retained publisher abstract is associated with a journal publication date of 15 August 2023, and reports neither a Meissner effect nor zero resistance in the studied samples. Zhu v1 physical pp. 1–2 and the later corrected-proof summary on physical p. 2 distinguish a multi-order resistance drop from zero resistivity. The interpretations concern different measured phenomena.

What it cannot establish / reason to qualify a stronger claim

This does not identify one cause for every feature reported as LK-99, assign all magnetism to Cu₂S, or directly test the developers’ specimens. Guo’s journal full text is not the retained representation. Zhu’s corrected proof is not established as the separately paginated final article.

Standing and next check

Retain the two attributions, specimens, versions and dates. The unresolved final-edition comparison is outside the lead’s selected scope. No governed Claim, SourceEdition, Claim-to-SourceEdition relationship, Check outcome or standing is created by this provisional analysis.

C5 — What a compressed verdict leaves out

Provisional reader wording

“LK-99 was debunked” compresses original claims, author corrections, sample-specific independent measurements and explanations, and a later origin-unresolved committee account.

Candidate research source cards, not new bindings

• LK-S01

• LK-S02b

• LK-S06

• LK-S07

• LK-S08

• LK-S11

What this analysis can establish

The selected independent results and alternative explanations support a negative assessment of the original superconductivity claim in this documentary record, while retaining what each sample and representation actually tests. The record can be explained without pretending that all uncertainty is equivalent or that negative results disappear because specimens differ.

What it cannot establish / reason to qualify a stronger claim

The quoted formulation is a question for analysis, not a quotation from one source or a formal Counterpedia finding. It does not establish fraud, resolve every possible composition, or constitute an exhaustive current-literature absence claim.

Standing and next check

State a specific physical proposition and its selected evidence before adopting a stronger assessment. The retained source limits remain attached; no new literature search or successor-claim assessment has been performed. No governed Claim, SourceEdition, Claim-to-SourceEdition relationship, Check outcome or standing is created by this provisional analysis.

E. BEST "WHY NOT?" SPECIMEN

Popular formulation

"A Nature paper proved LK-99 isn't a superconductor."

Why not

The original inventory classifies the 16 August Nature item as a news feature (LK-S09), but its body is not retained in this pull. This candidate therefore does not certify a Nature passage. The physical results can instead be attributed directly to the retained LK-S08 preprints and LK-S06 publisher abstract, keeping their own samples, methods and dates. A journal’s news item is not interchangeable with a research paper or a collective finding by every researcher.

So: a news article in Nature does not equal a Nature research paper and reporting a conclusion does not equal establishing it.

Reopening condition

State a physical proposition and cite the study that actually measured it. The single-crystal result belongs to LK-S08's specimens and selected edition; the December synthesis belongs to LK-S11, with candidate-origin uncertainty retained until resolved. Neither source makes the August Nature news article a research paper. Any as-of-16-August comparison uses the versions available on that date.

F. SECOND "WHY NOT?" — REPLICATION LOGIC

Popular formulation

"Other labs reproduced the levitation, so the superconductivity was confirmed."

Why not

Levitation of a small fragment over a magnet is not the Meissner effect unless ferromagnetism is excluded. The Peking University group reproduced half levitation and measured it as ferromagnetic, with no superconducting signature in resistance (LK-S06). Reproduction of a behavior is not reproduction of its claimed cause.

Counterpedia reveal The page can show the same observation (half levitation) under two recorded interpretations with their measurements, without choosing a slogan.

G. THIRD "WHY NOT?" — COMMITTEE SCOPE

Popular formulation

"The Korean committee proved it was a fraud."

Why not

The inspected white-paper candidate (LK-S11, physical pp. 101 and 104; publisher origin unresolved) records a strong negative evidential conclusion and the committee's inability to obtain developers' specimens. Those passages do not establish deceptive intent. A fraud allegation requires its own stated actor, conduct, evidence and documentary posture; it is not a paraphrase of a negative superconductivity assessment.

H. SOURCE-PAGE / REVERSE-WIKIPEDIA VALUE

1. LK-S02a and LK-S02b — the erratum and the corrigendum

A refereed article corrected twice by its authors, once to replace a measurement figure. The Source page shows that a journal edition has a history.

2. LK-S08 — the single-crystal study

The refereed negative finding on phase-pure crystals (one of several refereed negative or explanatory studies; see LK-S06's August journal version); its scope (phase-pure crystals, no sulfur precursors) is the model for "what this record can establish".

3. LK-S03 + LK-S04 — two preprints, one claim

Two documents, two author sets, one subject. The Source pages let a reader see which bytes were read.

4. LK-S11 — the white paper

A readable white-paper candidate whose negative conclusion sits beside its committee-specific access limit. The source account must show both the passages read and the unresolved publisher origin. The retained candidate is not automatically an authenticated edition or permission to host its body.

I. 30–60 SECOND DEMO MOMENT

Open LK-99 as a full chronology, with a labeled 16 August 2023 checkpoint. Show the following attributed records, using paraphrases rather than presenting a later document as known earlier:

April 2023, refereed original — LK-S01

The abstract claims an ambient-pressure critical temperature above 97 °C; the body also mentions 400 K. The June erratum and August corrigendum are separate records with their own dates (LK-S02a/b).

22 July 2023, original preprints — LK-S03/S04

Two author sets make superconductivity claims using at-or-above/above-400 K wording. Identify the exact preprint version.

16 August checkpoint — LK-S06/S07/S08/S20

Guo's journal record has been published on 15 August; Zhu v1 and Puphal v1 are preprints at this checkpoint. The committee's 2 August statement is preliminary. Do not display the 31 August correction or later journal/committee outcomes as already available.

Later 2023 — LK-S07/S08/S11

The single-crystal work has an October journal version; Zhu's inspected corrected proof carries a 24 November publication date. The downloaded white-paper candidate dated 13 December records a negative conclusion and committee non-access to developers' specimens; its publisher origin remains unresolved.

Ask:

What do the selected 2023 records establish about the claims and the specimens actually tested?

Counterpedia answers:

The original papers assert superconductivity; the selected independent measurements do not establish it and, with two different explanations of reported observations, substantially undermine the original claim in this selected record. Those studies concern specified independently made samples. Later journal publication and the origin-unresolved committee account enter at their own dates. The committee's access limit does not establish that no other institution examined developers' specimens.

Then expose document/version, sample and method, publication state, assessment date, and the distinction between a readable candidate and verified publisher origin. All proposed Entry displays remain subject to the applicable acquisition and publication steps.

J. CAPTURE PRIORITY

This is a governed-acquisition and gap list, not a claim that all pointers still lack bytes. The local source pull acquired the original journal PDF, both corrections, the three-author v1, all three six-author versions, Guo v1/v2 plus journal metadata/abstract, Zhu v1 plus a corrected proof, Puphal v1/v2, the August committee statement and the December candidate. Retained research downloads do not satisfy the native Acquisition lane by themselves. Nature and other reporting bodies were not retained; Puphal's publisher requests and the APS request returned 403; Kumar's publisher/PMC attempts retained no article body. The NPL, Jain and Wu preprint bodies newly listed in this draft were not part of the successful pull.

P0 — essential

1. LK-S01 Korean-journal article exact PDF

2. LK-S02a and LK-S02b, erratum and corrigendum, exact PDFs

3. LK-S03 arXiv:2307.12008v1 exact PDF

4. LK-S04 arXiv:2307.12037, every version, exact PDFs and the abstract page with submission history

5. LK-S06 Peking University preprint (v1 and v2) and its 15 August journal metadata/abstract; identify any separately acquired journal full text

6. LK-S07 Beijing IOP preprint v1 and the inspected corrected proof, kept as separate representations

7. LK-S08 APL Materials article (publisher PDF unresolved) and arXiv v1/v2; the historical checkpoint uses v1

8. LK-S09 Nature news feature

9. LK-S11 KSSC white paper: preserve the inspected candidate and resolve publisher origin/edition; keep press coverage separate

P1 — important corroboration / contradiction

1. LK-S05 Huazhong preprint

2. LK-S12 APS abstract page

3. LK-S17 and LK-S18 NPL India preprints (arXiv:2307.16402; arXiv:2308.03544, every version)

4. LK-S19 Jain preprint (arXiv:2308.05222, v1 and v2) and LK-S20 KSSC statement of 2 August 2023 (original PDF)

5. Southeast University preprint (arXiv:2308.01192) — VERIFY

P2

1. LK-S10, LK-S13, LK-S14, LK-S15, LK-S21 (reconciliation with the introduction guide)

2. LK-S07 final paginated journal representation, if needed beyond the acquired corrected proof; any peer-reviewed PCPOSOS publication, if located

OPTIONAL

1. LK-S16 Wikipedia snapshot for comparison only

K. INTEGRITY FLAGS

1. Version identity is load-bearing

arXiv:2307.12037 has more than one version; cite the version read.

2. The refereed original was corrected

For a post-31-August-2023 or current reading, show the original article with LK-S02b, the figure-replacement correction; LK-S02a is the separate bibliography erratum. The 16 August checkpoint predates LK-S02b and must not present that later correction as then available. The original retained PDF still carries the earlier figure, so preserve the notice beside it rather than silently replacing the original bytes.

3. Sample identity governs every negative result

The selected independent study papers report measurements of their own samples. The LK-S11 candidate states that the committee did not receive developers' specimens, while also relaying a report of KENTECH sample access (physical pp. 5, 10, 101). This dossier establishes neither a verified KENTECH measurement nor a worldwide absence of original-sample measurements. Keep direct measurement, indirect relevance and access claims distinct.

4. "Nature" is two things here

Two news items and zero research papers in Nature appear in this record.

5. The committee conclusion retains its document and origin limits

"Disproved", "refuted" and "fraud" make different claims with different evidential requirements. Render any such assessment only with its stated proposition and basis. The committee account in this draft is read from an identified candidate with publisher origin unresolved; neither that qualification nor committee non-access erases the independent negative measurements.

6. PCPOSOS is a different composition

Do not render the 2024 claim as a continuation of the LK-99 measurement record.

7. Dates are part of every status sentence

A status sentence about LK-99 identifies the material and specimen, the conditions, the record it rests on and the date of assessment; the record supports a dated negative assessment, not an undated verdict either way.

8. Stock-market and social-media material is out of scope

Interesting but not evidentiary for the subject; leave it to the comparison surface if at all.

9. Locators marked VERIFY are unresolved

Resolve every VERIFY item relied on by the proposed lead or demo before stamping its sidecar; omit an unresolved assertion if it is outside that selected scope. Record completed local checks as completed without calling them governed capture. The research-lead sidecar binds to the final dossier digest; a nonempty basis-reference array is an editorial declaration, not per-sentence proof.

10. Two mechanisms are not one

Ferromagnetic half levitation (LK-S06) and the Cu₂S transport transition (LK-S07) explain different observations in different samples; never render "Cu₂S explains LK-99" as a single sentence.

11. 104 °C is Jain's literature value; 385 K is Zhu's measurement

The original inventory attributes 104 °C to the LK-S19 literature pointer, whose body is not retained here. The selected LK-S07 measurement reading gives approximately 385 K. Do not treat the unretained pointer as newly verified or reconcile different attributed contexts into one value.

12. Two NPL reports are one team

LK-S17 and LK-S18 count as one replication group in any sentence that counts groups.

13. The repository already carries an LK-99 editorial guide

lib/counterpedia/introduction/editorial.ts (INTRODUCTION0, PR #2247, merged 2026-10-15) lists four sources including LK-S21; this dossier is reconciled with it, not a replacement for it, and the apparatus fixture apparatus/fixtures/lk-99-superconductivity-claim/ is a separate producer that this dossier does not describe.

L. PROVISIONAL LK-99 THESIS FOR REVIEW

The LK-99 record is a time series of documents with different authors, publication states and samples. Counterpedia can make a dated assessment inspectable: the selected independent measurements and two distinct explanations of reported observations substantially undermine the original superconductivity claim, while preserving which specimens and phases were tested. The original article's corrections, later journal versions and committee account enter at their own dates. The selected papers do not directly measure the developers' specimens; the committee-specific access statement in the readable white-paper candidate does not establish a worldwide absence of such measurements, and the candidate's publisher origin remains unresolved. These qualifications limit the account without making the negative findings disappear.