Room-Temperature Superconductivity — Reproducibility Under Laboratory Conditions

The claim has not been satisfied. No room-temperature superconductor has been reproduced under independent laboratory conditions to the community's current evidence standards. The two most prominent recent claims (Dias, LK-99) both failed replication — one through misconduct findings, one through rapid systematic null results from over forty independent groups. The confirmed high-pressure hydride results (INST-003) demonstrate that reproducible superconductivity approaching room temperature is achievable under extreme pressure, but not at room temperature or ambient pressure, and no material has met the community's evidence standard — zero resistance, Meissner effect, and specific heat anomaly, all independently confirmed — at conditions resembling laboratory practicality. The pressure state is COLLAPSED: the claim has been tested repeatedly, most recently and most rapidly in the LK-99 episode (INST-002), and no candidate has survived independent replication. The record remains open to reopening under AT-001 should a future material meet the tightened standard.

The claim remains unsatisfied and the pressure state remains COLLAPSED. IN-006 documents that the field did not go quiet after the 2024 null result — a nickelate stabilisation at ambient pressure (Feb 2025), a new 298K high-pressure record (Nov 2025, unreplicated), and a March 2026 field-wide research roadmap all represent real activity — but none meets AT-001's reopening condition: zero resistance, Meissner effect, and specific-heat anomaly, confirmed independently, under the community's tightened standard. The November 2025 result is the closest superficial match to a 'room-temperature' headline since LK-99, and is explicitly logged here so that the record does not appear to have missed it; on examination it fails the same threshold IN-001 through IN-003 already established — high pressure, no independent confirmation, no full evidentiary set. This assessment exists to confirm the COLLAPSED state remains correct under current evidence, not to revise it. The record's status remains CLOSED.