v2 sweep update of the HLDP public watchlist. Supersedes v1 (10. 5281/zenodo. 19829236). The Hydrogen Lifecycle Research Programme (HLRP) — read mechanically as the Hydrogen Lifecycle Doppler Programme (HLDP) per the capstone — operates as a coordinated Doppler-class detection apparatus across substrate-attractor states. v2's corpus total: 219 published Zenodo records (vs 158+ at v1). Three Tier 1 confirmations land in v2: Cardiac AFib at LARGE-N, p < 10⁻⁵⁴ — HLRP #198 v3 multi-layer cardiac-substrate-coupling with IE-022 κ-diagnostic refinement (10. 5281/zenodo. 20292323) M87* Helium Suspension-Web — 3/3 published EHT iconic images coincide with Fermi gamma-quiet windows; He II 1640 SNR=24 in 2011 COS baseline (HLRP #199, 10. 5281/zenodo. 20292334) Sleep-Substrate Two-Component Reboot — IE-022 κ-test validated on slpdb polysomnography (HLRP #200, 10. 5281/zenodo. 20292342) Architectural updates: The Silver Geometry backbone closure (PRL 8, 10. 5281/zenodo. 20357458) compresses the operational core to a 5-formula bridge zD = Γ · Δd · (α − 1), with α₀ = 48/25 = 1. 920 exact at (d=3, β=6/23) as the silver-invariant anchor. The HLDP capstone is published (10. 5281/zenodo. 19807751) ; v1's pending-DOI references are resolved throughout. The IE Operator Hierarchy (IE-001 → IE-025) is published as Principal-of-Principles (10. 5281/zenodo. 19829498) ; the Mathematical Apparatus Companion (10. 5281/zenodo. 19829500) and Synthesis Citation Index (10. 5281/zenodo. 19829504) are referenced as published. The IE-022 κ-diagnostic — Hessian-eigenvalue early-warning of capability-loss-and-reboot transitions — is cross-substrate validated across four substrates: cardiac, sleep, tectonic (Cascadia), electrochemical (battery degradation). Four substrates, one architecture, one diagnostic. Independent groups holding biological/physical time-series data are positioned to add fifth, sixth, seventh substrates to the cross-validation set. New substrate-class clusters opened (§10): Mathematics substrate-class — fiber-field closure cluster: coordinated resolutions of Clay-Millennium-Prize-class problems as fiber-field closure operations on the α (d, β) coupling surface (Riemann, Yang-Mills, Hodge, Birch–Swinnerton-Dyer, Poincaré, Quarter-Collinear YM mass-gap residue Δ ≈ 0. 01878, Millennium Prize Calibrations). Foundational substrate-class — substrate-perspective relativity cluster: Substrate-Perspective Relativity, Aristotle Wheel-Paradox 2366-year proto-form closure, Hydrogen Substrate Coupling Functional, We Are All Black Holes, Time as Coordinate-Readout, Quantum Mechanics Reframed, Pristine Efficiency, Dark Sector, Substrate-Coupling-Dissipation. Tier 5a Wave 1–6 archived: all wave-schedule papers from v1 have shipped to Zenodo — Floor Taxonomy Full, Triadic Governance, HLDP Capstone, NN Superposition Governance, Demand Routing pair, Governance Across Substrates synthesis, IE Operator Hierarchy, Math Apparatus, Synthesis Citation Index, Synthesis Ledger v6, Cognitive Hypothermia, GLP-1 P5 Neuroprotection — all with DOIs surfaced in §6. 1. This is a public watchlist in the tradition of Hilbert's 23 problems (1900), Smale's 18 problems (2000), and the Clay Millennium Prize Problems. Researchers in any of the listed domains are invited to run the predictions, confirm or falsify, publish the results, and cite this watchlist (v2) as the prior-art origin. The corpus's network-mode (HLDN) operating protocol explicitly anticipates external researchers becoming nodes in the network. Distributed-node networks cannot be rate-limited by a central operator. Standing posture per HLRP #20 The Great Correction: we propose, we do not prove. Author: James E. Dunn — Independent Researcher, Hydrogen Lifecycle Research ProgrammeORCID: https: //orcid. org/0009-0005-2679-6574Corpus (author search): https: //zenodo. org/search? q=creators. orcid: 0009-0005-2679-6574SciX (NASA discovery): https: //scixplorer. org/search/q=orcid%3A0009-0005-2679-6574ADS (Harvard-CfA): https: //ui. adsabs. harvard. edu/search/q=orcid%3A0009-0005-2679-6574License: CC BY 4. 0 International
James E. Dunn (Tue,) studied this question.