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We find good consistency with the standard spatially-flat 6-parameter $\\Lambda$CDM cosmology having a power-law spectrum of adiabatic scalar perturbations (denoted \"base $\\Lambda$CDM\" in this paper), from polarization, temperature, and lensing, separately and in combination. A combined analysis gives dark matter density $\\Omega_c h^2 = 0.120\\pm 0.001$, baryon density $\\Omega_b h^2 = 0.0224\\pm 0.0001$, scalar spectral index $n_s = 0.965\\pm 0.004$, and optical depth $\\tau = 0.054\\pm","authors_text":"A. A. Fraisse, A. Challinor, A. Ducout, A. Frolov, A. Gruppuso, A. H. Jaffe, A. J. Banday, A. Karakci, A. Lasenby, A. Lewis, A. Mangilli, A. Marcos-Caballero, A. Melchiorri, A. Mennella, A. Moss, A. Renzi, A.-S. Suur-Uski, A. Zacchei, A. Zonca, B. D. Wandelt, B. Partridge, B. P. Crill, B. Ruiz-Granados, B. Van Tent, C. Baccigalupi, C. Burigana, C. Combet, C. R. Lawrence, C. Rosset, C. Sirignano, D. Contreras, D. Herranz, D. Maino, D. Molinari, D. Paoletti, D. Scott, D. Tavagnacco, E. Calabrese, E. Di Valentino, E. Franceschi, E. Hivon, E. Keih\\\"anen, E. Mart\\'inez-Gonz\\'alez, E. P. S. Shellard, F. Boulanger, F. Cuttaia, F. Elsner, F. Finelli, F. Forastieri, F. K. Hansen, F. Levrier, F. Perrotta, F. Piacentini, F. R. Bouchet, F. Villa, G. de Zotti, G. Efstathiou, G. Lagache, G. Maggio, G. Morgante, G. Patanchon, G. Polenta, G. Rocha, G. Roudier, G. Sirri, H. C. Chiang, H. K. Eriksen, H. Kurki-Suonio, H. U. N{\\o}rgaard-Nielsen, H. V. Peiris, I. K. Wehus, J. A. Rubi\\~no-Mart\\'in, J. A. Tauber, J. Aumont, J. Borrill, J. Carron, J. Chluba, J. Delabrouille, J. D. McEwen, J. E. Gudmundsson, J.-F. Cardoso, J. Fergusson, J. F. Mac\\'ias-P\\'erez, J. Gonz\\'alez-Nuevo, J. Hamann, J. J. Bock, J. Kim, J. Lesgourgues, J.-L. Puget, J.-M. Delouis, J. M. Diego, J.-M. Lamarre, J.-P. Bernard, J. P. Rachen, J. R. Bond, J. Valiviita, K. Benabed, K. Ganga, K. Kiiveri, K. M. G\\'orski, L. D. Spencer, L. Knox, L. Montier, L. Pagano, L. P. L. Colombo, L. Polastri, L. Salvati, L. Toffolatti, L. Valenziano, L. Vibert, M.-A. Miville-Desch\\^enes, M. Ashdown, M. Ballardini, M. Bersanelli, M. Bucher, M. Douspis, M. Farhang, M. Frailis, M. Gerbino, M. Kunz, M. Lattanzi, M. Le Jeune, M. Liguori, M. Lilley, M. L\\'opez-Caniego, M. Maris, M. Martinelli, M. Migliaccio, M. Millea, M. Reinecke, M. Remazeilles, M. Sandri, M. Savelainen, M. Tenti, M. Tomasi, M. White, N. Bartolo, N. Krachmalnicoff, N. Mandolesi, N. Mauri, N. Vittorio, O. Dor\\'e, P. Bielewicz, P. B. Lilje, P. De Bernardis, P. G. Martin, Planck Collaboration: N. Aghanim, P. Lemos, P. M. Lubin, P. Natoli, P. R. Meinhold, P. Vielva, R. Battye, R. B. Barreiro, R. C. Butler, R. Fernandez-Cobos, R. Keskitalo, R. Sunyaev, R. T. G\\'enova-Santos, S. Basak, S. D. M. White, S. Dusini, S. Galeotta, S. Galli, S. Gratton, S. Matarrese, S. Mitra, S. R. Hildebrandt, T. A. En{\\ss}lin, T. Ghosh, T. S. Kisner, T. Trombetti, V. Lindholm, V. Pettorino, W. C. Jones, W. Handley, X. Dupac, Y. Akrami, Y. Fantaye, Y.-Z. Ma, Z. Huang","cross_cats":[],"headline":"Planck's final CMB measurements fix the standard flat six-parameter Lambda CDM parameters to high precision and find no compelling evidence for extensions.","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-07-17T04:05:07Z","title":"Planck 2018 results. VI. Cosmological parameters"},"references":{"count":299,"internal_anchors":63,"resolved_work":299,"sample":[{"cited_arxiv_id":"1402.4090","doi":"","is_internal_anchor":false,"ref_index":1,"title":"Astrophysical and Dark Matter Interpretations of Extended Gamma-Ray Emission from the Galactic Center","work_id":"c69cc4ab-ac30-4697-8c06-7b4d58ee1f1a","year":2014},{"cited_arxiv_id":"1710.05832","doi":"","is_internal_anchor":true,"ref_index":2,"title":"GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral","work_id":"a19136e8-99c2-49be-b029-60af2e20c6ee","year":2017},{"cited_arxiv_id":"1710.05835","doi":"","is_internal_anchor":false,"ref_index":3,"title":"A gravitational-wave standard siren measurement of the Hubble constant","work_id":"481dbbf4-380d-4487-9fc1-b4153c3e1088","year":2017},{"cited_arxiv_id":"1710.09126","doi":"","is_internal_anchor":false,"ref_index":4,"title":"Atmospheric neutrino oscillation analysis with external constraints in Super-Kamiokande I-IV","work_id":"b06d1af6-4467-4ec5-a4a0-9d70d50ecff3","year":2018},{"cited_arxiv_id":"1703.03328","doi":"","is_internal_anchor":false,"ref_index":5,"title":"Constraints on Oscillation Parameters from $\\nu_e$ Appearance and $\\nu_\\mu$ Disappearance in NOvA","work_id":"441bb065-5ef2-41da-8b87-18afd2ba77e7","year":2017}],"snapshot_sha256":"cbdc3b1a718ecca610c9cee2c267df367de5acab1dd031551b44e6b4405ae9dd"},"source":{"id":"1807.06209","kind":"arxiv","version":4},"verdict":{"created_at":"2026-05-10T14:36:29.337717Z","id":"76c721a8-d684-45e0-9aba-1c499f59a1b6","model_set":{"reader":"grok-4.3"},"one_line_summary":"Final Planck CMB data confirms the flat 6-parameter ΛCDM model with Ω_c h² = 0.120 ± 0.001, Ω_b h² = 0.0224 ± 0.0001, n_s = 0.965 ± 0.004, τ = 0.054 ± 0.007, H_0 = 67.4 ± 0.5 km/s/Mpc, and no strong evidence for extensions.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"Planck's final CMB measurements fix the standard flat six-parameter Lambda CDM parameters to high precision and find no compelling evidence for extensions.","strongest_claim":"A combined analysis gives dark matter density Ω_c h² = 0.120±0.001, baryon density Ω_b h² = 0.0224±0.0001, scalar spectral index n_s = 0.965±0.004, and optical depth τ = 0.054±0.007. We find no compelling evidence for extensions to the base-ΛCDM model.","weakest_assumption":"The analysis assumes that the observed CMB power spectra are generated by the base spatially-flat 6-parameter ΛCDM model plus standard foregrounds, with no large unmodeled systematics or new physics that would alter the likelihood surface."}},"verdict_id":"76c721a8-d684-45e0-9aba-1c499f59a1b6"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:39809b7e46a7e981a15ccedfeb3f6d48e07e743871635b99239bd094f8e8dc38","target":"record","created_at":"2026-07-05T03:03:59Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"b4506d709a4bd6d9ab320b62cc75f3d99299bbf1cc68a2ef40b206b981827e12","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2018-07-17T04:05:07Z","title_canon_sha256":"79922b9513fa7f8da8aad638fb932142eec2b8d0d1f85681b3cf248df4336e06"},"schema_version":"1.0","source":{"id":"1807.06209","kind":"arxiv","version":4}},"canonical_sha256":"3502ffef56ea4199484c7f63d919220ca50dc4d7d20377646be938ea012fd5ec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3502ffef56ea4199484c7f63d919220ca50dc4d7d20377646be938ea012fd5ec","first_computed_at":"2026-07-05T03:03:59.530990Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:03:59.530990Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VOpwbLSj5Bsnd9oGnYgWkNhLdWU4Z5ov9zjHmqXsKxy0WCdKSM02MFY/d5gMLAWcGONNgnprbItgnNWa3L+9CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:03:59.531542Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.06209","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:39809b7e46a7e981a15ccedfeb3f6d48e07e743871635b99239bd094f8e8dc38","sha256:7e312bcc8f94903c1f540d77f30580d61f63b0d81e4498cdd3364cd60f1ec569"],"state_sha256":"da0b949826f4aa9442838feb1f3c94936b9dabd0c7665747afcd8ffc2678e60d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mFSeihCMyu9yqOsH+smmvAf6bY9Wnt+YS5UsaWRUEvm3y0FWFXCUEZY1ZyVVpyTV/+GITgTTyhKn/z1OI+snBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T04:32:40.032084Z","bundle_sha256":"ae26584fdc86b11518e8a4821d71a9cb296338b1cf30433a59f322c01ddb99bd"}}