{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:5BKNAMJGISYQ2FSYUQ3ZKTFCLA","short_pith_number":"pith:5BKNAMJG","canonical_record":{"source":{"id":"1705.02907","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-05-08T15:06:08Z","cross_cats_sorted":[],"title_canon_sha256":"7bfc3caad48a268d1687765f1dc95d12e9c4becc8edbd1282e32d1c1c00be68e","abstract_canon_sha256":"77f0449e6b68c4c1a78647079adf4ba8453c75d1a40ab044f7525f22c65cf7e3"},"schema_version":"1.0"},"canonical_sha256":"e854d0312644b10d1658a437954ca2581984187cd38623cf10ae3de772f4a352","source":{"kind":"arxiv","id":"1705.02907","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.02907","created_at":"2026-05-18T00:31:51Z"},{"alias_kind":"arxiv_version","alias_value":"1705.02907v2","created_at":"2026-05-18T00:31:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.02907","created_at":"2026-05-18T00:31:51Z"},{"alias_kind":"pith_short_12","alias_value":"5BKNAMJGISYQ","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"5BKNAMJGISYQ2FSY","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"5BKNAMJG","created_at":"2026-05-18T12:31:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:5BKNAMJGISYQ2FSYUQ3ZKTFCLA","target":"record","payload":{"canonical_record":{"source":{"id":"1705.02907","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-05-08T15:06:08Z","cross_cats_sorted":[],"title_canon_sha256":"7bfc3caad48a268d1687765f1dc95d12e9c4becc8edbd1282e32d1c1c00be68e","abstract_canon_sha256":"77f0449e6b68c4c1a78647079adf4ba8453c75d1a40ab044f7525f22c65cf7e3"},"schema_version":"1.0"},"canonical_sha256":"e854d0312644b10d1658a437954ca2581984187cd38623cf10ae3de772f4a352","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:31:51.146328Z","signature_b64":"B3XF4f/I54o0wdxGbP/ZrtWAMky+0c4VTx2/T0Y7wLG97Q9k53D9iCtPXFT1wvugWE3/XrJInpDWC1Gxcq5xBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e854d0312644b10d1658a437954ca2581984187cd38623cf10ae3de772f4a352","last_reissued_at":"2026-05-18T00:31:51.145559Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:31:51.145559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.02907","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:31:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b6wBkhCn0K3fWj9UuetzxDeeS5RhZ/pRTJfMUT5mUdrvE0ZTW4JsTdvjNULWuxQp8qEdRE41OubsTxlrAjtZAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T14:00:39.796801Z"},"content_sha256":"e50f149827ec3c1b5fe6282aab5fd871bdd067f8ad4ce2269662093c3bd0e950","schema_version":"1.0","event_id":"sha256:e50f149827ec3c1b5fe6282aab5fd871bdd067f8ad4ce2269662093c3bd0e950"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:5BKNAMJGISYQ2FSYUQ3ZKTFCLA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Measurement of the Cosmic Microwave Background $B$-Mode Polarization Power Spectrum at Sub-Degree Scales from 2 years of POLARBEAR Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Cukierman, A. Ducout, A. Gilbert, A.H. Jaffe, A. Kusaka, A. Suzuki, A.T. Lee, A. T. P. Pham, A. Zahn, B.D. Sherwin, B. Keating, C. Baccigalupi, C. Feng, C. Hill, C.L. Reichardt, C. Ross, C. Tucker, D. Barron, D. Beck, D. Boettger, D. Kaneko, D. Leon, D. Poletti, D. Tanabe, E. Linder, E.M. Leitch, F. Bianchini, F. Matsuda, G.C. Jaehnig, G. Fabbian, G. Hall, G.P. Teply, G. Puglisi, H. Nishino, H. Paar, J. Borrill, J. Errard, J. Groh, J. Montgomery, J. Peloton, K. Arnold, K. Crowley, L. Howe, L. Lowry, M. Aguilar, M. Dobbs, M. Hasegawa, M. Hazumi, M. Le Jeune, M. Navaroli, M. Silva-Feaver, N. Galitzki, N. Goeckner-Wald, N. Katayama, N. Krachmalnicoff, N. Stebor, N.W. Halverson, N. Whitehorn, O. Jeong, O. Tajima, P.L. Richards, P. Siritanasak, R. D\\\"unner, R. Keskitalo, R. Stompor, S. Chapman, S.M. Feeney, S. Takakura, S. Takatori, T. Elleflot, T. Fujino, T. Hamada, The POLARBEAR Collaboration: P.A.R. Ade, T. Kisner, T. Matsumura, T. Tomaru, Y. Akiba, Y. Chinone, Y. Inoue, Y. Minami, Y. Segawa","submitted_at":"2017-05-08T15:06:08Z","abstract_excerpt":"We report an improved measurement of the cosmic microwave background (CMB) $B$-mode polarization power spectrum with the POLARBEAR experiment at 150 GHz. By adding new data collected during the second season of observations (2013-2014) to re-analyzed data from the first season (2012-2013), we have reduced twofold the band-power uncertainties. The band powers are reported over angular multipoles $500 \\leq \\ell \\leq 2100$, where the dominant $B$-mode signal is expected to be due to the gravitational lensing of $E$-modes. We reject the null hypothesis of no $B$-mode polarization at a confidence o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02907","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:31:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t8DGhY47B64PruB6OjNwIKy5waYm4YRoFQTLzdaD7eWpUpt6f5VH/evjhdaZPQ95FeYabC7QxsENYzFY3XB9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T14:00:39.797292Z"},"content_sha256":"c95829fd452f1a4710d89aecd1106dcd0c514bdd524cda35d4c2a7562d0bcd8f","schema_version":"1.0","event_id":"sha256:c95829fd452f1a4710d89aecd1106dcd0c514bdd524cda35d4c2a7562d0bcd8f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5BKNAMJGISYQ2FSYUQ3ZKTFCLA/bundle.json","state_url":"https://pith.science/pith/5BKNAMJGISYQ2FSYUQ3ZKTFCLA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5BKNAMJGISYQ2FSYUQ3ZKTFCLA/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T14:00:39Z","links":{"resolver":"https://pith.science/pith/5BKNAMJGISYQ2FSYUQ3ZKTFCLA","bundle":"https://pith.science/pith/5BKNAMJGISYQ2FSYUQ3ZKTFCLA/bundle.json","state":"https://pith.science/pith/5BKNAMJGISYQ2FSYUQ3ZKTFCLA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5BKNAMJGISYQ2FSYUQ3ZKTFCLA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:5BKNAMJGISYQ2FSYUQ3ZKTFCLA","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"77f0449e6b68c4c1a78647079adf4ba8453c75d1a40ab044f7525f22c65cf7e3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-05-08T15:06:08Z","title_canon_sha256":"7bfc3caad48a268d1687765f1dc95d12e9c4becc8edbd1282e32d1c1c00be68e"},"schema_version":"1.0","source":{"id":"1705.02907","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.02907","created_at":"2026-05-18T00:31:51Z"},{"alias_kind":"arxiv_version","alias_value":"1705.02907v2","created_at":"2026-05-18T00:31:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.02907","created_at":"2026-05-18T00:31:51Z"},{"alias_kind":"pith_short_12","alias_value":"5BKNAMJGISYQ","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"5BKNAMJGISYQ2FSY","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"5BKNAMJG","created_at":"2026-05-18T12:31:00Z"}],"graph_snapshots":[{"event_id":"sha256:c95829fd452f1a4710d89aecd1106dcd0c514bdd524cda35d4c2a7562d0bcd8f","target":"graph","created_at":"2026-05-18T00:31:51Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We report an improved measurement of the cosmic microwave background (CMB) $B$-mode polarization power spectrum with the POLARBEAR experiment at 150 GHz. By adding new data collected during the second season of observations (2013-2014) to re-analyzed data from the first season (2012-2013), we have reduced twofold the band-power uncertainties. The band powers are reported over angular multipoles $500 \\leq \\ell \\leq 2100$, where the dominant $B$-mode signal is expected to be due to the gravitational lensing of $E$-modes. We reject the null hypothesis of no $B$-mode polarization at a confidence o","authors_text":"A. Cukierman, A. Ducout, A. Gilbert, A.H. Jaffe, A. Kusaka, A. Suzuki, A.T. Lee, A. T. P. Pham, A. Zahn, B.D. Sherwin, B. Keating, C. Baccigalupi, C. Feng, C. Hill, C.L. Reichardt, C. Ross, C. Tucker, D. Barron, D. Beck, D. Boettger, D. Kaneko, D. Leon, D. Poletti, D. Tanabe, E. Linder, E.M. Leitch, F. Bianchini, F. Matsuda, G.C. Jaehnig, G. Fabbian, G. Hall, G.P. Teply, G. Puglisi, H. Nishino, H. Paar, J. Borrill, J. Errard, J. Groh, J. Montgomery, J. Peloton, K. Arnold, K. Crowley, L. Howe, L. Lowry, M. Aguilar, M. Dobbs, M. Hasegawa, M. Hazumi, M. Le Jeune, M. Navaroli, M. Silva-Feaver, N. Galitzki, N. Goeckner-Wald, N. Katayama, N. Krachmalnicoff, N. Stebor, N.W. Halverson, N. Whitehorn, O. Jeong, O. Tajima, P.L. Richards, P. Siritanasak, R. D\\\"unner, R. Keskitalo, R. Stompor, S. Chapman, S.M. Feeney, S. Takakura, S. Takatori, T. Elleflot, T. Fujino, T. Hamada, The POLARBEAR Collaboration: P.A.R. Ade, T. Kisner, T. Matsumura, T. Tomaru, Y. Akiba, Y. Chinone, Y. Inoue, Y. Minami, Y. Segawa","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-05-08T15:06:08Z","title":"A Measurement of the Cosmic Microwave Background $B$-Mode Polarization Power Spectrum at Sub-Degree Scales from 2 years of POLARBEAR Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02907","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:e50f149827ec3c1b5fe6282aab5fd871bdd067f8ad4ce2269662093c3bd0e950","target":"record","created_at":"2026-05-18T00:31:51Z","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":"77f0449e6b68c4c1a78647079adf4ba8453c75d1a40ab044f7525f22c65cf7e3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-05-08T15:06:08Z","title_canon_sha256":"7bfc3caad48a268d1687765f1dc95d12e9c4becc8edbd1282e32d1c1c00be68e"},"schema_version":"1.0","source":{"id":"1705.02907","kind":"arxiv","version":2}},"canonical_sha256":"e854d0312644b10d1658a437954ca2581984187cd38623cf10ae3de772f4a352","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e854d0312644b10d1658a437954ca2581984187cd38623cf10ae3de772f4a352","first_computed_at":"2026-05-18T00:31:51.145559Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:51.145559Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"B3XF4f/I54o0wdxGbP/ZrtWAMky+0c4VTx2/T0Y7wLG97Q9k53D9iCtPXFT1wvugWE3/XrJInpDWC1Gxcq5xBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:51.146328Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.02907","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e50f149827ec3c1b5fe6282aab5fd871bdd067f8ad4ce2269662093c3bd0e950","sha256:c95829fd452f1a4710d89aecd1106dcd0c514bdd524cda35d4c2a7562d0bcd8f"],"state_sha256":"9e2242c5c49499ef9d87fbdadcddd2018f5f293d4c87302a3681e3e882f80ae3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qRxNmticEttjI9EWIMBFFfkP1sYeQKRoaOnTHtSw0ITAEOrIsHijMDH9SodvwHSQ+Omxb1Zr8IcHvY1HWCENAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T14:00:39.800430Z","bundle_sha256":"a1c46b38cb0d0b38f37cfd8c5a1b5409d0312a5782189e5b4fd49fac30dd2c0c"}}