{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:5RZEYXUOS4JHEYJQL7EZGU74BF","short_pith_number":"pith:5RZEYXUO","canonical_record":{"source":{"id":"1207.5562","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-07-23T23:31:53Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ac67a261c80113c10795a298963667a85d2b0923c276de0a781432671a86791f","abstract_canon_sha256":"39207a38fdfc04014c3549244b17cd08fce357a747669226e27deb4150ebda63"},"schema_version":"1.0"},"canonical_sha256":"ec724c5e8e97127261305fc99353fc094d363415974d7f9fa0c136ffe0866285","source":{"kind":"arxiv","id":"1207.5562","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.5562","created_at":"2026-05-18T01:04:31Z"},{"alias_kind":"arxiv_version","alias_value":"1207.5562v2","created_at":"2026-05-18T01:04:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.5562","created_at":"2026-05-18T01:04:31Z"},{"alias_kind":"pith_short_12","alias_value":"5RZEYXUOS4JH","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"5RZEYXUOS4JHEYJQ","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"5RZEYXUO","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:5RZEYXUOS4JHEYJQL7EZGU74BF","target":"record","payload":{"canonical_record":{"source":{"id":"1207.5562","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-07-23T23:31:53Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"ac67a261c80113c10795a298963667a85d2b0923c276de0a781432671a86791f","abstract_canon_sha256":"39207a38fdfc04014c3549244b17cd08fce357a747669226e27deb4150ebda63"},"schema_version":"1.0"},"canonical_sha256":"ec724c5e8e97127261305fc99353fc094d363415974d7f9fa0c136ffe0866285","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:31.113916Z","signature_b64":"HobDVDdZTPW9Zt90Ibtel4R1vPkPReRc+XWTxmWNsw94FyioqPx8nsaHs0TOrn4j0lsflbrAGyiTvOMIGKDlDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec724c5e8e97127261305fc99353fc094d363415974d7f9fa0c136ffe0866285","last_reissued_at":"2026-05-18T01:04:31.113119Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:31.113119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.5562","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":"2026-05-18T01:04:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JAOoOd78BCdi/ALBlauPl9OlYfLUMkzq30kU9anMqZgtkw1hIrK+qwBwPigV7bWvgFUIwELxMkIo8M6IoU51DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T06:39:21.419202Z"},"content_sha256":"881c428453470f46bfc78321de9715d8ee3909ea5d3dcd9c3140a7190f640239","schema_version":"1.0","event_id":"sha256:881c428453470f46bfc78321de9715d8ee3909ea5d3dcd9c3140a7190f640239"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:5RZEYXUOS4JHEYJQL7EZGU74BF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The QUIET Instrument","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.IM","authors_text":"A. Brizius, A. C. S. Readhead, A. D. Miller, A. Kusaka, B. Winstein, C. Dickinson, C. Holler, C. R. Lawrence, D. J. Kapner, D. Samtleben, E. J. Wollack, E. M. Leitch, G. Nixon, H. K. Eriksen, H. Nguyen, I. Buder, I. K. Wehus, J. J. McMahon, J. L. Richards, J. O. Gundersen, J. T. L. Zwart, K. Cleary, K. Ishidoshiro, K. L. Thompson, K. M. Huffenberger, K. M. Smith, K. Vanderlinde, L. B. Newburgh, L. Piccirillo, M. Bogdan, M. C. Shepherd, M. E. Jones, M. Hasegawa, M. Hazumi, M. Limon, M. Nagai, M. Seiffert, O. Tajima, P. Kangaslahti, QUIET Collaboration: C. Bischoff, R. Bustos, R. Davis, R. Monsalve, R. N. Dumoulin, R. Reeves, R. Williamson, S. E. Church, S. J. E. Radford, S. K. Naess, S. T. Staggs, T. Gaier, T. J. Pearson, W. A. Imbriale, Y. Chinone","submitted_at":"2012-07-23T23:31:53Z","abstract_excerpt":"The Q/U Imaging ExperimenT (QUIET) is designed to measure polarization in the Cosmic Microwave Background, targeting the imprint of inflationary gravitational waves at large angular scales (~ 1 degree). Between 2008 October and 2010 December, two independent receiver arrays were deployed sequentially on a 1.4 m side-fed Dragonian telescope. The polarimeters which form the focal planes use a highly compact design based on High Electron Mobility Transistors (HEMTs) that provides simultaneous measurements of the Stokes parameters Q, U, and I in a single module. The 17-element Q-band polarimeter a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.5562","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":"2026-05-18T01:04:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G32B9G+LclS6pn2ntGM+35g3D1yXtPGCWhRu2YpxcmNjH8eiZOAuyLtZDGEcMvaXIw57dZLkqm2EIHN9mmWDAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T06:39:21.419947Z"},"content_sha256":"633ef4e73b68a4d5c02f6d3b6257b237d121197028ddd3c6a356dd2d955bb65a","schema_version":"1.0","event_id":"sha256:633ef4e73b68a4d5c02f6d3b6257b237d121197028ddd3c6a356dd2d955bb65a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5RZEYXUOS4JHEYJQL7EZGU74BF/bundle.json","state_url":"https://pith.science/pith/5RZEYXUOS4JHEYJQL7EZGU74BF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5RZEYXUOS4JHEYJQL7EZGU74BF/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":"2026-05-31T06:39:21Z","links":{"resolver":"https://pith.science/pith/5RZEYXUOS4JHEYJQL7EZGU74BF","bundle":"https://pith.science/pith/5RZEYXUOS4JHEYJQL7EZGU74BF/bundle.json","state":"https://pith.science/pith/5RZEYXUOS4JHEYJQL7EZGU74BF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5RZEYXUOS4JHEYJQL7EZGU74BF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:5RZEYXUOS4JHEYJQL7EZGU74BF","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":"39207a38fdfc04014c3549244b17cd08fce357a747669226e27deb4150ebda63","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-07-23T23:31:53Z","title_canon_sha256":"ac67a261c80113c10795a298963667a85d2b0923c276de0a781432671a86791f"},"schema_version":"1.0","source":{"id":"1207.5562","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.5562","created_at":"2026-05-18T01:04:31Z"},{"alias_kind":"arxiv_version","alias_value":"1207.5562v2","created_at":"2026-05-18T01:04:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.5562","created_at":"2026-05-18T01:04:31Z"},{"alias_kind":"pith_short_12","alias_value":"5RZEYXUOS4JH","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"5RZEYXUOS4JHEYJQ","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"5RZEYXUO","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:633ef4e73b68a4d5c02f6d3b6257b237d121197028ddd3c6a356dd2d955bb65a","target":"graph","created_at":"2026-05-18T01:04:31Z","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":"The Q/U Imaging ExperimenT (QUIET) is designed to measure polarization in the Cosmic Microwave Background, targeting the imprint of inflationary gravitational waves at large angular scales (~ 1 degree). Between 2008 October and 2010 December, two independent receiver arrays were deployed sequentially on a 1.4 m side-fed Dragonian telescope. The polarimeters which form the focal planes use a highly compact design based on High Electron Mobility Transistors (HEMTs) that provides simultaneous measurements of the Stokes parameters Q, U, and I in a single module. The 17-element Q-band polarimeter a","authors_text":"A. Brizius, A. C. S. Readhead, A. D. Miller, A. Kusaka, B. Winstein, C. Dickinson, C. Holler, C. R. Lawrence, D. J. Kapner, D. Samtleben, E. J. Wollack, E. M. Leitch, G. Nixon, H. K. Eriksen, H. Nguyen, I. Buder, I. K. Wehus, J. J. McMahon, J. L. Richards, J. O. Gundersen, J. T. L. Zwart, K. Cleary, K. Ishidoshiro, K. L. Thompson, K. M. Huffenberger, K. M. Smith, K. Vanderlinde, L. B. Newburgh, L. Piccirillo, M. Bogdan, M. C. Shepherd, M. E. Jones, M. Hasegawa, M. Hazumi, M. Limon, M. Nagai, M. Seiffert, O. Tajima, P. Kangaslahti, QUIET Collaboration: C. Bischoff, R. Bustos, R. Davis, R. Monsalve, R. N. Dumoulin, R. Reeves, R. Williamson, S. E. Church, S. J. E. Radford, S. K. Naess, S. T. Staggs, T. Gaier, T. J. Pearson, W. A. Imbriale, Y. Chinone","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-07-23T23:31:53Z","title":"The QUIET Instrument"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.5562","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":"sha256:881c428453470f46bfc78321de9715d8ee3909ea5d3dcd9c3140a7190f640239","target":"record","created_at":"2026-05-18T01:04:31Z","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":"39207a38fdfc04014c3549244b17cd08fce357a747669226e27deb4150ebda63","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-07-23T23:31:53Z","title_canon_sha256":"ac67a261c80113c10795a298963667a85d2b0923c276de0a781432671a86791f"},"schema_version":"1.0","source":{"id":"1207.5562","kind":"arxiv","version":2}},"canonical_sha256":"ec724c5e8e97127261305fc99353fc094d363415974d7f9fa0c136ffe0866285","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec724c5e8e97127261305fc99353fc094d363415974d7f9fa0c136ffe0866285","first_computed_at":"2026-05-18T01:04:31.113119Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:31.113119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HobDVDdZTPW9Zt90Ibtel4R1vPkPReRc+XWTxmWNsw94FyioqPx8nsaHs0TOrn4j0lsflbrAGyiTvOMIGKDlDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:31.113916Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.5562","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:881c428453470f46bfc78321de9715d8ee3909ea5d3dcd9c3140a7190f640239","sha256:633ef4e73b68a4d5c02f6d3b6257b237d121197028ddd3c6a356dd2d955bb65a"],"state_sha256":"be9b2c43f6af6d9ce72b2015c1d7040bf81d6374d86e12c6c5e7e973a3eafba7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EACNSMuFJt0HRV36GlqsqFKUNhvtptRvnODs5+2e5nvhlJW+xQzk4YmI8SRDaFSHKpxTKCd72bQy6Y8gltU5Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T06:39:21.423761Z","bundle_sha256":"76655f25dfad6caf0de93e03e64fe6d7eee64179010458964976923cc0639014"}}