{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:XXNJHDEA2QCUGRXWR45FUXLWFX","short_pith_number":"pith:XXNJHDEA","canonical_record":{"source":{"id":"1412.1111","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-11-24T19:59:27Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"title_canon_sha256":"48643292dbc74f74e74d596ca901e58c09ddd88f54f55a7b32b54b3005071fd2","abstract_canon_sha256":"f50593fb3405343a0b764c27c41764f55c77d413151924cba5b044c0ea19bfb7"},"schema_version":"1.0"},"canonical_sha256":"bdda938c80d4054346f68f3a5a5d762dda6156685dab62a6e2e9eb5b81cb70d0","source":{"kind":"arxiv","id":"1412.1111","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.1111","created_at":"2026-05-18T01:16:19Z"},{"alias_kind":"arxiv_version","alias_value":"1412.1111v1","created_at":"2026-05-18T01:16:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.1111","created_at":"2026-05-18T01:16:19Z"},{"alias_kind":"pith_short_12","alias_value":"XXNJHDEA2QCU","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XXNJHDEA2QCUGRXW","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XXNJHDEA","created_at":"2026-05-18T12:28:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:XXNJHDEA2QCUGRXWR45FUXLWFX","target":"record","payload":{"canonical_record":{"source":{"id":"1412.1111","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-11-24T19:59:27Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"title_canon_sha256":"48643292dbc74f74e74d596ca901e58c09ddd88f54f55a7b32b54b3005071fd2","abstract_canon_sha256":"f50593fb3405343a0b764c27c41764f55c77d413151924cba5b044c0ea19bfb7"},"schema_version":"1.0"},"canonical_sha256":"bdda938c80d4054346f68f3a5a5d762dda6156685dab62a6e2e9eb5b81cb70d0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:19.052941Z","signature_b64":"CykpJXXmUDJOhlvP7Pxo0YqCResTxQoYT1whz1IgPgMe9lGKmICs5wz8OCvXg8+DcKvdvqPD8X2TQyw3/O3IBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bdda938c80d4054346f68f3a5a5d762dda6156685dab62a6e2e9eb5b81cb70d0","last_reissued_at":"2026-05-18T01:16:19.052305Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:19.052305Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.1111","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:16:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IeNYoi577aiKxAxInC9taAx5R4AQjugE6C9oYVqbqEsYaPbcUmoLL2A7wTUZSREY7fcjA7dQjkIMbnM1gxVqBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:27:26.447781Z"},"content_sha256":"0ade2ec9aeb99c2d8fd09529189293a65fd7abd51e9c5d2b874fc5fb4adf773a","schema_version":"1.0","event_id":"sha256:0ade2ec9aeb99c2d8fd09529189293a65fd7abd51e9c5d2b874fc5fb4adf773a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:XXNJHDEA2QCUGRXWR45FUXLWFX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Q/U Imaging Experiment: Polarization Measurements of Radio Sources at 43 and 95 GHz","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"A. C. S. Readhead, A. D. Miller, A. Kusaka, C. Bischoff, C. Dickinson, D. Araujo, H. K. Eriksen, I. Buder, I. K. Wehus, J. O. Gundersen, J. T. L. Zwart, K. Cleary, K. L. Thompson, L. B. Newburgh, M. Hasegawa, M. Hazumi, O. Tajima, QUIET Collaboration: K. M. Huffenberger, R. Monsalve, R. Reeves, S. J. E. Radford, S. K. N{\\ae}ss, S. T. Staggs, T. Gaier, T. M. Ruud, Y. Chinone","submitted_at":"2014-11-24T19:59:27Z","abstract_excerpt":"We present polarization measurements of extragalactic radio sources observed during the Cosmic Microwave Background polarization survey of the Q/U Imaging Experiment (QUIET), operating at 43 GHz (Q-band) and 95 GHz (W-band). We examine sources selected at 20 GHz from the public, $>$40 mJy catalog of the Australia Telescope (AT20G) survey. There are $\\sim$480 such sources within QUIET's four low-foreground survey patches, including the nearby radio galaxies Centaurus A and Pictor A. The median error on our polarized flux density measurements is 30--40 mJy per Stokes parameter. At S/N $> 3$ sign"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.1111","kind":"arxiv","version":1},"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":"2026-05-18T01:16:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9MoZNPqhuUdeSwujadY+7FyJzQfKOc8fF/OWvIP5qUeuAG5ILuxHLeCY74JRltEvNcYLTfVUlKPxGZ0pJCQvDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T23:27:26.448422Z"},"content_sha256":"c0c10b772e8bea18c2f302e095efabef76e6cd3023b75757f62701735e655de1","schema_version":"1.0","event_id":"sha256:c0c10b772e8bea18c2f302e095efabef76e6cd3023b75757f62701735e655de1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XXNJHDEA2QCUGRXWR45FUXLWFX/bundle.json","state_url":"https://pith.science/pith/XXNJHDEA2QCUGRXWR45FUXLWFX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XXNJHDEA2QCUGRXWR45FUXLWFX/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":"2026-05-31T23:27:26Z","links":{"resolver":"https://pith.science/pith/XXNJHDEA2QCUGRXWR45FUXLWFX","bundle":"https://pith.science/pith/XXNJHDEA2QCUGRXWR45FUXLWFX/bundle.json","state":"https://pith.science/pith/XXNJHDEA2QCUGRXWR45FUXLWFX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XXNJHDEA2QCUGRXWR45FUXLWFX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:XXNJHDEA2QCUGRXWR45FUXLWFX","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":"f50593fb3405343a0b764c27c41764f55c77d413151924cba5b044c0ea19bfb7","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-11-24T19:59:27Z","title_canon_sha256":"48643292dbc74f74e74d596ca901e58c09ddd88f54f55a7b32b54b3005071fd2"},"schema_version":"1.0","source":{"id":"1412.1111","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.1111","created_at":"2026-05-18T01:16:19Z"},{"alias_kind":"arxiv_version","alias_value":"1412.1111v1","created_at":"2026-05-18T01:16:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.1111","created_at":"2026-05-18T01:16:19Z"},{"alias_kind":"pith_short_12","alias_value":"XXNJHDEA2QCU","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XXNJHDEA2QCUGRXW","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XXNJHDEA","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:c0c10b772e8bea18c2f302e095efabef76e6cd3023b75757f62701735e655de1","target":"graph","created_at":"2026-05-18T01:16:19Z","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 present polarization measurements of extragalactic radio sources observed during the Cosmic Microwave Background polarization survey of the Q/U Imaging Experiment (QUIET), operating at 43 GHz (Q-band) and 95 GHz (W-band). We examine sources selected at 20 GHz from the public, $>$40 mJy catalog of the Australia Telescope (AT20G) survey. There are $\\sim$480 such sources within QUIET's four low-foreground survey patches, including the nearby radio galaxies Centaurus A and Pictor A. The median error on our polarized flux density measurements is 30--40 mJy per Stokes parameter. At S/N $> 3$ sign","authors_text":"A. C. S. Readhead, A. D. Miller, A. Kusaka, C. Bischoff, C. Dickinson, D. Araujo, H. K. Eriksen, I. Buder, I. K. Wehus, J. O. Gundersen, J. T. L. Zwart, K. Cleary, K. L. Thompson, L. B. Newburgh, M. Hasegawa, M. Hazumi, O. Tajima, QUIET Collaboration: K. M. Huffenberger, R. Monsalve, R. Reeves, S. J. E. Radford, S. K. N{\\ae}ss, S. T. Staggs, T. Gaier, T. M. Ruud, Y. Chinone","cross_cats":["astro-ph.CO","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-11-24T19:59:27Z","title":"The Q/U Imaging Experiment: Polarization Measurements of Radio Sources at 43 and 95 GHz"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.1111","kind":"arxiv","version":1},"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":"sha256:0ade2ec9aeb99c2d8fd09529189293a65fd7abd51e9c5d2b874fc5fb4adf773a","target":"record","created_at":"2026-05-18T01:16:19Z","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":"f50593fb3405343a0b764c27c41764f55c77d413151924cba5b044c0ea19bfb7","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-11-24T19:59:27Z","title_canon_sha256":"48643292dbc74f74e74d596ca901e58c09ddd88f54f55a7b32b54b3005071fd2"},"schema_version":"1.0","source":{"id":"1412.1111","kind":"arxiv","version":1}},"canonical_sha256":"bdda938c80d4054346f68f3a5a5d762dda6156685dab62a6e2e9eb5b81cb70d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bdda938c80d4054346f68f3a5a5d762dda6156685dab62a6e2e9eb5b81cb70d0","first_computed_at":"2026-05-18T01:16:19.052305Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:19.052305Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CykpJXXmUDJOhlvP7Pxo0YqCResTxQoYT1whz1IgPgMe9lGKmICs5wz8OCvXg8+DcKvdvqPD8X2TQyw3/O3IBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:19.052941Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.1111","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0ade2ec9aeb99c2d8fd09529189293a65fd7abd51e9c5d2b874fc5fb4adf773a","sha256:c0c10b772e8bea18c2f302e095efabef76e6cd3023b75757f62701735e655de1"],"state_sha256":"417e791c4089cba377090bc3bec8116477739b6f4452d46801847ea0c4e9836a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h9s2AfTQ/U5iGmB14d+n54bfpjqD9xcDlpAC+AaIC6jboRYtpupr5a9C9uJZqUzwfjD6XDigvtNJnLJVLDKzCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T23:27:26.451726Z","bundle_sha256":"3ba625ea1c292ea4a007bfa876e6267830b7fa824269f69a9263cc3f34c3e0fe"}}