{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:BNKK63IUBSRNTZRGKSWESLNTBL","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":"2a929685963002d18223175c0095e1af2de88f20c7fb2a7a646e8f4276ee21f4","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-04-16T17:59:30Z","title_canon_sha256":"2045d67534f0e38ff3ccaa93d653d041d5325511865f96d9262c6711a5cc326b"},"schema_version":"1.0","source":{"id":"1904.07855","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.07855","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"arxiv_version","alias_value":"1904.07855v2","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.07855","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"pith_short_12","alias_value":"BNKK63IUBSRN","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BNKK63IUBSRNTZRG","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BNKK63IU","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:e18c0d127af19be19d1fa63c0c2f5ba1603626004c1c6608ca29175538f8a38d","target":"graph","created_at":"2026-05-17T23:40:32Z","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 primary scientific target of the CMB polarization experiments that are currently being built and proposed is the detection of primordial tensor perturbations. As a byproduct, these instruments will significantly improve constraints on cosmic birefringence, or the rotation of the CMB polarization plane. If convincingly detected, cosmic birefringence would be a dramatic manifestation of physics beyond the standard models of particle physics and cosmology. We forecast the bounds on the cosmic polarization rotation (CPR) from the upcoming ground-based Simons Observatory (SO) and the space-base","authors_text":"Brian Keating, Levon Pogosian, Matthew Mewes, Meir Shimon","cross_cats":["hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-04-16T17:59:30Z","title":"Future CMB constraints on cosmic birefringence and implications for fundamental physics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.07855","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":"sha256:346eee91a565d63c40ae8813b42cabbb0198a9ce60209f24ce01638e2db0cedb","target":"record","created_at":"2026-05-17T23:40:32Z","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":"2a929685963002d18223175c0095e1af2de88f20c7fb2a7a646e8f4276ee21f4","cross_cats_sorted":["hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-04-16T17:59:30Z","title_canon_sha256":"2045d67534f0e38ff3ccaa93d653d041d5325511865f96d9262c6711a5cc326b"},"schema_version":"1.0","source":{"id":"1904.07855","kind":"arxiv","version":2}},"canonical_sha256":"0b54af6d140ca2d9e62654ac492db30ac47f732dbbfa8ea5dedfa746598cbb10","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b54af6d140ca2d9e62654ac492db30ac47f732dbbfa8ea5dedfa746598cbb10","first_computed_at":"2026-05-17T23:40:32.579696Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:32.579696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cdg6Hvl/zcttU1dzdCAamad1Ak4xuywn/dUCLKjDtUNHIlctz6AQj8us7u7eu+vgINJ/S1FW22C8lvoelZVIDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:32.580266Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.07855","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:346eee91a565d63c40ae8813b42cabbb0198a9ce60209f24ce01638e2db0cedb","sha256:e18c0d127af19be19d1fa63c0c2f5ba1603626004c1c6608ca29175538f8a38d"],"state_sha256":"0e0d8e27369fca9861d8b4808104cbdf376acc7c81abbc82a35da4087cb0ec0b"}