{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:IBQPYPZUCB7YZNMA7W7ZV44YAR","short_pith_number":"pith:IBQPYPZU","canonical_record":{"source":{"id":"2303.08410","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-03-15T07:22:16Z","cross_cats_sorted":[],"title_canon_sha256":"9e3968fff2015594cc9a11ef4fa2852ef639d9ebc096c577e99557cfa4c32fd1","abstract_canon_sha256":"038dc6fe565c8a0f5ee012916907ba04ef9abaebc1f8b3d36fdbe2836c3477ac"},"schema_version":"1.0"},"canonical_sha256":"4060fc3f34107f8cb580fdbf9af39804438c89301ca30b8e07de4f307b020877","source":{"kind":"arxiv","id":"2303.08410","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.08410","created_at":"2026-07-05T06:46:46Z"},{"alias_kind":"arxiv_version","alias_value":"2303.08410v2","created_at":"2026-07-05T06:46:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.08410","created_at":"2026-07-05T06:46:46Z"},{"alias_kind":"pith_short_12","alias_value":"IBQPYPZUCB7Y","created_at":"2026-07-05T06:46:46Z"},{"alias_kind":"pith_short_16","alias_value":"IBQPYPZUCB7YZNMA","created_at":"2026-07-05T06:46:46Z"},{"alias_kind":"pith_short_8","alias_value":"IBQPYPZU","created_at":"2026-07-05T06:46:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:IBQPYPZUCB7YZNMA7W7ZV44YAR","target":"record","payload":{"canonical_record":{"source":{"id":"2303.08410","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-03-15T07:22:16Z","cross_cats_sorted":[],"title_canon_sha256":"9e3968fff2015594cc9a11ef4fa2852ef639d9ebc096c577e99557cfa4c32fd1","abstract_canon_sha256":"038dc6fe565c8a0f5ee012916907ba04ef9abaebc1f8b3d36fdbe2836c3477ac"},"schema_version":"1.0"},"canonical_sha256":"4060fc3f34107f8cb580fdbf9af39804438c89301ca30b8e07de4f307b020877","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:46:46.709504Z","signature_b64":"0xfs+AJqqQxr3O2ebJ7r9axtAXInUZ1P3tY6Q7ehlX11G6H/coWsw64eqnMG5Mk17RgvQV3h2+DalPh6RGlDCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4060fc3f34107f8cb580fdbf9af39804438c89301ca30b8e07de4f307b020877","last_reissued_at":"2026-07-05T06:46:46.708934Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:46:46.708934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2303.08410","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":"2026-07-05T06:46:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w0/0K/Q1oVfzJ+8SiXhsXCDm2VsuxN8eaz8u0Ozw0KAdv+Hg240pshDg9z5opFUWyq8ZyLQ45D8/zTjWhBcQDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T13:53:40.643679Z"},"content_sha256":"486467c8de2eecf5c4b84ce225a1eec5b25ff1b1ebe350b2da5d7cebf7af2820","schema_version":"1.0","event_id":"sha256:486467c8de2eecf5c4b84ce225a1eec5b25ff1b1ebe350b2da5d7cebf7af2820"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:IBQPYPZUCB7YZNMA7W7ZV44YAR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraints on axion-like polarization oscillations in the cosmic microwave background with POLARBEAR","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Adrian T. Lee, Akito Kusaka, Brian Keating, Carlo Baccigalupi, Chang Feng, Christian L. Reichardt, Daisuke Kaneko, Daniel Green, Darcy Barron, Giulio Fabbian, Grant Paul Teply, Haruki Nishino, Jacob Spisak, Josquin Errard, Kam Arnold, Kevin T. Crowley, Kolen Cheung, Kyohei Yamada, Masashi Hazumi, Masaya Hasegawa, Nobuhiko Katayama, Osamu Tajima, Praween Siritanasak, Raphael Flauger, Satoru Takakura, Sayuri Takatori, Takuro Fujino, The POLARBEAR Collaboration: Shunsuke Adachi, Tylor Adkins, Yuji Chinone, Yuto Minami","submitted_at":"2023-03-15T07:22:16Z","abstract_excerpt":"Very light pseudoscalar fields, often referred to as axions, are compelling dark matter candidates and can potentially be detected through their coupling to the electromagnetic field. Recently a novel detection technique using the cosmic microwave background (CMB) was proposed, which relies on the fact that the axion field oscillates at a frequency equal to its mass in appropriate units, leading to a time-dependent birefringence. For appropriate oscillation periods this allows the axion field at the telescope to be detected via the induced sinusoidal oscillation of the CMB linear polarization."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.08410","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2303.08410/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:46:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9wv/pfaxo17V+7Oh+aAlTfxondWa++pfpEhXRAyBD8jnvX1SlIgTGXknSfoxUJHRh7Q/lHigd4OI0Gm9v7UHCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T13:53:40.644028Z"},"content_sha256":"2f7837676dfd4cda8c9246280cef3725a1c50210be1be63c1cdaafe161a2b646","schema_version":"1.0","event_id":"sha256:2f7837676dfd4cda8c9246280cef3725a1c50210be1be63c1cdaafe161a2b646"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IBQPYPZUCB7YZNMA7W7ZV44YAR/bundle.json","state_url":"https://pith.science/pith/IBQPYPZUCB7YZNMA7W7ZV44YAR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IBQPYPZUCB7YZNMA7W7ZV44YAR/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":"2026-08-14T13:53:40Z","links":{"resolver":"https://pith.science/pith/IBQPYPZUCB7YZNMA7W7ZV44YAR","bundle":"https://pith.science/pith/IBQPYPZUCB7YZNMA7W7ZV44YAR/bundle.json","state":"https://pith.science/pith/IBQPYPZUCB7YZNMA7W7ZV44YAR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IBQPYPZUCB7YZNMA7W7ZV44YAR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:IBQPYPZUCB7YZNMA7W7ZV44YAR","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":"038dc6fe565c8a0f5ee012916907ba04ef9abaebc1f8b3d36fdbe2836c3477ac","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-03-15T07:22:16Z","title_canon_sha256":"9e3968fff2015594cc9a11ef4fa2852ef639d9ebc096c577e99557cfa4c32fd1"},"schema_version":"1.0","source":{"id":"2303.08410","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.08410","created_at":"2026-07-05T06:46:46Z"},{"alias_kind":"arxiv_version","alias_value":"2303.08410v2","created_at":"2026-07-05T06:46:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.08410","created_at":"2026-07-05T06:46:46Z"},{"alias_kind":"pith_short_12","alias_value":"IBQPYPZUCB7Y","created_at":"2026-07-05T06:46:46Z"},{"alias_kind":"pith_short_16","alias_value":"IBQPYPZUCB7YZNMA","created_at":"2026-07-05T06:46:46Z"},{"alias_kind":"pith_short_8","alias_value":"IBQPYPZU","created_at":"2026-07-05T06:46:46Z"}],"graph_snapshots":[{"event_id":"sha256:2f7837676dfd4cda8c9246280cef3725a1c50210be1be63c1cdaafe161a2b646","target":"graph","created_at":"2026-07-05T06:46:46Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2303.08410/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Very light pseudoscalar fields, often referred to as axions, are compelling dark matter candidates and can potentially be detected through their coupling to the electromagnetic field. Recently a novel detection technique using the cosmic microwave background (CMB) was proposed, which relies on the fact that the axion field oscillates at a frequency equal to its mass in appropriate units, leading to a time-dependent birefringence. For appropriate oscillation periods this allows the axion field at the telescope to be detected via the induced sinusoidal oscillation of the CMB linear polarization.","authors_text":"Adrian T. Lee, Akito Kusaka, Brian Keating, Carlo Baccigalupi, Chang Feng, Christian L. Reichardt, Daisuke Kaneko, Daniel Green, Darcy Barron, Giulio Fabbian, Grant Paul Teply, Haruki Nishino, Jacob Spisak, Josquin Errard, Kam Arnold, Kevin T. Crowley, Kolen Cheung, Kyohei Yamada, Masashi Hazumi, Masaya Hasegawa, Nobuhiko Katayama, Osamu Tajima, Praween Siritanasak, Raphael Flauger, Satoru Takakura, Sayuri Takatori, Takuro Fujino, The POLARBEAR Collaboration: Shunsuke Adachi, Tylor Adkins, Yuji Chinone, Yuto Minami","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-03-15T07:22:16Z","title":"Constraints on axion-like polarization oscillations in the cosmic microwave background with POLARBEAR"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.08410","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":"sha256:486467c8de2eecf5c4b84ce225a1eec5b25ff1b1ebe350b2da5d7cebf7af2820","target":"record","created_at":"2026-07-05T06:46:46Z","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":"038dc6fe565c8a0f5ee012916907ba04ef9abaebc1f8b3d36fdbe2836c3477ac","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2023-03-15T07:22:16Z","title_canon_sha256":"9e3968fff2015594cc9a11ef4fa2852ef639d9ebc096c577e99557cfa4c32fd1"},"schema_version":"1.0","source":{"id":"2303.08410","kind":"arxiv","version":2}},"canonical_sha256":"4060fc3f34107f8cb580fdbf9af39804438c89301ca30b8e07de4f307b020877","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4060fc3f34107f8cb580fdbf9af39804438c89301ca30b8e07de4f307b020877","first_computed_at":"2026-07-05T06:46:46.708934Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:46:46.708934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0xfs+AJqqQxr3O2ebJ7r9axtAXInUZ1P3tY6Q7ehlX11G6H/coWsw64eqnMG5Mk17RgvQV3h2+DalPh6RGlDCw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:46:46.709504Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.08410","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:486467c8de2eecf5c4b84ce225a1eec5b25ff1b1ebe350b2da5d7cebf7af2820","sha256:2f7837676dfd4cda8c9246280cef3725a1c50210be1be63c1cdaafe161a2b646"],"state_sha256":"4777b032284d8b8048f2b6afcca49f949dfa53c8718c14cadfb70af388f9023a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"trwtRNrZxKVfpKPvYY/lGTNU4AV/6uEIt2YbB1yWFM30sQPb3pCg9J+VUcaYiT8m0n+yUmg0hsqjzH1+48zoAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T13:53:40.647234Z","bundle_sha256":"8bd901ebf5a2bc63c0a4253254cc58cb74484ae5581af02383144a6a7b848c72"}}