{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:OAHMQEIEGPF2IYTUWDSU4XYX4E","short_pith_number":"pith:OAHMQEIE","canonical_record":{"source":{"id":"1908.04313","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-12T18:03:40Z","cross_cats_sorted":[],"title_canon_sha256":"b9673e8456f811de0c72fbb554b123727937df7ced1014343b0c099e4de0edf5","abstract_canon_sha256":"227af80fcd22e6311fb5eb0f238bc18fb0c1879b06478805bd9afe6496c6c01d"},"schema_version":"1.0"},"canonical_sha256":"700ec8110433cba46274b0e54e5f17e118dbd38cee004f2b4d17560d6deefd4c","source":{"kind":"arxiv","id":"1908.04313","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.04313","created_at":"2026-07-05T00:25:13Z"},{"alias_kind":"arxiv_version","alias_value":"1908.04313v1","created_at":"2026-07-05T00:25:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.04313","created_at":"2026-07-05T00:25:13Z"},{"alias_kind":"pith_short_12","alias_value":"OAHMQEIEGPF2","created_at":"2026-07-05T00:25:13Z"},{"alias_kind":"pith_short_16","alias_value":"OAHMQEIEGPF2IYTU","created_at":"2026-07-05T00:25:13Z"},{"alias_kind":"pith_short_8","alias_value":"OAHMQEIE","created_at":"2026-07-05T00:25:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:OAHMQEIEGPF2IYTUWDSU4XYX4E","target":"record","payload":{"canonical_record":{"source":{"id":"1908.04313","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-12T18:03:40Z","cross_cats_sorted":[],"title_canon_sha256":"b9673e8456f811de0c72fbb554b123727937df7ced1014343b0c099e4de0edf5","abstract_canon_sha256":"227af80fcd22e6311fb5eb0f238bc18fb0c1879b06478805bd9afe6496c6c01d"},"schema_version":"1.0"},"canonical_sha256":"700ec8110433cba46274b0e54e5f17e118dbd38cee004f2b4d17560d6deefd4c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:25:13.493615Z","signature_b64":"rI8cWcLEwvIOWJgJ0nMyT9THkTaYoShr3VfjBCeCpoavcRuk9MH4xP/ltOOmmHH+MybldxjXtwWjrcKEhKe8BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"700ec8110433cba46274b0e54e5f17e118dbd38cee004f2b4d17560d6deefd4c","last_reissued_at":"2026-07-05T00:25:13.493172Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:25:13.493172Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.04313","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":"2026-07-05T00:25:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CHrQawo4EaITAx22StSDZiIrJgKMMdyRMQinNFzJPH1QTCTfL9Y755bh+OEFV0umVqefMuhY76zZkzdGRUr8DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T09:37:07.071234Z"},"content_sha256":"c4b2d193b59f58112f3b40447ca2b8602e26a0fddfa11a6cfbe055301bdf297c","schema_version":"1.0","event_id":"sha256:c4b2d193b59f58112f3b40447ca2b8602e26a0fddfa11a6cfbe055301bdf297c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:OAHMQEIEGPF2IYTUWDSU4XYX4E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Parity-Violating Gravity and GW170817 in Non-Riemannian Cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Aindri\\'u Conroy, Tomi Koivisto","submitted_at":"2019-08-12T18:03:40Z","abstract_excerpt":"The cosmological propagation of tensor perturbations is studied in the context of parity-violating extensions of the symmetric teleparallel equivalent of General Relativity theory. This non-Riemannian formulation allows for a wider variety of consistent extensions than the metric formulation of gravity theory. It is found that while many of the possible quadratic terms do not influence the propagation of the gravitational waves, a generic modification predicts a signature that distinguishes the left- and right-handed circular polarizations. The parameters of such modifications can be constrain"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.04313","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.04313/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":"2026-07-05T00:25:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZkL++asXV72ObqaJhPix06p6mt8XuzipdU/B47K3OmRqoXpyp7AUBKn7asywlRSCqz1phf3bfIiF6pIsUABQBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T09:37:07.071766Z"},"content_sha256":"b5a9af55bbda0685b1c7d5e1cc9fe3966eb42498e94fde0f3281aaf047bcc8be","schema_version":"1.0","event_id":"sha256:b5a9af55bbda0685b1c7d5e1cc9fe3966eb42498e94fde0f3281aaf047bcc8be"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OAHMQEIEGPF2IYTUWDSU4XYX4E/bundle.json","state_url":"https://pith.science/pith/OAHMQEIEGPF2IYTUWDSU4XYX4E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OAHMQEIEGPF2IYTUWDSU4XYX4E/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":"2026-08-20T09:37:07Z","links":{"resolver":"https://pith.science/pith/OAHMQEIEGPF2IYTUWDSU4XYX4E","bundle":"https://pith.science/pith/OAHMQEIEGPF2IYTUWDSU4XYX4E/bundle.json","state":"https://pith.science/pith/OAHMQEIEGPF2IYTUWDSU4XYX4E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OAHMQEIEGPF2IYTUWDSU4XYX4E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:OAHMQEIEGPF2IYTUWDSU4XYX4E","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":"227af80fcd22e6311fb5eb0f238bc18fb0c1879b06478805bd9afe6496c6c01d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-12T18:03:40Z","title_canon_sha256":"b9673e8456f811de0c72fbb554b123727937df7ced1014343b0c099e4de0edf5"},"schema_version":"1.0","source":{"id":"1908.04313","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.04313","created_at":"2026-07-05T00:25:13Z"},{"alias_kind":"arxiv_version","alias_value":"1908.04313v1","created_at":"2026-07-05T00:25:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.04313","created_at":"2026-07-05T00:25:13Z"},{"alias_kind":"pith_short_12","alias_value":"OAHMQEIEGPF2","created_at":"2026-07-05T00:25:13Z"},{"alias_kind":"pith_short_16","alias_value":"OAHMQEIEGPF2IYTU","created_at":"2026-07-05T00:25:13Z"},{"alias_kind":"pith_short_8","alias_value":"OAHMQEIE","created_at":"2026-07-05T00:25:13Z"}],"graph_snapshots":[{"event_id":"sha256:b5a9af55bbda0685b1c7d5e1cc9fe3966eb42498e94fde0f3281aaf047bcc8be","target":"graph","created_at":"2026-07-05T00:25:13Z","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/1908.04313/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The cosmological propagation of tensor perturbations is studied in the context of parity-violating extensions of the symmetric teleparallel equivalent of General Relativity theory. This non-Riemannian formulation allows for a wider variety of consistent extensions than the metric formulation of gravity theory. It is found that while many of the possible quadratic terms do not influence the propagation of the gravitational waves, a generic modification predicts a signature that distinguishes the left- and right-handed circular polarizations. The parameters of such modifications can be constrain","authors_text":"Aindri\\'u Conroy, Tomi Koivisto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-12T18:03:40Z","title":"Parity-Violating Gravity and GW170817 in Non-Riemannian Cosmology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.04313","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:c4b2d193b59f58112f3b40447ca2b8602e26a0fddfa11a6cfbe055301bdf297c","target":"record","created_at":"2026-07-05T00:25:13Z","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":"227af80fcd22e6311fb5eb0f238bc18fb0c1879b06478805bd9afe6496c6c01d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-12T18:03:40Z","title_canon_sha256":"b9673e8456f811de0c72fbb554b123727937df7ced1014343b0c099e4de0edf5"},"schema_version":"1.0","source":{"id":"1908.04313","kind":"arxiv","version":1}},"canonical_sha256":"700ec8110433cba46274b0e54e5f17e118dbd38cee004f2b4d17560d6deefd4c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"700ec8110433cba46274b0e54e5f17e118dbd38cee004f2b4d17560d6deefd4c","first_computed_at":"2026-07-05T00:25:13.493172Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:25:13.493172Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rI8cWcLEwvIOWJgJ0nMyT9THkTaYoShr3VfjBCeCpoavcRuk9MH4xP/ltOOmmHH+MybldxjXtwWjrcKEhKe8BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:25:13.493615Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.04313","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c4b2d193b59f58112f3b40447ca2b8602e26a0fddfa11a6cfbe055301bdf297c","sha256:b5a9af55bbda0685b1c7d5e1cc9fe3966eb42498e94fde0f3281aaf047bcc8be"],"state_sha256":"40995bfe56ba348fc515139b290dc8952ae7ab9a34450395e6ec93d687e4d38a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IyfPn5e4m8+tQIUKR00ZtyLxTZqkD67qMI5niUzl3eEKG7iJ0D8gfLMZfu2IAclPCxPNzlLFWQMHkY8kPJKJDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T09:37:07.075732Z","bundle_sha256":"40ad3c8ff3acdffd2620723d2f85b3b0191a5882517a2fe2511ee9acb9e49f87"}}