{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:SSE4MCXJ32M2MEUHIP44JNS66E","short_pith_number":"pith:SSE4MCXJ","canonical_record":{"source":{"id":"2010.04131","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-10-08T17:18:05Z","cross_cats_sorted":[],"title_canon_sha256":"84f2df88982ffabe5107854dd928f722500f26880912d8da8d01f6f36a79c297","abstract_canon_sha256":"a1c4ece990caaa1be632c43bebed653a371e4f4b6585b86feda3d16ffba6be23"},"schema_version":"1.0"},"canonical_sha256":"9489c60ae9de99a6128743f9c4b65ef13f17fa425e617113cefd97f548a54c20","source":{"kind":"arxiv","id":"2010.04131","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.04131","created_at":"2026-07-05T02:49:12Z"},{"alias_kind":"arxiv_version","alias_value":"2010.04131v2","created_at":"2026-07-05T02:49:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.04131","created_at":"2026-07-05T02:49:12Z"},{"alias_kind":"pith_short_12","alias_value":"SSE4MCXJ32M2","created_at":"2026-07-05T02:49:12Z"},{"alias_kind":"pith_short_16","alias_value":"SSE4MCXJ32M2MEUH","created_at":"2026-07-05T02:49:12Z"},{"alias_kind":"pith_short_8","alias_value":"SSE4MCXJ","created_at":"2026-07-05T02:49:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:SSE4MCXJ32M2MEUHIP44JNS66E","target":"record","payload":{"canonical_record":{"source":{"id":"2010.04131","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-10-08T17:18:05Z","cross_cats_sorted":[],"title_canon_sha256":"84f2df88982ffabe5107854dd928f722500f26880912d8da8d01f6f36a79c297","abstract_canon_sha256":"a1c4ece990caaa1be632c43bebed653a371e4f4b6585b86feda3d16ffba6be23"},"schema_version":"1.0"},"canonical_sha256":"9489c60ae9de99a6128743f9c4b65ef13f17fa425e617113cefd97f548a54c20","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:49:12.998717Z","signature_b64":"Eca6yJ4mDQe6DzbZZAdKgsBFX8xZ+mIJoilZ1/maXY/MALuCCKYihBifCz3XnGguc5QJhU8ylpkeTT7yvNUpAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9489c60ae9de99a6128743f9c4b65ef13f17fa425e617113cefd97f548a54c20","last_reissued_at":"2026-07-05T02:49:12.998260Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:49:12.998260Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2010.04131","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":"2026-07-05T02:49:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q1lKMQrlRH+zwVOdelUWGrx9OL5x++ZQmiQCcRo+D4NJtKOBHKivsSDxeRnbZMZFar8H9GVh3cp9L3qBgnp7Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T22:59:31.667083Z"},"content_sha256":"ac4b604136181ef7555380ed2e42d6c97f25b52494cf972b497abbf6eb5cf3f7","schema_version":"1.0","event_id":"sha256:ac4b604136181ef7555380ed2e42d6c97f25b52494cf972b497abbf6eb5cf3f7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:SSE4MCXJ32M2MEUHIP44JNS66E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Identifying when Precession can be Measured in Gravitational Waveforms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Charlie Hoy, Cory Thomas, Francesco Pannarale, Mark Hannam, Rhys Green, Stephen Fairhurst","submitted_at":"2020-10-08T17:18:05Z","abstract_excerpt":"In binary-black-hole systems where the black-hole spins are misaligned with the orbital angular momentum, precession effects leave characteristic modulations in the emitted gravitational waveform. Here, we investigate where in the parameter space we will be able to accurately identify precession, for likely observations over coming LIGO-Virgo-KAGRA observing runs. Despite the large number of parameters that characterise a precessing binary, we perform a large scale systematic study to identify the impact of each source parameter on the measurement of precession. We simulate a fiducial binary a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.04131","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/2010.04131/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":"2026-07-05T02:49:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nKgYs8DczE1u+65bRAYWaHZznmrlj8oizn6KN4fkE7q9I+FnveKmdMb/RBVLbddETNZWW4+qoPkqYJ7ztCyyDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T22:59:31.667469Z"},"content_sha256":"394fa6bc76722b16acfcbd7f2068d10fb8fd84acb7b8e9a1938b4e36184d76ab","schema_version":"1.0","event_id":"sha256:394fa6bc76722b16acfcbd7f2068d10fb8fd84acb7b8e9a1938b4e36184d76ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SSE4MCXJ32M2MEUHIP44JNS66E/bundle.json","state_url":"https://pith.science/pith/SSE4MCXJ32M2MEUHIP44JNS66E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SSE4MCXJ32M2MEUHIP44JNS66E/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":"2026-07-15T22:59:31Z","links":{"resolver":"https://pith.science/pith/SSE4MCXJ32M2MEUHIP44JNS66E","bundle":"https://pith.science/pith/SSE4MCXJ32M2MEUHIP44JNS66E/bundle.json","state":"https://pith.science/pith/SSE4MCXJ32M2MEUHIP44JNS66E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SSE4MCXJ32M2MEUHIP44JNS66E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:SSE4MCXJ32M2MEUHIP44JNS66E","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":"a1c4ece990caaa1be632c43bebed653a371e4f4b6585b86feda3d16ffba6be23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-10-08T17:18:05Z","title_canon_sha256":"84f2df88982ffabe5107854dd928f722500f26880912d8da8d01f6f36a79c297"},"schema_version":"1.0","source":{"id":"2010.04131","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.04131","created_at":"2026-07-05T02:49:12Z"},{"alias_kind":"arxiv_version","alias_value":"2010.04131v2","created_at":"2026-07-05T02:49:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.04131","created_at":"2026-07-05T02:49:12Z"},{"alias_kind":"pith_short_12","alias_value":"SSE4MCXJ32M2","created_at":"2026-07-05T02:49:12Z"},{"alias_kind":"pith_short_16","alias_value":"SSE4MCXJ32M2MEUH","created_at":"2026-07-05T02:49:12Z"},{"alias_kind":"pith_short_8","alias_value":"SSE4MCXJ","created_at":"2026-07-05T02:49:12Z"}],"graph_snapshots":[{"event_id":"sha256:394fa6bc76722b16acfcbd7f2068d10fb8fd84acb7b8e9a1938b4e36184d76ab","target":"graph","created_at":"2026-07-05T02:49:12Z","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/2010.04131/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In binary-black-hole systems where the black-hole spins are misaligned with the orbital angular momentum, precession effects leave characteristic modulations in the emitted gravitational waveform. Here, we investigate where in the parameter space we will be able to accurately identify precession, for likely observations over coming LIGO-Virgo-KAGRA observing runs. Despite the large number of parameters that characterise a precessing binary, we perform a large scale systematic study to identify the impact of each source parameter on the measurement of precession. We simulate a fiducial binary a","authors_text":"Charlie Hoy, Cory Thomas, Francesco Pannarale, Mark Hannam, Rhys Green, Stephen Fairhurst","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-10-08T17:18:05Z","title":"Identifying when Precession can be Measured in Gravitational Waveforms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.04131","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:ac4b604136181ef7555380ed2e42d6c97f25b52494cf972b497abbf6eb5cf3f7","target":"record","created_at":"2026-07-05T02:49:12Z","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":"a1c4ece990caaa1be632c43bebed653a371e4f4b6585b86feda3d16ffba6be23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-10-08T17:18:05Z","title_canon_sha256":"84f2df88982ffabe5107854dd928f722500f26880912d8da8d01f6f36a79c297"},"schema_version":"1.0","source":{"id":"2010.04131","kind":"arxiv","version":2}},"canonical_sha256":"9489c60ae9de99a6128743f9c4b65ef13f17fa425e617113cefd97f548a54c20","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9489c60ae9de99a6128743f9c4b65ef13f17fa425e617113cefd97f548a54c20","first_computed_at":"2026-07-05T02:49:12.998260Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:49:12.998260Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Eca6yJ4mDQe6DzbZZAdKgsBFX8xZ+mIJoilZ1/maXY/MALuCCKYihBifCz3XnGguc5QJhU8ylpkeTT7yvNUpAw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:49:12.998717Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.04131","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ac4b604136181ef7555380ed2e42d6c97f25b52494cf972b497abbf6eb5cf3f7","sha256:394fa6bc76722b16acfcbd7f2068d10fb8fd84acb7b8e9a1938b4e36184d76ab"],"state_sha256":"74094006a35eb91a462cff01626199b65176741e6629e1b844740befe3a77161"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aF//V/wZ4rD+r9NDdK26VsaI5y46ZWYlaxvUGotTx+gjMJb32Mloc6gcn4f9RDV2SLdMQwHulKqQwpMKb/JrCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-15T22:59:31.669610Z","bundle_sha256":"603aeacf6f3362e177f9dfb0196e0f894cdf7921a629567dfa9b9b3eeaa58137"}}