{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:C3SJSA4O75F7DX3EIXADKVOWSQ","short_pith_number":"pith:C3SJSA4O","canonical_record":{"source":{"id":"1911.05882","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-11-14T01:10:57Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"a83c3ce2c7abb349e6f3f329fc1ca3ee40d2c625773fac739d6f368d56545469","abstract_canon_sha256":"568902311dce2c267162847f5a0c80d4ac67232832ac950d84c6fe3ba2fd9bb1"},"schema_version":"1.0"},"canonical_sha256":"16e499038eff4bf1df6445c03555d69428f0b134ca107463c8f0e967d11ccb20","source":{"kind":"arxiv","id":"1911.05882","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.05882","created_at":"2026-07-05T00:48:49Z"},{"alias_kind":"arxiv_version","alias_value":"1911.05882v1","created_at":"2026-07-05T00:48:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.05882","created_at":"2026-07-05T00:48:49Z"},{"alias_kind":"pith_short_12","alias_value":"C3SJSA4O75F7","created_at":"2026-07-05T00:48:49Z"},{"alias_kind":"pith_short_16","alias_value":"C3SJSA4O75F7DX3E","created_at":"2026-07-05T00:48:49Z"},{"alias_kind":"pith_short_8","alias_value":"C3SJSA4O","created_at":"2026-07-05T00:48:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:C3SJSA4O75F7DX3EIXADKVOWSQ","target":"record","payload":{"canonical_record":{"source":{"id":"1911.05882","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-11-14T01:10:57Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"a83c3ce2c7abb349e6f3f329fc1ca3ee40d2c625773fac739d6f368d56545469","abstract_canon_sha256":"568902311dce2c267162847f5a0c80d4ac67232832ac950d84c6fe3ba2fd9bb1"},"schema_version":"1.0"},"canonical_sha256":"16e499038eff4bf1df6445c03555d69428f0b134ca107463c8f0e967d11ccb20","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:48:49.424775Z","signature_b64":"ivYcZU+59IEK7fIZmrMEfebLUamoNIdab8RKtQZaVn8z4ZNyGFmPxI8OcqP6sOH3U2WDrTUXJ1LxTUtxOR/EAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16e499038eff4bf1df6445c03555d69428f0b134ca107463c8f0e967d11ccb20","last_reissued_at":"2026-07-05T00:48:49.424320Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:48:49.424320Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1911.05882","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":"2026-07-05T00:48:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hpOTkuNkSNu14KaihfBdOLq4L3zxVXURc2HV+DjovEMvQuq0nYDFe7b3werrooCtompgr5qeihK/9S8Bjur9DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:45:00.545229Z"},"content_sha256":"df8fe53fcfe62b70a40444ed2c8755ef7b113ae318a83034d4cf837dfb41314e","schema_version":"1.0","event_id":"sha256:df8fe53fcfe62b70a40444ed2c8755ef7b113ae318a83034d4cf837dfb41314e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:C3SJSA4O75F7DX3EIXADKVOWSQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Most Massive Binary Black Hole Detections and the Identification of Population Outliers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Daniel E. Holz, Maya Fishbach, Will M. Farr","submitted_at":"2019-11-14T01:10:57Z","abstract_excerpt":"Advanced LIGO and Virgo detected ten binary black holes (BBHs) in their first two observing runs (O1 and O2). Analysis of these events found strong evidence for a dearth of BBHs with component masses greater than $\\sim45 \\ M_\\odot$, as would be expected from a pair-instability mass gap. Meanwhile, a standalone analysis of the merger GW170729 found its primary mass $m_1 = {51.2^{+16.2}_{-11.0} \\ M_\\odot}$, with the majority of its posterior support at $m_1 > 45 \\ M_\\odot$. Although this appears to be in contradiction with the existence of a limit at $\\sim45\\ M_\\odot$, we argue that individual e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.05882","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/1911.05882/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":"2026-07-05T00:48:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hgVfDEg6t1NVFbINHAfAnsQ8uSCN7dYoZal0a9yTIEWufjkMm6aD3M3oGDGYJBWnu+6TRNLRGu1mOybLlCB0CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:45:00.545745Z"},"content_sha256":"4e4a97f07a71cae64e463f74b95c5e266666a21dfa4296d4165b58f9cbae14db","schema_version":"1.0","event_id":"sha256:4e4a97f07a71cae64e463f74b95c5e266666a21dfa4296d4165b58f9cbae14db"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C3SJSA4O75F7DX3EIXADKVOWSQ/bundle.json","state_url":"https://pith.science/pith/C3SJSA4O75F7DX3EIXADKVOWSQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C3SJSA4O75F7DX3EIXADKVOWSQ/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":"2026-08-03T18:45:00Z","links":{"resolver":"https://pith.science/pith/C3SJSA4O75F7DX3EIXADKVOWSQ","bundle":"https://pith.science/pith/C3SJSA4O75F7DX3EIXADKVOWSQ/bundle.json","state":"https://pith.science/pith/C3SJSA4O75F7DX3EIXADKVOWSQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C3SJSA4O75F7DX3EIXADKVOWSQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:C3SJSA4O75F7DX3EIXADKVOWSQ","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":"568902311dce2c267162847f5a0c80d4ac67232832ac950d84c6fe3ba2fd9bb1","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-11-14T01:10:57Z","title_canon_sha256":"a83c3ce2c7abb349e6f3f329fc1ca3ee40d2c625773fac739d6f368d56545469"},"schema_version":"1.0","source":{"id":"1911.05882","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.05882","created_at":"2026-07-05T00:48:49Z"},{"alias_kind":"arxiv_version","alias_value":"1911.05882v1","created_at":"2026-07-05T00:48:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.05882","created_at":"2026-07-05T00:48:49Z"},{"alias_kind":"pith_short_12","alias_value":"C3SJSA4O75F7","created_at":"2026-07-05T00:48:49Z"},{"alias_kind":"pith_short_16","alias_value":"C3SJSA4O75F7DX3E","created_at":"2026-07-05T00:48:49Z"},{"alias_kind":"pith_short_8","alias_value":"C3SJSA4O","created_at":"2026-07-05T00:48:49Z"}],"graph_snapshots":[{"event_id":"sha256:4e4a97f07a71cae64e463f74b95c5e266666a21dfa4296d4165b58f9cbae14db","target":"graph","created_at":"2026-07-05T00:48:49Z","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/1911.05882/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Advanced LIGO and Virgo detected ten binary black holes (BBHs) in their first two observing runs (O1 and O2). Analysis of these events found strong evidence for a dearth of BBHs with component masses greater than $\\sim45 \\ M_\\odot$, as would be expected from a pair-instability mass gap. Meanwhile, a standalone analysis of the merger GW170729 found its primary mass $m_1 = {51.2^{+16.2}_{-11.0} \\ M_\\odot}$, with the majority of its posterior support at $m_1 > 45 \\ M_\\odot$. Although this appears to be in contradiction with the existence of a limit at $\\sim45\\ M_\\odot$, we argue that individual e","authors_text":"Daniel E. Holz, Maya Fishbach, Will M. Farr","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-11-14T01:10:57Z","title":"The Most Massive Binary Black Hole Detections and the Identification of Population Outliers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.05882","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:df8fe53fcfe62b70a40444ed2c8755ef7b113ae318a83034d4cf837dfb41314e","target":"record","created_at":"2026-07-05T00:48:49Z","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":"568902311dce2c267162847f5a0c80d4ac67232832ac950d84c6fe3ba2fd9bb1","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-11-14T01:10:57Z","title_canon_sha256":"a83c3ce2c7abb349e6f3f329fc1ca3ee40d2c625773fac739d6f368d56545469"},"schema_version":"1.0","source":{"id":"1911.05882","kind":"arxiv","version":1}},"canonical_sha256":"16e499038eff4bf1df6445c03555d69428f0b134ca107463c8f0e967d11ccb20","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16e499038eff4bf1df6445c03555d69428f0b134ca107463c8f0e967d11ccb20","first_computed_at":"2026-07-05T00:48:49.424320Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:48:49.424320Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ivYcZU+59IEK7fIZmrMEfebLUamoNIdab8RKtQZaVn8z4ZNyGFmPxI8OcqP6sOH3U2WDrTUXJ1LxTUtxOR/EAA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:48:49.424775Z","signed_message":"canonical_sha256_bytes"},"source_id":"1911.05882","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:df8fe53fcfe62b70a40444ed2c8755ef7b113ae318a83034d4cf837dfb41314e","sha256:4e4a97f07a71cae64e463f74b95c5e266666a21dfa4296d4165b58f9cbae14db"],"state_sha256":"c9ad2d18326c5aee5a28ca2dcbf4c7979fa9455ade5d0414a1a0290c97385b3f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sV4NRIrIwwYDSFGghPzwSp/2XJMRFrjSbtjegB8TLjIMb+HV+7AIHF/2+luQyNbCYaEx8EMMHPKCFdePLRJICw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T18:45:00.549263Z","bundle_sha256":"f632bdde935ac01e525aadb7983eefffe1f45489cb4e85b453a5670f411fc510"}}