{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:7KSB7RFE2F4CFIJWUDO55RVEXP","short_pith_number":"pith:7KSB7RFE","canonical_record":{"source":{"id":"1606.04519","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-06-14T19:33:27Z","cross_cats_sorted":[],"title_canon_sha256":"4120c24cd5ffb83830210ec1bb23d510cadb6c6ff9fcd2568c6f04a5e33e2d5f","abstract_canon_sha256":"a8a2e694b2529e41e84210a0246bce60f5a249fe16bc592e0e6b4eaeb36a7e28"},"schema_version":"1.0"},"canonical_sha256":"faa41fc4a4d17822a136a0dddec6a4bbc816bf01507bbc1b15e8a66a38f29493","source":{"kind":"arxiv","id":"1606.04519","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.04519","created_at":"2026-05-18T00:51:01Z"},{"alias_kind":"arxiv_version","alias_value":"1606.04519v2","created_at":"2026-05-18T00:51:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.04519","created_at":"2026-05-18T00:51:01Z"},{"alias_kind":"pith_short_12","alias_value":"7KSB7RFE2F4C","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7KSB7RFE2F4CFIJW","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7KSB7RFE","created_at":"2026-05-18T12:30:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:7KSB7RFE2F4CFIJWUDO55RVEXP","target":"record","payload":{"canonical_record":{"source":{"id":"1606.04519","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-06-14T19:33:27Z","cross_cats_sorted":[],"title_canon_sha256":"4120c24cd5ffb83830210ec1bb23d510cadb6c6ff9fcd2568c6f04a5e33e2d5f","abstract_canon_sha256":"a8a2e694b2529e41e84210a0246bce60f5a249fe16bc592e0e6b4eaeb36a7e28"},"schema_version":"1.0"},"canonical_sha256":"faa41fc4a4d17822a136a0dddec6a4bbc816bf01507bbc1b15e8a66a38f29493","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:51:01.267087Z","signature_b64":"rdKvshhyjDrpq9VsaI5T+JbphDV8gUs9TvEGFjMmM0GX7CcE924kfHDnfYSkrCc6TrCBf8JilGiLOZVBgLNZDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"faa41fc4a4d17822a136a0dddec6a4bbc816bf01507bbc1b15e8a66a38f29493","last_reissued_at":"2026-05-18T00:51:01.266535Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:51:01.266535Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.04519","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":"2026-05-18T00:51:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8m8aB33TLjfqV1x5PDTfZMLsETQ5UP8QOLDWRg2qOXCFOjXeTn2fNq/ZZ+gHgEO66Og23l0/FXSU7hJ0RFBFBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T11:46:00.970657Z"},"content_sha256":"04ba6705fa2dc2451abfa58881fe1737827d73291d7a6ec2da200cbbf19ea5fb","schema_version":"1.0","event_id":"sha256:04ba6705fa2dc2451abfa58881fe1737827d73291d7a6ec2da200cbbf19ea5fb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:7KSB7RFE2F4CFIJWUDO55RVEXP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence for a postreproductive phase in female false killer whales Pseudorca crassidens","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"q-bio.PE","authors_text":"Helene Marsh, Ines M Ferreira, Peter B Best, Theoni Photopoulou, Toshio Kasuya","submitted_at":"2016-06-14T19:33:27Z","abstract_excerpt":"A substantial period of life after reproduction ends, known as postreproductive lifespan (PRLS), is at odds with classical life history theory. Prolonged PRLS has been confirmed in only two non-human mammals, both odontocete cetaceans. We investigate the evidence for PRLS in a third species, the false killer whale, Pseudorca crassidens, using a quantitative measure of PRLS and morphological evidence from reproductive tissue. We examined specimens from false killer whales from combined strandings (South Africa, 1981) and harvest (Japan 1979-80) and found morphological evidence of changes in the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.04519","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":""},"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":"2026-05-18T00:51:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QwKlQNvWXO0lN64z+osDJz+KBVMSJ5jOH5Llo/xVyjYPJZ3F1zRiSsi3CmEBZPle/fVcOuCL2Wwu4xzOKad6Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T11:46:00.970999Z"},"content_sha256":"c56f7d2ba8c0d0c43222d0ae79da371b0d5c322471945d292e58e92e7903285b","schema_version":"1.0","event_id":"sha256:c56f7d2ba8c0d0c43222d0ae79da371b0d5c322471945d292e58e92e7903285b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7KSB7RFE2F4CFIJWUDO55RVEXP/bundle.json","state_url":"https://pith.science/pith/7KSB7RFE2F4CFIJWUDO55RVEXP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7KSB7RFE2F4CFIJWUDO55RVEXP/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":"2026-06-05T11:46:00Z","links":{"resolver":"https://pith.science/pith/7KSB7RFE2F4CFIJWUDO55RVEXP","bundle":"https://pith.science/pith/7KSB7RFE2F4CFIJWUDO55RVEXP/bundle.json","state":"https://pith.science/pith/7KSB7RFE2F4CFIJWUDO55RVEXP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7KSB7RFE2F4CFIJWUDO55RVEXP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7KSB7RFE2F4CFIJWUDO55RVEXP","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":"a8a2e694b2529e41e84210a0246bce60f5a249fe16bc592e0e6b4eaeb36a7e28","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-06-14T19:33:27Z","title_canon_sha256":"4120c24cd5ffb83830210ec1bb23d510cadb6c6ff9fcd2568c6f04a5e33e2d5f"},"schema_version":"1.0","source":{"id":"1606.04519","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.04519","created_at":"2026-05-18T00:51:01Z"},{"alias_kind":"arxiv_version","alias_value":"1606.04519v2","created_at":"2026-05-18T00:51:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.04519","created_at":"2026-05-18T00:51:01Z"},{"alias_kind":"pith_short_12","alias_value":"7KSB7RFE2F4C","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7KSB7RFE2F4CFIJW","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7KSB7RFE","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:c56f7d2ba8c0d0c43222d0ae79da371b0d5c322471945d292e58e92e7903285b","target":"graph","created_at":"2026-05-18T00:51:01Z","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":"A substantial period of life after reproduction ends, known as postreproductive lifespan (PRLS), is at odds with classical life history theory. Prolonged PRLS has been confirmed in only two non-human mammals, both odontocete cetaceans. We investigate the evidence for PRLS in a third species, the false killer whale, Pseudorca crassidens, using a quantitative measure of PRLS and morphological evidence from reproductive tissue. We examined specimens from false killer whales from combined strandings (South Africa, 1981) and harvest (Japan 1979-80) and found morphological evidence of changes in the","authors_text":"Helene Marsh, Ines M Ferreira, Peter B Best, Theoni Photopoulou, Toshio Kasuya","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-06-14T19:33:27Z","title":"Evidence for a postreproductive phase in female false killer whales Pseudorca crassidens"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.04519","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":"sha256:04ba6705fa2dc2451abfa58881fe1737827d73291d7a6ec2da200cbbf19ea5fb","target":"record","created_at":"2026-05-18T00:51:01Z","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":"a8a2e694b2529e41e84210a0246bce60f5a249fe16bc592e0e6b4eaeb36a7e28","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-06-14T19:33:27Z","title_canon_sha256":"4120c24cd5ffb83830210ec1bb23d510cadb6c6ff9fcd2568c6f04a5e33e2d5f"},"schema_version":"1.0","source":{"id":"1606.04519","kind":"arxiv","version":2}},"canonical_sha256":"faa41fc4a4d17822a136a0dddec6a4bbc816bf01507bbc1b15e8a66a38f29493","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"faa41fc4a4d17822a136a0dddec6a4bbc816bf01507bbc1b15e8a66a38f29493","first_computed_at":"2026-05-18T00:51:01.266535Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:01.266535Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rdKvshhyjDrpq9VsaI5T+JbphDV8gUs9TvEGFjMmM0GX7CcE924kfHDnfYSkrCc6TrCBf8JilGiLOZVBgLNZDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:01.267087Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.04519","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04ba6705fa2dc2451abfa58881fe1737827d73291d7a6ec2da200cbbf19ea5fb","sha256:c56f7d2ba8c0d0c43222d0ae79da371b0d5c322471945d292e58e92e7903285b"],"state_sha256":"1b0eab13072b291154432c2bbf7513780d96e6818bd05ed5e8d571ac4c1bd934"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t+SIbIlbSHJqxP56e4KHLG4CswXLAT7G1eiIfDkrukzVmYGscE+S/EHHaMjEnIeC/+8qUNmHY13AJjPMR+UZAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T11:46:00.972967Z","bundle_sha256":"4eb422956e8231a313f273123bdc573358029fbfe6947b3300809a722bd848db"}}