{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:IJK6T6VHSZD2G3E4PNIOMVMYCS","short_pith_number":"pith:IJK6T6VH","canonical_record":{"source":{"id":"1809.00724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-03T21:33:25Z","cross_cats_sorted":[],"title_canon_sha256":"fbca711293dcf187f94bb94ba278a620bbe9aaa02e562ac9b33a5ed4642b9a86","abstract_canon_sha256":"9bb17f4fb4842ecef3ceb2ecc05f8a6bee1727950e8d042488e6adb8e367186e"},"schema_version":"1.0"},"canonical_sha256":"4255e9faa79647a36c9c7b50e6559814a311c788c3294b31850c12d458511008","source":{"kind":"arxiv","id":"1809.00724","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.00724","created_at":"2026-05-17T23:55:11Z"},{"alias_kind":"arxiv_version","alias_value":"1809.00724v1","created_at":"2026-05-17T23:55:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.00724","created_at":"2026-05-17T23:55:11Z"},{"alias_kind":"pith_short_12","alias_value":"IJK6T6VHSZD2","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"IJK6T6VHSZD2G3E4","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"IJK6T6VH","created_at":"2026-05-18T12:32:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:IJK6T6VHSZD2G3E4PNIOMVMYCS","target":"record","payload":{"canonical_record":{"source":{"id":"1809.00724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-03T21:33:25Z","cross_cats_sorted":[],"title_canon_sha256":"fbca711293dcf187f94bb94ba278a620bbe9aaa02e562ac9b33a5ed4642b9a86","abstract_canon_sha256":"9bb17f4fb4842ecef3ceb2ecc05f8a6bee1727950e8d042488e6adb8e367186e"},"schema_version":"1.0"},"canonical_sha256":"4255e9faa79647a36c9c7b50e6559814a311c788c3294b31850c12d458511008","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:55:11.899056Z","signature_b64":"cDr1UAYIXRyeFy0FG0m8G8sKZxY+H+sfQyhGvVQlZOHWERPZ1FD7r5BPaYV1RsGBeHFS3OgIgYbkQSFBpwyZBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4255e9faa79647a36c9c7b50e6559814a311c788c3294b31850c12d458511008","last_reissued_at":"2026-05-17T23:55:11.898653Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:55:11.898653Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.00724","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":"2026-05-17T23:55:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q4yDwkBAto+XQxUfMCTFydqyS2pZHjZ1WX/RrfuLyVx7i5p9clvuZcJ115PEqS1LKYsifM+3yf4s/uw3X+AVBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T01:57:16.154677Z"},"content_sha256":"b164beabc2167fc47eb64b4550e2efe1c5fd3ea030445c0e5c8acd1dd81cf7ee","schema_version":"1.0","event_id":"sha256:b164beabc2167fc47eb64b4550e2efe1c5fd3ea030445c0e5c8acd1dd81cf7ee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:IJK6T6VHSZD2G3E4PNIOMVMYCS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The redshift distribution of BL Lacs and FSRQs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Alexa Zack, Andrew M. Jones, Brandt Webster, Chandra B. Singh, Damian J. Christian, David Garofalo, Dylan T. Walsh, Matthew I. Kim","submitted_at":"2018-09-03T21:33:25Z","abstract_excerpt":"Flat spectrum radio quasars (FSRQs) and BL Lacs are powerful jet producing active galactic nuclei associated with supermassive black holes accreting at high and low Eddington rates, respectively. Based on the Millennium Simulation, Gardner and Done (2014; 2018) have predicted their redshift distribution by appealing to ideas from the spin paradigm in a way that exposes a need for a deeper discussion on three interrelated issues: (1) an overprediction of BL Lacs compared to flat spectrum radio quasars; (2) a difference in FSRQ and BL Lac distributions; (3) a need for powerful but different jets"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.00724","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":""},"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":"2026-05-17T23:55:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OjoLbKEjI0JcxZpDl0gkQjbcTLsZkFJ/sMikk8AvTcM1MOPIib+8c1JKtxnDarj/BXMPlC6lm8o1iG5SsHe7DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T01:57:16.155045Z"},"content_sha256":"2c182e38bb5ac2b1b37830055c8b10529093d996b41b9f24454f36a0f20317c7","schema_version":"1.0","event_id":"sha256:2c182e38bb5ac2b1b37830055c8b10529093d996b41b9f24454f36a0f20317c7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IJK6T6VHSZD2G3E4PNIOMVMYCS/bundle.json","state_url":"https://pith.science/pith/IJK6T6VHSZD2G3E4PNIOMVMYCS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IJK6T6VHSZD2G3E4PNIOMVMYCS/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":"2026-06-07T01:57:16Z","links":{"resolver":"https://pith.science/pith/IJK6T6VHSZD2G3E4PNIOMVMYCS","bundle":"https://pith.science/pith/IJK6T6VHSZD2G3E4PNIOMVMYCS/bundle.json","state":"https://pith.science/pith/IJK6T6VHSZD2G3E4PNIOMVMYCS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IJK6T6VHSZD2G3E4PNIOMVMYCS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:IJK6T6VHSZD2G3E4PNIOMVMYCS","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":"9bb17f4fb4842ecef3ceb2ecc05f8a6bee1727950e8d042488e6adb8e367186e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-03T21:33:25Z","title_canon_sha256":"fbca711293dcf187f94bb94ba278a620bbe9aaa02e562ac9b33a5ed4642b9a86"},"schema_version":"1.0","source":{"id":"1809.00724","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.00724","created_at":"2026-05-17T23:55:11Z"},{"alias_kind":"arxiv_version","alias_value":"1809.00724v1","created_at":"2026-05-17T23:55:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.00724","created_at":"2026-05-17T23:55:11Z"},{"alias_kind":"pith_short_12","alias_value":"IJK6T6VHSZD2","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"IJK6T6VHSZD2G3E4","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"IJK6T6VH","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:2c182e38bb5ac2b1b37830055c8b10529093d996b41b9f24454f36a0f20317c7","target":"graph","created_at":"2026-05-17T23:55:11Z","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":"Flat spectrum radio quasars (FSRQs) and BL Lacs are powerful jet producing active galactic nuclei associated with supermassive black holes accreting at high and low Eddington rates, respectively. Based on the Millennium Simulation, Gardner and Done (2014; 2018) have predicted their redshift distribution by appealing to ideas from the spin paradigm in a way that exposes a need for a deeper discussion on three interrelated issues: (1) an overprediction of BL Lacs compared to flat spectrum radio quasars; (2) a difference in FSRQ and BL Lac distributions; (3) a need for powerful but different jets","authors_text":"Alexa Zack, Andrew M. Jones, Brandt Webster, Chandra B. Singh, Damian J. Christian, David Garofalo, Dylan T. Walsh, Matthew I. Kim","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-03T21:33:25Z","title":"The redshift distribution of BL Lacs and FSRQs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.00724","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:b164beabc2167fc47eb64b4550e2efe1c5fd3ea030445c0e5c8acd1dd81cf7ee","target":"record","created_at":"2026-05-17T23:55:11Z","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":"9bb17f4fb4842ecef3ceb2ecc05f8a6bee1727950e8d042488e6adb8e367186e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-03T21:33:25Z","title_canon_sha256":"fbca711293dcf187f94bb94ba278a620bbe9aaa02e562ac9b33a5ed4642b9a86"},"schema_version":"1.0","source":{"id":"1809.00724","kind":"arxiv","version":1}},"canonical_sha256":"4255e9faa79647a36c9c7b50e6559814a311c788c3294b31850c12d458511008","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4255e9faa79647a36c9c7b50e6559814a311c788c3294b31850c12d458511008","first_computed_at":"2026-05-17T23:55:11.898653Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:11.898653Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cDr1UAYIXRyeFy0FG0m8G8sKZxY+H+sfQyhGvVQlZOHWERPZ1FD7r5BPaYV1RsGBeHFS3OgIgYbkQSFBpwyZBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:11.899056Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.00724","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b164beabc2167fc47eb64b4550e2efe1c5fd3ea030445c0e5c8acd1dd81cf7ee","sha256:2c182e38bb5ac2b1b37830055c8b10529093d996b41b9f24454f36a0f20317c7"],"state_sha256":"2947af6d284d4d45aee6ebd32dc5c411720b3230832e18975a5e527b0b7c9bbe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nWIaidQ/7o0L/zgSZk048EaMjiZy9Jz3TTaMJy0IcV6Gqb+K079xjNcTHYHpZuSOMAoJQzscC2esrqJHRsXXDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T01:57:16.156918Z","bundle_sha256":"b764dd089c25cd4df25267c9033ea1c8ca9ea1fb8a098c9829ba9d0755cad62a"}}