{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:ZXCOHY36G7AVIXYO6ANDHSKPYO","short_pith_number":"pith:ZXCOHY36","canonical_record":{"source":{"id":"2111.03669","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-11-05T18:00:02Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"c2cc8d6ddc8b8b38bdf62ee5b0e507d91d84186327f9f8c92b8e255663e90960","abstract_canon_sha256":"646c6bcb2126eec4b13414b3d0ef2139dac00d9338d6a4391f009166790647aa"},"schema_version":"1.0"},"canonical_sha256":"cdc4e3e37e37c1545f0ef01a33c94fc3906012b2e332bc4b9368af6ea8a2a279","source":{"kind":"arxiv","id":"2111.03669","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.03669","created_at":"2026-07-05T04:03:55Z"},{"alias_kind":"arxiv_version","alias_value":"2111.03669v2","created_at":"2026-07-05T04:03:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.03669","created_at":"2026-07-05T04:03:55Z"},{"alias_kind":"pith_short_12","alias_value":"ZXCOHY36G7AV","created_at":"2026-07-05T04:03:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZXCOHY36G7AVIXYO","created_at":"2026-07-05T04:03:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZXCOHY36","created_at":"2026-07-05T04:03:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:ZXCOHY36G7AVIXYO6ANDHSKPYO","target":"record","payload":{"canonical_record":{"source":{"id":"2111.03669","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-11-05T18:00:02Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"c2cc8d6ddc8b8b38bdf62ee5b0e507d91d84186327f9f8c92b8e255663e90960","abstract_canon_sha256":"646c6bcb2126eec4b13414b3d0ef2139dac00d9338d6a4391f009166790647aa"},"schema_version":"1.0"},"canonical_sha256":"cdc4e3e37e37c1545f0ef01a33c94fc3906012b2e332bc4b9368af6ea8a2a279","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:03:55.765536Z","signature_b64":"9Aqg37JmHqfdUtcFwR/jQRyPHPcBS/H7fq34Vvq7GEPV0LXJqSf2Vo4ahSX1gQbJ+KLmwho2jkO9rsQLwWarDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cdc4e3e37e37c1545f0ef01a33c94fc3906012b2e332bc4b9368af6ea8a2a279","last_reissued_at":"2026-07-05T04:03:55.765043Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:03:55.765043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.03669","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":"2026-07-05T04:03:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4AJIDqq26pgTVF471PZdNnggFjne3t3POXUaomR1Ql9NdIvqDUjcmRybs0fPjZ8duWZSNA98YEs224wTRBDWDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:08:42.586124Z"},"content_sha256":"2a930957595bbe3e4abd51ec8edd4a65bdb79da59c0dca309bdd72aff3bfe09c","schema_version":"1.0","event_id":"sha256:2a930957595bbe3e4abd51ec8edd4a65bdb79da59c0dca309bdd72aff3bfe09c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:ZXCOHY36G7AVIXYO6ANDHSKPYO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exploring Gravitationally-Lensed $z\\gtrsim6$ X-ray AGN Behind the RELICS clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Akos Bogdan, Christine Jones, Dan Coe, Marusa Bradac, Orsolya E. Kovacs, Ralph P. Kraft, Victoria Strait, William R. Forman","submitted_at":"2021-11-05T18:00:02Z","abstract_excerpt":"Although observations of high-redshift quasars demonstrate that many supermassive black holes (BHs) reached large masses within one billion years after the Big Bang, the origin of the first BHs is still a mystery. A promising way to constrain the origin of the first BHs is to explore the average properties of $z\\gtrsim6$ BHs. However, typical BHs remain hidden from X-ray surveys, which is due to their relatively faint nature and the limited sensitivity of X-ray telescopes. Gravitational lensing provides an attractive way to study this unique galaxy population as it magnifies the faint light fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.03669","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/2111.03669/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":"2026-07-05T04:03:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/SAPE0SEMOzqsLoLfLguDkWvd2TXfNK2k+hPbxmCzT22sG6w8ouRLZV1x7wBU8bMqAg8yPZ/cRC37odyuqyEDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:08:42.586631Z"},"content_sha256":"e01df2e3f8b2f418308f2e8833c62c229251eb1059aabbc025eafbaa55105536","schema_version":"1.0","event_id":"sha256:e01df2e3f8b2f418308f2e8833c62c229251eb1059aabbc025eafbaa55105536"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZXCOHY36G7AVIXYO6ANDHSKPYO/bundle.json","state_url":"https://pith.science/pith/ZXCOHY36G7AVIXYO6ANDHSKPYO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZXCOHY36G7AVIXYO6ANDHSKPYO/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":"2026-08-05T07:08:42Z","links":{"resolver":"https://pith.science/pith/ZXCOHY36G7AVIXYO6ANDHSKPYO","bundle":"https://pith.science/pith/ZXCOHY36G7AVIXYO6ANDHSKPYO/bundle.json","state":"https://pith.science/pith/ZXCOHY36G7AVIXYO6ANDHSKPYO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZXCOHY36G7AVIXYO6ANDHSKPYO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:ZXCOHY36G7AVIXYO6ANDHSKPYO","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":"646c6bcb2126eec4b13414b3d0ef2139dac00d9338d6a4391f009166790647aa","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-11-05T18:00:02Z","title_canon_sha256":"c2cc8d6ddc8b8b38bdf62ee5b0e507d91d84186327f9f8c92b8e255663e90960"},"schema_version":"1.0","source":{"id":"2111.03669","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.03669","created_at":"2026-07-05T04:03:55Z"},{"alias_kind":"arxiv_version","alias_value":"2111.03669v2","created_at":"2026-07-05T04:03:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.03669","created_at":"2026-07-05T04:03:55Z"},{"alias_kind":"pith_short_12","alias_value":"ZXCOHY36G7AV","created_at":"2026-07-05T04:03:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZXCOHY36G7AVIXYO","created_at":"2026-07-05T04:03:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZXCOHY36","created_at":"2026-07-05T04:03:55Z"}],"graph_snapshots":[{"event_id":"sha256:e01df2e3f8b2f418308f2e8833c62c229251eb1059aabbc025eafbaa55105536","target":"graph","created_at":"2026-07-05T04:03:55Z","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/2111.03669/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Although observations of high-redshift quasars demonstrate that many supermassive black holes (BHs) reached large masses within one billion years after the Big Bang, the origin of the first BHs is still a mystery. A promising way to constrain the origin of the first BHs is to explore the average properties of $z\\gtrsim6$ BHs. However, typical BHs remain hidden from X-ray surveys, which is due to their relatively faint nature and the limited sensitivity of X-ray telescopes. Gravitational lensing provides an attractive way to study this unique galaxy population as it magnifies the faint light fr","authors_text":"Akos Bogdan, Christine Jones, Dan Coe, Marusa Bradac, Orsolya E. Kovacs, Ralph P. Kraft, Victoria Strait, William R. Forman","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-11-05T18:00:02Z","title":"Exploring Gravitationally-Lensed $z\\gtrsim6$ X-ray AGN Behind the RELICS clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.03669","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":"sha256:2a930957595bbe3e4abd51ec8edd4a65bdb79da59c0dca309bdd72aff3bfe09c","target":"record","created_at":"2026-07-05T04:03:55Z","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":"646c6bcb2126eec4b13414b3d0ef2139dac00d9338d6a4391f009166790647aa","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-11-05T18:00:02Z","title_canon_sha256":"c2cc8d6ddc8b8b38bdf62ee5b0e507d91d84186327f9f8c92b8e255663e90960"},"schema_version":"1.0","source":{"id":"2111.03669","kind":"arxiv","version":2}},"canonical_sha256":"cdc4e3e37e37c1545f0ef01a33c94fc3906012b2e332bc4b9368af6ea8a2a279","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cdc4e3e37e37c1545f0ef01a33c94fc3906012b2e332bc4b9368af6ea8a2a279","first_computed_at":"2026-07-05T04:03:55.765043Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:03:55.765043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Aqg37JmHqfdUtcFwR/jQRyPHPcBS/H7fq34Vvq7GEPV0LXJqSf2Vo4ahSX1gQbJ+KLmwho2jkO9rsQLwWarDA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:03:55.765536Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.03669","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2a930957595bbe3e4abd51ec8edd4a65bdb79da59c0dca309bdd72aff3bfe09c","sha256:e01df2e3f8b2f418308f2e8833c62c229251eb1059aabbc025eafbaa55105536"],"state_sha256":"60d6a9cc647036dd855bf32f8f9cb31d27a0d83316502f1d7053361fd4da39c5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"85Mt9eJzolgqZsT6DEK8kQDNPpD1uQyJ/+WLwq+0nO1i/xztwL/ws+4EpzAGlPhz03ZkElWElvnF06MSZXvYBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T07:08:42.590852Z","bundle_sha256":"03c57765436b4506086773254e6578ad7152b1f90a5b2c4736bd1469cd7eceef"}}