{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:7TEGVWZLVP2D7EADOJU7DJZCNF","short_pith_number":"pith:7TEGVWZL","canonical_record":{"source":{"id":"astro-ph/9602090","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-02-19T02:44:24Z","cross_cats_sorted":[],"title_canon_sha256":"ba92948ab633713b7cfec3d6c6a6c25e440cd82d34bd1d76fb31a9effbf121ee","abstract_canon_sha256":"2578c6832abe369e69539765e53e2aab04af94ee16e4b11e4d93f9c37d892a47"},"schema_version":"1.0"},"canonical_sha256":"fcc86adb2babf43f90037269f1a722694204aaefbebb3a1a635a8a78932ecf66","source":{"kind":"arxiv","id":"astro-ph/9602090","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9602090","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9602090v1","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9602090","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"pith_short_12","alias_value":"7TEGVWZLVP2D","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"7TEGVWZLVP2D7EAD","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"7TEGVWZL","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:7TEGVWZLVP2D7EADOJU7DJZCNF","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9602090","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-02-19T02:44:24Z","cross_cats_sorted":[],"title_canon_sha256":"ba92948ab633713b7cfec3d6c6a6c25e440cd82d34bd1d76fb31a9effbf121ee","abstract_canon_sha256":"2578c6832abe369e69539765e53e2aab04af94ee16e4b11e4d93f9c37d892a47"},"schema_version":"1.0"},"canonical_sha256":"fcc86adb2babf43f90037269f1a722694204aaefbebb3a1a635a8a78932ecf66","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:34.240175Z","signature_b64":"uuT1jqM9PImqEophv2uWOBe7AWetnrbiLd5Jhnj2GjI7eu2cMTtfbpFFcbBLY+5+F/RYvlhZq+9Shfapj95NCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fcc86adb2babf43f90037269f1a722694204aaefbebb3a1a635a8a78932ecf66","last_reissued_at":"2026-05-17T23:49:34.239548Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:34.239548Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9602090","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":"2026-05-17T23:49:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o4Uor4PFi0sOeYfLc5oVQdAh3cR7cMBognppQxy1FFixQrWJbdwyCisFK3fRHXd4E33JXixhEn0bz3l98XJJAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:30:05.327779Z"},"content_sha256":"47b42160df02c3f239f323609a6456b1ace8b0940d6c97337e300f292587ae01","schema_version":"1.0","event_id":"sha256:47b42160df02c3f239f323609a6456b1ace8b0940d6c97337e300f292587ae01"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:7TEGVWZLVP2D7EADOJU7DJZCNF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The search and investigation of the Large Groups of Quasars","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) New Mexico State University), Andrey V. Kravtsov (2), Boris V. Komberg (1), Moscow, Vladimir N. Lukash (1) ((1) Astro Space Center","submitted_at":"1996-02-19T02:44:24Z","abstract_excerpt":"Recently, it was suggested that large concentrations or groups of quasars may trace sites of enhanced matter density at medium and high redshifts analogous to how galaxy clusters trace them in nearby space. We have checked existing quasar data for the presence of such groups. Large Quasar Groups (LQGs) were identified using a well-known cluster analysis technique. Our final list consists of 12 groups, including one reported previously. Most of the quasars in these groups come from deep homogeneous surveys. We have found that: (i) the probability that the detected groups are random is rather sm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9602090","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":"2026-05-17T23:49:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eolMT/3i+LcnHmxCRQKTvttWIw/gd3DFJNiVHxjHUJUW/WE6wiARJ87bbzBVzVEtVunNTuKd9bW2Htt8RiafAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:30:05.328185Z"},"content_sha256":"53f3d5430f6caf652738abdb889c2003767033b232c6d624b0a9e1209c9f275d","schema_version":"1.0","event_id":"sha256:53f3d5430f6caf652738abdb889c2003767033b232c6d624b0a9e1209c9f275d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7TEGVWZLVP2D7EADOJU7DJZCNF/bundle.json","state_url":"https://pith.science/pith/7TEGVWZLVP2D7EADOJU7DJZCNF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7TEGVWZLVP2D7EADOJU7DJZCNF/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":"2026-05-27T15:30:05Z","links":{"resolver":"https://pith.science/pith/7TEGVWZLVP2D7EADOJU7DJZCNF","bundle":"https://pith.science/pith/7TEGVWZLVP2D7EADOJU7DJZCNF/bundle.json","state":"https://pith.science/pith/7TEGVWZLVP2D7EADOJU7DJZCNF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7TEGVWZLVP2D7EADOJU7DJZCNF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:7TEGVWZLVP2D7EADOJU7DJZCNF","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":"2578c6832abe369e69539765e53e2aab04af94ee16e4b11e4d93f9c37d892a47","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-02-19T02:44:24Z","title_canon_sha256":"ba92948ab633713b7cfec3d6c6a6c25e440cd82d34bd1d76fb31a9effbf121ee"},"schema_version":"1.0","source":{"id":"astro-ph/9602090","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9602090","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9602090v1","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9602090","created_at":"2026-05-17T23:49:34Z"},{"alias_kind":"pith_short_12","alias_value":"7TEGVWZLVP2D","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"7TEGVWZLVP2D7EAD","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"7TEGVWZL","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:53f3d5430f6caf652738abdb889c2003767033b232c6d624b0a9e1209c9f275d","target":"graph","created_at":"2026-05-17T23:49:34Z","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":"Recently, it was suggested that large concentrations or groups of quasars may trace sites of enhanced matter density at medium and high redshifts analogous to how galaxy clusters trace them in nearby space. We have checked existing quasar data for the presence of such groups. Large Quasar Groups (LQGs) were identified using a well-known cluster analysis technique. Our final list consists of 12 groups, including one reported previously. Most of the quasars in these groups come from deep homogeneous surveys. We have found that: (i) the probability that the detected groups are random is rather sm","authors_text":"(2) New Mexico State University), Andrey V. Kravtsov (2), Boris V. Komberg (1), Moscow, Vladimir N. Lukash (1) ((1) Astro Space Center","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1996-02-19T02:44:24Z","title":"The search and investigation of the Large Groups of Quasars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9602090","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":"sha256:47b42160df02c3f239f323609a6456b1ace8b0940d6c97337e300f292587ae01","target":"record","created_at":"2026-05-17T23:49:34Z","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":"2578c6832abe369e69539765e53e2aab04af94ee16e4b11e4d93f9c37d892a47","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-02-19T02:44:24Z","title_canon_sha256":"ba92948ab633713b7cfec3d6c6a6c25e440cd82d34bd1d76fb31a9effbf121ee"},"schema_version":"1.0","source":{"id":"astro-ph/9602090","kind":"arxiv","version":1}},"canonical_sha256":"fcc86adb2babf43f90037269f1a722694204aaefbebb3a1a635a8a78932ecf66","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fcc86adb2babf43f90037269f1a722694204aaefbebb3a1a635a8a78932ecf66","first_computed_at":"2026-05-17T23:49:34.239548Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:34.239548Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uuT1jqM9PImqEophv2uWOBe7AWetnrbiLd5Jhnj2GjI7eu2cMTtfbpFFcbBLY+5+F/RYvlhZq+9Shfapj95NCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:34.240175Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9602090","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:47b42160df02c3f239f323609a6456b1ace8b0940d6c97337e300f292587ae01","sha256:53f3d5430f6caf652738abdb889c2003767033b232c6d624b0a9e1209c9f275d"],"state_sha256":"2e5f83f8c9064f7daaf7d11545a9cbb96f45647e86024bb3e616c3ef4e69aec0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eK9HgXk3duLaVGsQfDJj4AISOOek81+ZeNQla8/BwwK1lBxaA+cJlP22FvmRhaEewq1CQEaOwSjbPEfiTKknDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T15:30:05.331255Z","bundle_sha256":"c4b19659d9a812cd04f40011f31034b2692621b5d8ab3aaa268ae4397ff29614"}}