{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:DGALQEGS36DN73A2OOYZ3Y5YPU","short_pith_number":"pith:DGALQEGS","canonical_record":{"source":{"id":"2002.12820","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-28T15:47:50Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"fc6aca128a341cd5f73108bc5243d9b04bae468c09d874e78b322712a2cc20d2","abstract_canon_sha256":"4650d80d731e8f2e9ea5802d4bb9f1d6adc7600d7b366c17cc7cc7cfdb4a95dd"},"schema_version":"1.0"},"canonical_sha256":"1980b810d2df86dfec1a73b19de3b87d30f3c162bdf4c652b42b59f2dda9b564","source":{"kind":"arxiv","id":"2002.12820","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.12820","created_at":"2026-07-05T00:50:16Z"},{"alias_kind":"arxiv_version","alias_value":"2002.12820v1","created_at":"2026-07-05T00:50:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.12820","created_at":"2026-07-05T00:50:16Z"},{"alias_kind":"pith_short_12","alias_value":"DGALQEGS36DN","created_at":"2026-07-05T00:50:16Z"},{"alias_kind":"pith_short_16","alias_value":"DGALQEGS36DN73A2","created_at":"2026-07-05T00:50:16Z"},{"alias_kind":"pith_short_8","alias_value":"DGALQEGS","created_at":"2026-07-05T00:50:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:DGALQEGS36DN73A2OOYZ3Y5YPU","target":"record","payload":{"canonical_record":{"source":{"id":"2002.12820","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-28T15:47:50Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"fc6aca128a341cd5f73108bc5243d9b04bae468c09d874e78b322712a2cc20d2","abstract_canon_sha256":"4650d80d731e8f2e9ea5802d4bb9f1d6adc7600d7b366c17cc7cc7cfdb4a95dd"},"schema_version":"1.0"},"canonical_sha256":"1980b810d2df86dfec1a73b19de3b87d30f3c162bdf4c652b42b59f2dda9b564","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:50:16.080061Z","signature_b64":"6ftuh+EHxqCOZys2JbsKmDi1FX7JEO6Klx+v+62BYI14z/xkaprUV4hpwIb+EMoSzwHdd5n57jO5qog6jM99BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1980b810d2df86dfec1a73b19de3b87d30f3c162bdf4c652b42b59f2dda9b564","last_reissued_at":"2026-07-05T00:50:16.079582Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:50:16.079582Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.12820","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":"2026-07-05T00:50:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4FZesKUvM9VEn+dTSJGo3oflXfTSS+HHEy2i1Bd9cxyOLdQsLp/QRig/lpe1KHk2obJrdqv4QNjGtryFo6dEBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T02:20:58.768884Z"},"content_sha256":"be8bb4f0aadfd573ffb49681abb885fff9cd01741df6314127a978ab138e4229","schema_version":"1.0","event_id":"sha256:be8bb4f0aadfd573ffb49681abb885fff9cd01741df6314127a978ab138e4229"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:DGALQEGS36DN73A2OOYZ3Y5YPU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On structure and kinematics of the Virgo cluster of galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Igor D. Karachentsev, Olga G. Kashibadze, Valentina E. Karachentseva","submitted_at":"2020-02-28T15:47:50Z","abstract_excerpt":"Aims. This work considers the Virgo cluster of galaxies, focusing on its structure, kinematics, and morphological landscape. Our principal aim is to estimate the virial mass of the cluster. For this purpose, we present a sample of 1537 galaxies with radial velocities $V_{LG} < 2600$~km~s$^{-1}$ situated within a region of $\\Delta{}SGL = 30^\\circ$ and $\\Delta{}SGB = 20^\\circ$ around M87. About half of the galaxies have distance estimates.\n  Methods. We selected 398 galaxies with distances in a $(17\\pm5)$~Mpc range. Based on their 1D and 2D number-density profiles and their radial velocity dispe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.12820","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/2002.12820/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":"2026-07-05T00:50:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kldmY5jG29qet+1tWNcm4A7AjrOfyqAbSOacxAZkfHnQrmBQLOnrmlrT8hamXxZEfDGy2vm8p4SC7yi7GToeDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T02:20:58.769377Z"},"content_sha256":"d33686da7545042f0daadf0a11930ebbe0f73f08f37ae76b923d64547509f903","schema_version":"1.0","event_id":"sha256:d33686da7545042f0daadf0a11930ebbe0f73f08f37ae76b923d64547509f903"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DGALQEGS36DN73A2OOYZ3Y5YPU/bundle.json","state_url":"https://pith.science/pith/DGALQEGS36DN73A2OOYZ3Y5YPU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DGALQEGS36DN73A2OOYZ3Y5YPU/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":"2026-08-04T02:20:58Z","links":{"resolver":"https://pith.science/pith/DGALQEGS36DN73A2OOYZ3Y5YPU","bundle":"https://pith.science/pith/DGALQEGS36DN73A2OOYZ3Y5YPU/bundle.json","state":"https://pith.science/pith/DGALQEGS36DN73A2OOYZ3Y5YPU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DGALQEGS36DN73A2OOYZ3Y5YPU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:DGALQEGS36DN73A2OOYZ3Y5YPU","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":"4650d80d731e8f2e9ea5802d4bb9f1d6adc7600d7b366c17cc7cc7cfdb4a95dd","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-28T15:47:50Z","title_canon_sha256":"fc6aca128a341cd5f73108bc5243d9b04bae468c09d874e78b322712a2cc20d2"},"schema_version":"1.0","source":{"id":"2002.12820","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.12820","created_at":"2026-07-05T00:50:16Z"},{"alias_kind":"arxiv_version","alias_value":"2002.12820v1","created_at":"2026-07-05T00:50:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.12820","created_at":"2026-07-05T00:50:16Z"},{"alias_kind":"pith_short_12","alias_value":"DGALQEGS36DN","created_at":"2026-07-05T00:50:16Z"},{"alias_kind":"pith_short_16","alias_value":"DGALQEGS36DN73A2","created_at":"2026-07-05T00:50:16Z"},{"alias_kind":"pith_short_8","alias_value":"DGALQEGS","created_at":"2026-07-05T00:50:16Z"}],"graph_snapshots":[{"event_id":"sha256:d33686da7545042f0daadf0a11930ebbe0f73f08f37ae76b923d64547509f903","target":"graph","created_at":"2026-07-05T00:50:16Z","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/2002.12820/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Aims. This work considers the Virgo cluster of galaxies, focusing on its structure, kinematics, and morphological landscape. Our principal aim is to estimate the virial mass of the cluster. For this purpose, we present a sample of 1537 galaxies with radial velocities $V_{LG} < 2600$~km~s$^{-1}$ situated within a region of $\\Delta{}SGL = 30^\\circ$ and $\\Delta{}SGB = 20^\\circ$ around M87. About half of the galaxies have distance estimates.\n  Methods. We selected 398 galaxies with distances in a $(17\\pm5)$~Mpc range. Based on their 1D and 2D number-density profiles and their radial velocity dispe","authors_text":"Igor D. Karachentsev, Olga G. Kashibadze, Valentina E. Karachentseva","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-28T15:47:50Z","title":"On structure and kinematics of the Virgo cluster of galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.12820","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:be8bb4f0aadfd573ffb49681abb885fff9cd01741df6314127a978ab138e4229","target":"record","created_at":"2026-07-05T00:50:16Z","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":"4650d80d731e8f2e9ea5802d4bb9f1d6adc7600d7b366c17cc7cc7cfdb4a95dd","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-02-28T15:47:50Z","title_canon_sha256":"fc6aca128a341cd5f73108bc5243d9b04bae468c09d874e78b322712a2cc20d2"},"schema_version":"1.0","source":{"id":"2002.12820","kind":"arxiv","version":1}},"canonical_sha256":"1980b810d2df86dfec1a73b19de3b87d30f3c162bdf4c652b42b59f2dda9b564","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1980b810d2df86dfec1a73b19de3b87d30f3c162bdf4c652b42b59f2dda9b564","first_computed_at":"2026-07-05T00:50:16.079582Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:50:16.079582Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6ftuh+EHxqCOZys2JbsKmDi1FX7JEO6Klx+v+62BYI14z/xkaprUV4hpwIb+EMoSzwHdd5n57jO5qog6jM99BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:50:16.080061Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.12820","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be8bb4f0aadfd573ffb49681abb885fff9cd01741df6314127a978ab138e4229","sha256:d33686da7545042f0daadf0a11930ebbe0f73f08f37ae76b923d64547509f903"],"state_sha256":"46dc296babc3988df831a32f0a68ebc84e77e556cc1a9275eb69202b69e8e64f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f6AVI+RqvKTKV8bk6LgI2O5X3NUy0m1tgH2/FhqzV7dbLj1m7zUZ4CKKhzFt55ntlVQCIVujE2G5ldmd9TWHAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T02:20:58.773522Z","bundle_sha256":"ef7ca37d7d407bc54c898ffc9d0f52e6e60cfd7cba1936c5b524771d3b8e2779"}}