{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:L6BTUUZCD2FDBWUZF3WS5M7VNX","short_pith_number":"pith:L6BTUUZC","canonical_record":{"source":{"id":"astro-ph/9606098","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-06-17T10:22:44Z","cross_cats_sorted":[],"title_canon_sha256":"8f3680ed327a1f75d339f35e80847bc07d940210b4b12bb4791288c675b2cfb2","abstract_canon_sha256":"39bfb3235c090f1018857d12ca7d1b9cbcb04a9de8b423543ea97eb917ebe0f3"},"schema_version":"1.0"},"canonical_sha256":"5f833a53221e8a30da992eed2eb3f56dffd30e4eac8cddfd9a98febc801d8254","source":{"kind":"arxiv","id":"astro-ph/9606098","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9606098","created_at":"2026-07-04T17:25:34Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9606098v1","created_at":"2026-07-04T17:25:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9606098","created_at":"2026-07-04T17:25:34Z"},{"alias_kind":"pith_short_12","alias_value":"L6BTUUZCD2FD","created_at":"2026-07-04T17:25:34Z"},{"alias_kind":"pith_short_16","alias_value":"L6BTUUZCD2FDBWUZ","created_at":"2026-07-04T17:25:34Z"},{"alias_kind":"pith_short_8","alias_value":"L6BTUUZC","created_at":"2026-07-04T17:25:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:L6BTUUZCD2FDBWUZF3WS5M7VNX","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9606098","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-06-17T10:22:44Z","cross_cats_sorted":[],"title_canon_sha256":"8f3680ed327a1f75d339f35e80847bc07d940210b4b12bb4791288c675b2cfb2","abstract_canon_sha256":"39bfb3235c090f1018857d12ca7d1b9cbcb04a9de8b423543ea97eb917ebe0f3"},"schema_version":"1.0"},"canonical_sha256":"5f833a53221e8a30da992eed2eb3f56dffd30e4eac8cddfd9a98febc801d8254","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:25:34.306991Z","signature_b64":"4jgLgagnJ2+V84kyQ+o+tLl4c8rPJmEgbpaFKKkVTSuMQENaW3mj8kjaFMWIX6hxJjbAeHSUncqOoQmG0iLSCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5f833a53221e8a30da992eed2eb3f56dffd30e4eac8cddfd9a98febc801d8254","last_reissued_at":"2026-07-04T17:25:34.306651Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:25:34.306651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9606098","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":"2026-07-04T17:25:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zVan06z3K+SQt+PN7fbMBanTyvaldqFaiG1An7ECa5VCv+YgazwDzXTsd9kx0KnMelWAutrv+TlgZkhq1qaUCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T00:59:08.675311Z"},"content_sha256":"f8fad37c562ffa8940be3865e5fe645c87d03e601fb3093498bd2db32a57963a","schema_version":"1.0","event_id":"sha256:f8fad37c562ffa8940be3865e5fe645c87d03e601fb3093498bd2db32a57963a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:L6BTUUZCD2FDBWUZF3WS5M7VNX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Observational Distribution of Internal Velocity Dispersions in Nearby Galaxy Clusters","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Dario Fadda, Fabio Mardirossian, Giuliano Giuricin, Marino Mezzetti (Dipartimento di Astronomia, Marisa Girardi, Universita' di Trieste - Sissa - Italy)","submitted_at":"1996-06-17T10:22:44Z","abstract_excerpt":"We analyze the internal velocity dispersions of a sample of 172 nearby galaxy clusters (z < 0.15), each of which has at least 30 available galaxy redshifts, and spans a large richness range. Cluster membership selection is based on nonparametric methods. In the estimate of galaxy velocity dispersion we consider the effects of possible velocity anisotropies in galaxy orbits, the infall of late-type galaxies, and velocity gradients. The dynamical uncertainties due to the presence of substructures are also taken into account.\n  Our cumulative distribution agrees with previous distributions within"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9606098","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/astro-ph/9606098/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":"2026-07-04T17:25:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/MsYoTNWQ1+evtaDM+z5F5U2DqzrV0eUuSukbmUAS67b/XLtyZ31Ap3EVDvKWRvXKs5D5MQaPKU8rqw7CQMlCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T00:59:08.675801Z"},"content_sha256":"1b8abbefad7885a5eba4be1a7b9b1c5a6de44cd1378a9e58b38d3e30a8b7b2fa","schema_version":"1.0","event_id":"sha256:1b8abbefad7885a5eba4be1a7b9b1c5a6de44cd1378a9e58b38d3e30a8b7b2fa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L6BTUUZCD2FDBWUZF3WS5M7VNX/bundle.json","state_url":"https://pith.science/pith/L6BTUUZCD2FDBWUZF3WS5M7VNX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L6BTUUZCD2FDBWUZF3WS5M7VNX/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":"2026-08-04T00:59:08Z","links":{"resolver":"https://pith.science/pith/L6BTUUZCD2FDBWUZF3WS5M7VNX","bundle":"https://pith.science/pith/L6BTUUZCD2FDBWUZF3WS5M7VNX/bundle.json","state":"https://pith.science/pith/L6BTUUZCD2FDBWUZF3WS5M7VNX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L6BTUUZCD2FDBWUZF3WS5M7VNX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:L6BTUUZCD2FDBWUZF3WS5M7VNX","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":"39bfb3235c090f1018857d12ca7d1b9cbcb04a9de8b423543ea97eb917ebe0f3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-06-17T10:22:44Z","title_canon_sha256":"8f3680ed327a1f75d339f35e80847bc07d940210b4b12bb4791288c675b2cfb2"},"schema_version":"1.0","source":{"id":"astro-ph/9606098","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9606098","created_at":"2026-07-04T17:25:34Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9606098v1","created_at":"2026-07-04T17:25:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9606098","created_at":"2026-07-04T17:25:34Z"},{"alias_kind":"pith_short_12","alias_value":"L6BTUUZCD2FD","created_at":"2026-07-04T17:25:34Z"},{"alias_kind":"pith_short_16","alias_value":"L6BTUUZCD2FDBWUZ","created_at":"2026-07-04T17:25:34Z"},{"alias_kind":"pith_short_8","alias_value":"L6BTUUZC","created_at":"2026-07-04T17:25:34Z"}],"graph_snapshots":[{"event_id":"sha256:1b8abbefad7885a5eba4be1a7b9b1c5a6de44cd1378a9e58b38d3e30a8b7b2fa","target":"graph","created_at":"2026-07-04T17:25:34Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/9606098/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We analyze the internal velocity dispersions of a sample of 172 nearby galaxy clusters (z < 0.15), each of which has at least 30 available galaxy redshifts, and spans a large richness range. Cluster membership selection is based on nonparametric methods. In the estimate of galaxy velocity dispersion we consider the effects of possible velocity anisotropies in galaxy orbits, the infall of late-type galaxies, and velocity gradients. The dynamical uncertainties due to the presence of substructures are also taken into account.\n  Our cumulative distribution agrees with previous distributions within","authors_text":"Dario Fadda, Fabio Mardirossian, Giuliano Giuricin, Marino Mezzetti (Dipartimento di Astronomia, Marisa Girardi, Universita' di Trieste - Sissa - Italy)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1996-06-17T10:22:44Z","title":"The Observational Distribution of Internal Velocity Dispersions in Nearby Galaxy Clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9606098","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:f8fad37c562ffa8940be3865e5fe645c87d03e601fb3093498bd2db32a57963a","target":"record","created_at":"2026-07-04T17:25:34Z","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":"39bfb3235c090f1018857d12ca7d1b9cbcb04a9de8b423543ea97eb917ebe0f3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-06-17T10:22:44Z","title_canon_sha256":"8f3680ed327a1f75d339f35e80847bc07d940210b4b12bb4791288c675b2cfb2"},"schema_version":"1.0","source":{"id":"astro-ph/9606098","kind":"arxiv","version":1}},"canonical_sha256":"5f833a53221e8a30da992eed2eb3f56dffd30e4eac8cddfd9a98febc801d8254","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5f833a53221e8a30da992eed2eb3f56dffd30e4eac8cddfd9a98febc801d8254","first_computed_at":"2026-07-04T17:25:34.306651Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:25:34.306651Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4jgLgagnJ2+V84kyQ+o+tLl4c8rPJmEgbpaFKKkVTSuMQENaW3mj8kjaFMWIX6hxJjbAeHSUncqOoQmG0iLSCg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:25:34.306991Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9606098","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f8fad37c562ffa8940be3865e5fe645c87d03e601fb3093498bd2db32a57963a","sha256:1b8abbefad7885a5eba4be1a7b9b1c5a6de44cd1378a9e58b38d3e30a8b7b2fa"],"state_sha256":"4b6575c85b50065d9cd2a0af5330ed9b24aac5fb11c97bdeb1d85bc6ecea662b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XUv8TL+uDltsGxUeDoo2O/Fa4O4iQX1ue5Oej4yTLqO4il2cbqbKl1J9uObdsZWhDTWPJ876aW1ZSKWumUyZCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T00:59:08.679472Z","bundle_sha256":"bbad5be5dec566b9fe331618bcbe8ca2c4a85d7c65a62b81977789bbb6ff3686"}}