{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:5GBQAY23S4MZMH7DCYNOEUA4UD","short_pith_number":"pith:5GBQAY23","canonical_record":{"source":{"id":"astro-ph/9901263","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-01-20T08:14:49Z","cross_cats_sorted":[],"title_canon_sha256":"d6c93e093fdd998a7d919668d21cf75f595072f114329b3dd1d90df71cec6656","abstract_canon_sha256":"59609cc309e863c18cb8081e34dcba7b3a626e3f984dc460a0dfaaccca580a78"},"schema_version":"1.0"},"canonical_sha256":"e98300635b9719961fe3161ae2501ca0cb3f5796cc4a7e64f13d5aec89259c44","source":{"kind":"arxiv","id":"astro-ph/9901263","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9901263","created_at":"2026-07-04T15:51:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9901263v1","created_at":"2026-07-04T15:51:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9901263","created_at":"2026-07-04T15:51:14Z"},{"alias_kind":"pith_short_12","alias_value":"5GBQAY23S4MZ","created_at":"2026-07-04T15:51:14Z"},{"alias_kind":"pith_short_16","alias_value":"5GBQAY23S4MZMH7D","created_at":"2026-07-04T15:51:14Z"},{"alias_kind":"pith_short_8","alias_value":"5GBQAY23","created_at":"2026-07-04T15:51:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:5GBQAY23S4MZMH7DCYNOEUA4UD","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9901263","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1999-01-20T08:14:49Z","cross_cats_sorted":[],"title_canon_sha256":"d6c93e093fdd998a7d919668d21cf75f595072f114329b3dd1d90df71cec6656","abstract_canon_sha256":"59609cc309e863c18cb8081e34dcba7b3a626e3f984dc460a0dfaaccca580a78"},"schema_version":"1.0"},"canonical_sha256":"e98300635b9719961fe3161ae2501ca0cb3f5796cc4a7e64f13d5aec89259c44","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:51:14.535474Z","signature_b64":"5RP6lEnmxbtQylMDZoaGLR+1LWuWHY+hkPKbAEa1X0zwCWV3FzmIxXYqumpM22Ob413gaF1TxmaE18SVwmWoBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e98300635b9719961fe3161ae2501ca0cb3f5796cc4a7e64f13d5aec89259c44","last_reissued_at":"2026-07-04T15:51:14.534980Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:51:14.534980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9901263","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":"2026-07-04T15:51:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h7HxnGzCCXzrsgsPoxdd4ngA6uJ9k/oMisaFcKPSdafiCjb6rpwuLFgW33min7p4YnyVRBbMATib7PfpCcQvAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T00:55:26.737407Z"},"content_sha256":"e41b23b74f4168a0cdb7d14bbb9c533c55dbb8c16b96a6786c635f65d64fa11e","schema_version":"1.0","event_id":"sha256:e41b23b74f4168a0cdb7d14bbb9c533c55dbb8c16b96a6786c635f65d64fa11e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:5GBQAY23S4MZMH7DCYNOEUA4UD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Spectroscopic Catalog of 10 Distant Rich Clusters of Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alan Dressler, Bianca Poggianti, Harvey Butcher, Ian Smail, Richard Ellis & Augustus Oemler Jr, Warrick Couch","submitted_at":"1999-01-20T08:14:49Z","abstract_excerpt":"We present spectroscopic observations of galaxies in the fields of 10 distant clusters for which we have previously presented deep imaging with WFPC2 on board the HST. The clusters span the redshift range z=0.37-0.56 and are the subject of a detailed ground- and space-based study to investigate the evolution of galaxies as a function of environment and epoch. The data presented here include positions, photometry, redshifts, spectral line strengths and classifications for 657 galaxies in the fields of the 10 clusters. The catalog comprises 424 cluster members across the 10 clusters and 233 fiel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9901263","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/9901263/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":"2026-07-04T15:51:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5/dPf8uDvRKzmX4NxTIjTTc9F6UUhKXlUOCIC4+t4iYeeXuIABaVW1YgkRf5aBuXy8OcRlQWeWrg1f9OiF/4AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T00:55:26.737904Z"},"content_sha256":"e625e6023f2d66b5d2bc61b60cdacbf8778bcb8a13f5179add236175613a87e8","schema_version":"1.0","event_id":"sha256:e625e6023f2d66b5d2bc61b60cdacbf8778bcb8a13f5179add236175613a87e8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5GBQAY23S4MZMH7DCYNOEUA4UD/bundle.json","state_url":"https://pith.science/pith/5GBQAY23S4MZMH7DCYNOEUA4UD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5GBQAY23S4MZMH7DCYNOEUA4UD/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":"2026-08-10T00:55:26Z","links":{"resolver":"https://pith.science/pith/5GBQAY23S4MZMH7DCYNOEUA4UD","bundle":"https://pith.science/pith/5GBQAY23S4MZMH7DCYNOEUA4UD/bundle.json","state":"https://pith.science/pith/5GBQAY23S4MZMH7DCYNOEUA4UD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5GBQAY23S4MZMH7DCYNOEUA4UD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:5GBQAY23S4MZMH7DCYNOEUA4UD","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":"59609cc309e863c18cb8081e34dcba7b3a626e3f984dc460a0dfaaccca580a78","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-01-20T08:14:49Z","title_canon_sha256":"d6c93e093fdd998a7d919668d21cf75f595072f114329b3dd1d90df71cec6656"},"schema_version":"1.0","source":{"id":"astro-ph/9901263","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9901263","created_at":"2026-07-04T15:51:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9901263v1","created_at":"2026-07-04T15:51:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9901263","created_at":"2026-07-04T15:51:14Z"},{"alias_kind":"pith_short_12","alias_value":"5GBQAY23S4MZ","created_at":"2026-07-04T15:51:14Z"},{"alias_kind":"pith_short_16","alias_value":"5GBQAY23S4MZMH7D","created_at":"2026-07-04T15:51:14Z"},{"alias_kind":"pith_short_8","alias_value":"5GBQAY23","created_at":"2026-07-04T15:51:14Z"}],"graph_snapshots":[{"event_id":"sha256:e625e6023f2d66b5d2bc61b60cdacbf8778bcb8a13f5179add236175613a87e8","target":"graph","created_at":"2026-07-04T15:51:14Z","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/9901263/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present spectroscopic observations of galaxies in the fields of 10 distant clusters for which we have previously presented deep imaging with WFPC2 on board the HST. The clusters span the redshift range z=0.37-0.56 and are the subject of a detailed ground- and space-based study to investigate the evolution of galaxies as a function of environment and epoch. The data presented here include positions, photometry, redshifts, spectral line strengths and classifications for 657 galaxies in the fields of the 10 clusters. The catalog comprises 424 cluster members across the 10 clusters and 233 fiel","authors_text":"Alan Dressler, Bianca Poggianti, Harvey Butcher, Ian Smail, Richard Ellis & Augustus Oemler Jr, Warrick Couch","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1999-01-20T08:14:49Z","title":"A Spectroscopic Catalog of 10 Distant Rich Clusters of Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9901263","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:e41b23b74f4168a0cdb7d14bbb9c533c55dbb8c16b96a6786c635f65d64fa11e","target":"record","created_at":"2026-07-04T15:51:14Z","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":"59609cc309e863c18cb8081e34dcba7b3a626e3f984dc460a0dfaaccca580a78","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1999-01-20T08:14:49Z","title_canon_sha256":"d6c93e093fdd998a7d919668d21cf75f595072f114329b3dd1d90df71cec6656"},"schema_version":"1.0","source":{"id":"astro-ph/9901263","kind":"arxiv","version":1}},"canonical_sha256":"e98300635b9719961fe3161ae2501ca0cb3f5796cc4a7e64f13d5aec89259c44","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e98300635b9719961fe3161ae2501ca0cb3f5796cc4a7e64f13d5aec89259c44","first_computed_at":"2026-07-04T15:51:14.534980Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:51:14.534980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5RP6lEnmxbtQylMDZoaGLR+1LWuWHY+hkPKbAEa1X0zwCWV3FzmIxXYqumpM22Ob413gaF1TxmaE18SVwmWoBg==","signature_status":"signed_v1","signed_at":"2026-07-04T15:51:14.535474Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9901263","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e41b23b74f4168a0cdb7d14bbb9c533c55dbb8c16b96a6786c635f65d64fa11e","sha256:e625e6023f2d66b5d2bc61b60cdacbf8778bcb8a13f5179add236175613a87e8"],"state_sha256":"9eb5e45ab42362eea86e06e4d54292e73cd25845500728ddb766b60c0ce1e10b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XSAp1YK1TebsNueMeNdTljbEpmqFrrYlxiRzBUfB62Zbw368Mn7gK5m58a9MV40angDnQCu0szCmAL4WgB33CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T00:55:26.743168Z","bundle_sha256":"0bbac693a80f086891913a41a5a8b3e1874b4406e2665862cabeb006b125c2f9"}}