{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1995:DGXRBGRBCFIDVMY7AVVOWV4YZP","short_pith_number":"pith:DGXRBGRB","canonical_record":{"source":{"id":"astro-ph/9512033","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-12-07T01:28:41Z","cross_cats_sorted":[],"title_canon_sha256":"aeab9fd4844bb8c4e8539cd2ef76119f23b9fb92ab8ef96a5a856bfb817a4d9f","abstract_canon_sha256":"485cb5463e2b590d9073ed55d6a675b7df229b023f63393bf1bc2c6071798cea"},"schema_version":"1.0"},"canonical_sha256":"19af109a2111503ab31f056aeb5798cbd57388084c6e6021d864d3bb317d9010","source":{"kind":"arxiv","id":"astro-ph/9512033","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9512033","created_at":"2026-05-18T01:07:41Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9512033v1","created_at":"2026-05-18T01:07:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9512033","created_at":"2026-05-18T01:07:41Z"},{"alias_kind":"pith_short_12","alias_value":"DGXRBGRBCFID","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"DGXRBGRBCFIDVMY7","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"DGXRBGRB","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1995:DGXRBGRBCFIDVMY7AVVOWV4YZP","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9512033","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1995-12-07T01:28:41Z","cross_cats_sorted":[],"title_canon_sha256":"aeab9fd4844bb8c4e8539cd2ef76119f23b9fb92ab8ef96a5a856bfb817a4d9f","abstract_canon_sha256":"485cb5463e2b590d9073ed55d6a675b7df229b023f63393bf1bc2c6071798cea"},"schema_version":"1.0"},"canonical_sha256":"19af109a2111503ab31f056aeb5798cbd57388084c6e6021d864d3bb317d9010","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:41.234806Z","signature_b64":"h9lIUQqQlW2ubZLc8ejZKHxYhgzESeRqT0T526yR8eammXQ59M85JlSq5YnzTifQKa5AresZVgPqMRjo8jT0BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"19af109a2111503ab31f056aeb5798cbd57388084c6e6021d864d3bb317d9010","last_reissued_at":"2026-05-18T01:07:41.234354Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:41.234354Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9512033","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":"2026-05-18T01:07:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"in1ixFmR8OGrTdUqF+m5xw1tvoito/PIGM7yDXsXPEEAue+KSMA0kA5iQICYDRiTLJTHiQHPNn5iaI+pHQ61AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T05:15:24.063102Z"},"content_sha256":"a86e23774a2676c0562efd6e57dbd30814ac78609920e44102456668fb780502","schema_version":"1.0","event_id":"sha256:a86e23774a2676c0562efd6e57dbd30814ac78609920e44102456668fb780502"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1995:DGXRBGRBCFIDVMY7AVVOWV4YZP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Serendipitous Discovery of a Group or Cluster of young Galaxies at z=2.40 in Deep Hubble Space Telescope WFPC2 Images","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Eric J. Ostrander (ASU), Rogier A. Windhorst (ASU), Sebastian M. Pascarelle (ASU), Simon P. Driver (ASU), William C. Keel (UoAl)","submitted_at":"1995-12-07T01:28:41Z","abstract_excerpt":"We report the serendipitous discovery of a group or cluster of young galaxies at $z\\simeq$2.40 in a 24-orbit HST/WFPC2 exposure of the field around the weak radio galaxy 53W002. Potential cluster members were identified on ground-based narrow-band redshifted Ly$\\alpha$ images and confirmed via spectroscopy.\n In addition to the known weak radio galaxy 53W002 at z=2.390, two other objects were found to have excess narrow-band Ly$\\alpha$ emission at $z\\simeq$2.40. Both have been spectroscopically confirmed, and one clearly contains a weak AGN. They are located within one arcminute of 53W002, or $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9512033","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":"2026-05-18T01:07:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SXZB+HcyBW6ffonzE0PpDiWZPikLCou+BYPVWDlc3q60bmm1KNN6xdNZt1jkqGXukgk+14LuOOxoR0UFvvzkDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T05:15:24.063454Z"},"content_sha256":"1ec3c71190f6400b8d23fffced2b449583ecd83f1a9881805236290fbdf8c7b1","schema_version":"1.0","event_id":"sha256:1ec3c71190f6400b8d23fffced2b449583ecd83f1a9881805236290fbdf8c7b1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DGXRBGRBCFIDVMY7AVVOWV4YZP/bundle.json","state_url":"https://pith.science/pith/DGXRBGRBCFIDVMY7AVVOWV4YZP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DGXRBGRBCFIDVMY7AVVOWV4YZP/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":"2026-06-27T05:15:24Z","links":{"resolver":"https://pith.science/pith/DGXRBGRBCFIDVMY7AVVOWV4YZP","bundle":"https://pith.science/pith/DGXRBGRBCFIDVMY7AVVOWV4YZP/bundle.json","state":"https://pith.science/pith/DGXRBGRBCFIDVMY7AVVOWV4YZP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DGXRBGRBCFIDVMY7AVVOWV4YZP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:DGXRBGRBCFIDVMY7AVVOWV4YZP","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":"485cb5463e2b590d9073ed55d6a675b7df229b023f63393bf1bc2c6071798cea","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-12-07T01:28:41Z","title_canon_sha256":"aeab9fd4844bb8c4e8539cd2ef76119f23b9fb92ab8ef96a5a856bfb817a4d9f"},"schema_version":"1.0","source":{"id":"astro-ph/9512033","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9512033","created_at":"2026-05-18T01:07:41Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9512033v1","created_at":"2026-05-18T01:07:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9512033","created_at":"2026-05-18T01:07:41Z"},{"alias_kind":"pith_short_12","alias_value":"DGXRBGRBCFID","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"DGXRBGRBCFIDVMY7","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"DGXRBGRB","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:1ec3c71190f6400b8d23fffced2b449583ecd83f1a9881805236290fbdf8c7b1","target":"graph","created_at":"2026-05-18T01:07:41Z","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":"We report the serendipitous discovery of a group or cluster of young galaxies at $z\\simeq$2.40 in a 24-orbit HST/WFPC2 exposure of the field around the weak radio galaxy 53W002. Potential cluster members were identified on ground-based narrow-band redshifted Ly$\\alpha$ images and confirmed via spectroscopy.\n In addition to the known weak radio galaxy 53W002 at z=2.390, two other objects were found to have excess narrow-band Ly$\\alpha$ emission at $z\\simeq$2.40. Both have been spectroscopically confirmed, and one clearly contains a weak AGN. They are located within one arcminute of 53W002, or $","authors_text":"Eric J. Ostrander (ASU), Rogier A. Windhorst (ASU), Sebastian M. Pascarelle (ASU), Simon P. Driver (ASU), William C. Keel (UoAl)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1995-12-07T01:28:41Z","title":"The Serendipitous Discovery of a Group or Cluster of young Galaxies at z=2.40 in Deep Hubble Space Telescope WFPC2 Images"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9512033","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:a86e23774a2676c0562efd6e57dbd30814ac78609920e44102456668fb780502","target":"record","created_at":"2026-05-18T01:07:41Z","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":"485cb5463e2b590d9073ed55d6a675b7df229b023f63393bf1bc2c6071798cea","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1995-12-07T01:28:41Z","title_canon_sha256":"aeab9fd4844bb8c4e8539cd2ef76119f23b9fb92ab8ef96a5a856bfb817a4d9f"},"schema_version":"1.0","source":{"id":"astro-ph/9512033","kind":"arxiv","version":1}},"canonical_sha256":"19af109a2111503ab31f056aeb5798cbd57388084c6e6021d864d3bb317d9010","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"19af109a2111503ab31f056aeb5798cbd57388084c6e6021d864d3bb317d9010","first_computed_at":"2026-05-18T01:07:41.234354Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:41.234354Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h9lIUQqQlW2ubZLc8ejZKHxYhgzESeRqT0T526yR8eammXQ59M85JlSq5YnzTifQKa5AresZVgPqMRjo8jT0BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:41.234806Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9512033","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a86e23774a2676c0562efd6e57dbd30814ac78609920e44102456668fb780502","sha256:1ec3c71190f6400b8d23fffced2b449583ecd83f1a9881805236290fbdf8c7b1"],"state_sha256":"871a127ce13a34e15bca44d0131438808db9038ff90bdac5450abcde2fc5b059"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CPyWuWjkahjePe0B5WWV4i8X8y+HCfF6+Q2BS2Kq0WO4m6c2tvfUhnkFgm4Pa1j6BWQBBXsNxylSParRPsuVCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T05:15:24.065336Z","bundle_sha256":"ae641de4dc9c67743f2e936a32d735c0a53b85e94ff014aeee89df38fb146158"}}