{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:OAHYEUDQDI4PWHQTEAW5ZKUZTJ","short_pith_number":"pith:OAHYEUDQ","canonical_record":{"source":{"id":"1605.02079","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-06T20:00:17Z","cross_cats_sorted":[],"title_canon_sha256":"f5f4860f4946fe6160f577d1a52d669210d8972e8fc4be3169c5633914bcf1cd","abstract_canon_sha256":"cbd93bffe6a091e5819abe12a6f0dc1190b6652b8e3570ee65eaed4a3f92af56"},"schema_version":"1.0"},"canonical_sha256":"700f8250701a38fb1e13202ddcaa999a5e245fc96875b1ac9e109fadc6052b6e","source":{"kind":"arxiv","id":"1605.02079","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.02079","created_at":"2026-05-18T01:12:29Z"},{"alias_kind":"arxiv_version","alias_value":"1605.02079v2","created_at":"2026-05-18T01:12:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.02079","created_at":"2026-05-18T01:12:29Z"},{"alias_kind":"pith_short_12","alias_value":"OAHYEUDQDI4P","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"OAHYEUDQDI4PWHQT","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"OAHYEUDQ","created_at":"2026-05-18T12:30:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:OAHYEUDQDI4PWHQTEAW5ZKUZTJ","target":"record","payload":{"canonical_record":{"source":{"id":"1605.02079","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-06T20:00:17Z","cross_cats_sorted":[],"title_canon_sha256":"f5f4860f4946fe6160f577d1a52d669210d8972e8fc4be3169c5633914bcf1cd","abstract_canon_sha256":"cbd93bffe6a091e5819abe12a6f0dc1190b6652b8e3570ee65eaed4a3f92af56"},"schema_version":"1.0"},"canonical_sha256":"700f8250701a38fb1e13202ddcaa999a5e245fc96875b1ac9e109fadc6052b6e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:29.339737Z","signature_b64":"iEYteeBgFCHf8XQA3WB45gpbL8I3s3yZ6tEAMDMnBmzL5a8i9xImm3TJvpWySWesxvKy5Y8DjQ06TEQN7iiKBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"700f8250701a38fb1e13202ddcaa999a5e245fc96875b1ac9e109fadc6052b6e","last_reissued_at":"2026-05-18T01:12:29.339395Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:29.339395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.02079","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:12:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EgfhV9dfppn3TEWSC1DEjlgDpp/dAA8Ub6xd2HdvweonFdfK0MCa9RJeljsnNB1wFSyRiAs1x60nY2tkdYcjAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T16:10:11.477773Z"},"content_sha256":"ff40f489dde8fcd314eb4f058204d3977a7ea4e836fecb755b6eda93dc6d5b49","schema_version":"1.0","event_id":"sha256:ff40f489dde8fcd314eb4f058204d3977a7ea4e836fecb755b6eda93dc6d5b49"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:OAHYEUDQDI4PWHQTEAW5ZKUZTJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Substructure within the SSA22 protocluster at $z\\approx3.09$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alice E. Shapley, Charles C. Steidel, Michael W. Topping","submitted_at":"2016-05-06T20:00:17Z","abstract_excerpt":"We present the results of a densely sampled spectroscopic survey of the SSA22 protocluster at $z\\approx 3.09$. Our sample with Keck/LRIS spectroscopy includes 106 Ly$\\alpha$ Emitters (LAEs) and 40 Lyman Break Galaxies (LBGs) at $z=3.05-3.12$. These galaxies are contained within the $9'\\times9'$ region in which the protocluster was discovered, which also hosts the maximum galaxy overdensity in the SSA22 region. The redshift histogram of our spectroscopic sample reveals two distinct peaks, at $z=3.069$ (blue, 43 galaxies) and $z=3.095$ (red, 103 galaxies). Furthermore, objects in the blue and re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.02079","kind":"arxiv","version":2},"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":"2026-05-18T01:12:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RYNJWRiEJLzyTu7hvTyxW+l+xa5AppL/XHBgYEHQYYHv650qgIcqkoUmBVJMuFW1PTs9HlKqfMaOB1Gf/BsuAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T16:10:11.478463Z"},"content_sha256":"48b649312183bbfcba4a9d7bad8c57d49d88aa46707fab59489efed682e3be5d","schema_version":"1.0","event_id":"sha256:48b649312183bbfcba4a9d7bad8c57d49d88aa46707fab59489efed682e3be5d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OAHYEUDQDI4PWHQTEAW5ZKUZTJ/bundle.json","state_url":"https://pith.science/pith/OAHYEUDQDI4PWHQTEAW5ZKUZTJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OAHYEUDQDI4PWHQTEAW5ZKUZTJ/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":"2026-05-26T16:10:11Z","links":{"resolver":"https://pith.science/pith/OAHYEUDQDI4PWHQTEAW5ZKUZTJ","bundle":"https://pith.science/pith/OAHYEUDQDI4PWHQTEAW5ZKUZTJ/bundle.json","state":"https://pith.science/pith/OAHYEUDQDI4PWHQTEAW5ZKUZTJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OAHYEUDQDI4PWHQTEAW5ZKUZTJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:OAHYEUDQDI4PWHQTEAW5ZKUZTJ","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":"cbd93bffe6a091e5819abe12a6f0dc1190b6652b8e3570ee65eaed4a3f92af56","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-06T20:00:17Z","title_canon_sha256":"f5f4860f4946fe6160f577d1a52d669210d8972e8fc4be3169c5633914bcf1cd"},"schema_version":"1.0","source":{"id":"1605.02079","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.02079","created_at":"2026-05-18T01:12:29Z"},{"alias_kind":"arxiv_version","alias_value":"1605.02079v2","created_at":"2026-05-18T01:12:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.02079","created_at":"2026-05-18T01:12:29Z"},{"alias_kind":"pith_short_12","alias_value":"OAHYEUDQDI4P","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"OAHYEUDQDI4PWHQT","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"OAHYEUDQ","created_at":"2026-05-18T12:30:36Z"}],"graph_snapshots":[{"event_id":"sha256:48b649312183bbfcba4a9d7bad8c57d49d88aa46707fab59489efed682e3be5d","target":"graph","created_at":"2026-05-18T01:12:29Z","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 present the results of a densely sampled spectroscopic survey of the SSA22 protocluster at $z\\approx 3.09$. Our sample with Keck/LRIS spectroscopy includes 106 Ly$\\alpha$ Emitters (LAEs) and 40 Lyman Break Galaxies (LBGs) at $z=3.05-3.12$. These galaxies are contained within the $9'\\times9'$ region in which the protocluster was discovered, which also hosts the maximum galaxy overdensity in the SSA22 region. The redshift histogram of our spectroscopic sample reveals two distinct peaks, at $z=3.069$ (blue, 43 galaxies) and $z=3.095$ (red, 103 galaxies). Furthermore, objects in the blue and re","authors_text":"Alice E. Shapley, Charles C. Steidel, Michael W. Topping","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-06T20:00:17Z","title":"Substructure within the SSA22 protocluster at $z\\approx3.09$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.02079","kind":"arxiv","version":2},"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:ff40f489dde8fcd314eb4f058204d3977a7ea4e836fecb755b6eda93dc6d5b49","target":"record","created_at":"2026-05-18T01:12:29Z","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":"cbd93bffe6a091e5819abe12a6f0dc1190b6652b8e3570ee65eaed4a3f92af56","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-05-06T20:00:17Z","title_canon_sha256":"f5f4860f4946fe6160f577d1a52d669210d8972e8fc4be3169c5633914bcf1cd"},"schema_version":"1.0","source":{"id":"1605.02079","kind":"arxiv","version":2}},"canonical_sha256":"700f8250701a38fb1e13202ddcaa999a5e245fc96875b1ac9e109fadc6052b6e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"700f8250701a38fb1e13202ddcaa999a5e245fc96875b1ac9e109fadc6052b6e","first_computed_at":"2026-05-18T01:12:29.339395Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:29.339395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iEYteeBgFCHf8XQA3WB45gpbL8I3s3yZ6tEAMDMnBmzL5a8i9xImm3TJvpWySWesxvKy5Y8DjQ06TEQN7iiKBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:29.339737Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.02079","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ff40f489dde8fcd314eb4f058204d3977a7ea4e836fecb755b6eda93dc6d5b49","sha256:48b649312183bbfcba4a9d7bad8c57d49d88aa46707fab59489efed682e3be5d"],"state_sha256":"0773dde4110bbcb3383b78484b4317e3f5ae7e08f68191416ab2278bb6ddba21"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gLqGEX1QgjFf5n4vrl0eQPzlxhuCLMZPoWZU7I2OEKeGbuCmALN8/2jfHxMDjcq9L8ip3H53APZNjnO3ug/VCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T16:10:11.481813Z","bundle_sha256":"1b93de129b1a4208e96dc950bd9ef93b5d61d133097007d4347e541a552945e6"}}