{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:5YHD5XADEVTMBDKROLDH56X7IV","short_pith_number":"pith:5YHD5XAD","canonical_record":{"source":{"id":"2210.10761","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-10-19T17:56:26Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"e0178082c143947073b4563ff5d9b92b3685c64aa7fca3cf84381fb8ec469ea2","abstract_canon_sha256":"d5367e75cdcf636be1d3ef0eb5892ce9f4ce1e1bc50722307acd44031b9518a2"},"schema_version":"1.0"},"canonical_sha256":"ee0e3edc032566c08d5172c67efaff45731680a59559f466c59e5ad502a3b6d9","source":{"kind":"arxiv","id":"2210.10761","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.10761","created_at":"2026-07-05T06:24:45Z"},{"alias_kind":"arxiv_version","alias_value":"2210.10761v3","created_at":"2026-07-05T06:24:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.10761","created_at":"2026-07-05T06:24:45Z"},{"alias_kind":"pith_short_12","alias_value":"5YHD5XADEVTM","created_at":"2026-07-05T06:24:45Z"},{"alias_kind":"pith_short_16","alias_value":"5YHD5XADEVTMBDKR","created_at":"2026-07-05T06:24:45Z"},{"alias_kind":"pith_short_8","alias_value":"5YHD5XAD","created_at":"2026-07-05T06:24:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:5YHD5XADEVTMBDKROLDH56X7IV","target":"record","payload":{"canonical_record":{"source":{"id":"2210.10761","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-10-19T17:56:26Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"e0178082c143947073b4563ff5d9b92b3685c64aa7fca3cf84381fb8ec469ea2","abstract_canon_sha256":"d5367e75cdcf636be1d3ef0eb5892ce9f4ce1e1bc50722307acd44031b9518a2"},"schema_version":"1.0"},"canonical_sha256":"ee0e3edc032566c08d5172c67efaff45731680a59559f466c59e5ad502a3b6d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:24:45.169087Z","signature_b64":"nTxYNY0ID6eBR9Ee0LcgVGC0hftmC1noI731ljL7ZIz/PG5OaWsVy/CO84TsMZbHs9sNMeI39MdQVxt5RNAsAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ee0e3edc032566c08d5172c67efaff45731680a59559f466c59e5ad502a3b6d9","last_reissued_at":"2026-07-05T06:24:45.168671Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:24:45.168671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2210.10761","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:24:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pYPyoS9OCZEkrHsfPSmrS+jh2GPyuNpzB4f6NjyC1WwksbSY3e/iXG2n+ZKXQSXOU0VLK6EzSF7nC8yN4JNGCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T23:27:48.099390Z"},"content_sha256":"58c4cd08a1a82e01ff5fd433b9e3b1757cbd039d4d2644d21932dc08b16f097c","schema_version":"1.0","event_id":"sha256:58c4cd08a1a82e01ff5fd433b9e3b1757cbd039d4d2644d21932dc08b16f097c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:5YHD5XADEVTMBDKROLDH56X7IV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Death at watersheds: galaxy quenching in low-density environments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Elmo Tempel, Jaan Einasto, Lauri Juhan Liivam\\\"agi, Maret Einasto, Peeter Tenjes, Rain Kipper","submitted_at":"2022-10-19T17:56:26Z","abstract_excerpt":"Our aim is to understand the effect of environment to galaxy quenching in various local and global environments. We focus on galaxies with very old stellar populations (VO galaxies), typically found in the centers of clusters and groups, and search for such galaxies in the lowest global density environments, watersheds between superclusters. We use the Sloan Digital Sky Survey MAIN galaxy sample to calculate the luminosity-density field and get global density field, to determine groups and filaments, and to obtain data on galaxy properties. We divide groups into low- and high-luminosity groups"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.10761","kind":"arxiv","version":3},"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/2210.10761/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":"2026-07-05T06:24:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kcehSMvxTjcBNDFGZKlS1NydGHOAOG7nidnh/CDIWXsuPGQlKiD8e8TodZk41uxubDMIaJ+DUJUG3fsfxIc4CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T23:27:48.100002Z"},"content_sha256":"1243fb16ebcda73a633a4fac91f92dd25e2517d47fd605e859187f7e8d7a8519","schema_version":"1.0","event_id":"sha256:1243fb16ebcda73a633a4fac91f92dd25e2517d47fd605e859187f7e8d7a8519"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5YHD5XADEVTMBDKROLDH56X7IV/bundle.json","state_url":"https://pith.science/pith/5YHD5XADEVTMBDKROLDH56X7IV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5YHD5XADEVTMBDKROLDH56X7IV/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":"2026-08-05T23:27:48Z","links":{"resolver":"https://pith.science/pith/5YHD5XADEVTMBDKROLDH56X7IV","bundle":"https://pith.science/pith/5YHD5XADEVTMBDKROLDH56X7IV/bundle.json","state":"https://pith.science/pith/5YHD5XADEVTMBDKROLDH56X7IV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5YHD5XADEVTMBDKROLDH56X7IV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:5YHD5XADEVTMBDKROLDH56X7IV","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":"d5367e75cdcf636be1d3ef0eb5892ce9f4ce1e1bc50722307acd44031b9518a2","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-10-19T17:56:26Z","title_canon_sha256":"e0178082c143947073b4563ff5d9b92b3685c64aa7fca3cf84381fb8ec469ea2"},"schema_version":"1.0","source":{"id":"2210.10761","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.10761","created_at":"2026-07-05T06:24:45Z"},{"alias_kind":"arxiv_version","alias_value":"2210.10761v3","created_at":"2026-07-05T06:24:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.10761","created_at":"2026-07-05T06:24:45Z"},{"alias_kind":"pith_short_12","alias_value":"5YHD5XADEVTM","created_at":"2026-07-05T06:24:45Z"},{"alias_kind":"pith_short_16","alias_value":"5YHD5XADEVTMBDKR","created_at":"2026-07-05T06:24:45Z"},{"alias_kind":"pith_short_8","alias_value":"5YHD5XAD","created_at":"2026-07-05T06:24:45Z"}],"graph_snapshots":[{"event_id":"sha256:1243fb16ebcda73a633a4fac91f92dd25e2517d47fd605e859187f7e8d7a8519","target":"graph","created_at":"2026-07-05T06:24:45Z","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/2210.10761/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Our aim is to understand the effect of environment to galaxy quenching in various local and global environments. We focus on galaxies with very old stellar populations (VO galaxies), typically found in the centers of clusters and groups, and search for such galaxies in the lowest global density environments, watersheds between superclusters. We use the Sloan Digital Sky Survey MAIN galaxy sample to calculate the luminosity-density field and get global density field, to determine groups and filaments, and to obtain data on galaxy properties. We divide groups into low- and high-luminosity groups","authors_text":"Elmo Tempel, Jaan Einasto, Lauri Juhan Liivam\\\"agi, Maret Einasto, Peeter Tenjes, Rain Kipper","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-10-19T17:56:26Z","title":"Death at watersheds: galaxy quenching in low-density environments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.10761","kind":"arxiv","version":3},"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":"sha256:58c4cd08a1a82e01ff5fd433b9e3b1757cbd039d4d2644d21932dc08b16f097c","target":"record","created_at":"2026-07-05T06:24:45Z","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":"d5367e75cdcf636be1d3ef0eb5892ce9f4ce1e1bc50722307acd44031b9518a2","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-10-19T17:56:26Z","title_canon_sha256":"e0178082c143947073b4563ff5d9b92b3685c64aa7fca3cf84381fb8ec469ea2"},"schema_version":"1.0","source":{"id":"2210.10761","kind":"arxiv","version":3}},"canonical_sha256":"ee0e3edc032566c08d5172c67efaff45731680a59559f466c59e5ad502a3b6d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ee0e3edc032566c08d5172c67efaff45731680a59559f466c59e5ad502a3b6d9","first_computed_at":"2026-07-05T06:24:45.168671Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:24:45.168671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nTxYNY0ID6eBR9Ee0LcgVGC0hftmC1noI731ljL7ZIz/PG5OaWsVy/CO84TsMZbHs9sNMeI39MdQVxt5RNAsAw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:24:45.169087Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.10761","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58c4cd08a1a82e01ff5fd433b9e3b1757cbd039d4d2644d21932dc08b16f097c","sha256:1243fb16ebcda73a633a4fac91f92dd25e2517d47fd605e859187f7e8d7a8519"],"state_sha256":"731ca212b7d719a33a1d114321dba6c3e9277d03642f6e634c9cf840a53bfe08"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kb1LGLwy7AjNemJR0BA/ltXl9WCreEbQZHJp4cTPlzcgBXUHYGc0HhU01OFHy6vKj5lSozqtndiB6bF02RRtDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T23:27:48.103504Z","bundle_sha256":"5e9b6aabe49a3f796782356182284c946b6d1d3783730c2fd1eaf70d9040ead9"}}