{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:K5B6BIXGPR6HDHLI4VSO2BTRCX","short_pith_number":"pith:K5B6BIXG","canonical_record":{"source":{"id":"1310.7388","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-28T11:48:29Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"4a434c94ede22d285543059c452b81b079cce2baf7567a6a06969c80f317085e","abstract_canon_sha256":"2e98cc6541270151318665716a87a18d034784930c51acc7cca1b593f739ce02"},"schema_version":"1.0"},"canonical_sha256":"5743e0a2e67c7c719d68e564ed067115cae53e587d0bcd5c3ebc28060ed7f217","source":{"kind":"arxiv","id":"1310.7388","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.7388","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"arxiv_version","alias_value":"1310.7388v1","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.7388","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"pith_short_12","alias_value":"K5B6BIXGPR6H","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"K5B6BIXGPR6HDHLI","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"K5B6BIXG","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:K5B6BIXGPR6HDHLI4VSO2BTRCX","target":"record","payload":{"canonical_record":{"source":{"id":"1310.7388","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-28T11:48:29Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"4a434c94ede22d285543059c452b81b079cce2baf7567a6a06969c80f317085e","abstract_canon_sha256":"2e98cc6541270151318665716a87a18d034784930c51acc7cca1b593f739ce02"},"schema_version":"1.0"},"canonical_sha256":"5743e0a2e67c7c719d68e564ed067115cae53e587d0bcd5c3ebc28060ed7f217","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:08:45.486757Z","signature_b64":"50Vf4a96XX5AiOB+7vFXVQWqjp7mLg1Ns9GGExuFAsjD2LVTDpiO0/bhH6wMbSMkIEhEOI3fAm4fc1dX+121BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5743e0a2e67c7c719d68e564ed067115cae53e587d0bcd5c3ebc28060ed7f217","last_reissued_at":"2026-05-18T03:08:45.486189Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:08:45.486189Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.7388","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":"2026-05-18T03:08:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dx6KNkNnXcy4LT5Dkga0vPrPFBlQycI60+VsB+f7O/lTzSiDyxc2+kcjqrTnSOXR6V9UiW+47/CTW3zH+2FRAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T06:14:12.150161Z"},"content_sha256":"ba76e95c4ae5393a3f33d27ba37375d0e4ebf39921d9798fbd7bd3e727e62587","schema_version":"1.0","event_id":"sha256:ba76e95c4ae5393a3f33d27ba37375d0e4ebf39921d9798fbd7bd3e727e62587"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:K5B6BIXGPR6HDHLI4VSO2BTRCX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Groups in the Millennium Simulation and in SDSS DR7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"E. Saar, E. Tago, E. Tempel, J. Einasto, M. Einasto, M. Gramann, P. Hein\\\"am\\\"aki, P. Nurmi, T. Sepp","submitted_at":"2013-10-28T11:48:29Z","abstract_excerpt":"The Millennium N-body simulation and the Sloan Digital Sky Survey seventh data release (SDSS DR7) galaxy and galaxy group catalogues are compared to study the properties of galaxy groups and the distribution of galaxies in groups. We construct mock galaxy group catalogues for a Millennium semi-analytical galaxy catalogue by using the same friends-of-friends method, which was used by Tago et al to analyse the SDSS data. We analyse in detail the group luminosities, group richnesses, virial radii, sizes of groups and their rms velocities for four volume-limited samples from observations and simul"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.7388","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":"2026-05-18T03:08:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6CWyR/JATspT4NvMc9Pfjti2yMbLjNUPtOEoIa/LBQmwCO00iL7EDFnCB4Zp1g5cAxe4MccNwKi2TqYj4/+yAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T06:14:12.150857Z"},"content_sha256":"1e41cc64b7fa280259f405f8b973378f659a529fe19b5f4c8e435c62649a47ef","schema_version":"1.0","event_id":"sha256:1e41cc64b7fa280259f405f8b973378f659a529fe19b5f4c8e435c62649a47ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K5B6BIXGPR6HDHLI4VSO2BTRCX/bundle.json","state_url":"https://pith.science/pith/K5B6BIXGPR6HDHLI4VSO2BTRCX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K5B6BIXGPR6HDHLI4VSO2BTRCX/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":"2026-06-07T06:14:12Z","links":{"resolver":"https://pith.science/pith/K5B6BIXGPR6HDHLI4VSO2BTRCX","bundle":"https://pith.science/pith/K5B6BIXGPR6HDHLI4VSO2BTRCX/bundle.json","state":"https://pith.science/pith/K5B6BIXGPR6HDHLI4VSO2BTRCX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K5B6BIXGPR6HDHLI4VSO2BTRCX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:K5B6BIXGPR6HDHLI4VSO2BTRCX","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":"2e98cc6541270151318665716a87a18d034784930c51acc7cca1b593f739ce02","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-28T11:48:29Z","title_canon_sha256":"4a434c94ede22d285543059c452b81b079cce2baf7567a6a06969c80f317085e"},"schema_version":"1.0","source":{"id":"1310.7388","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.7388","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"arxiv_version","alias_value":"1310.7388v1","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.7388","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"pith_short_12","alias_value":"K5B6BIXGPR6H","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"K5B6BIXGPR6HDHLI","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"K5B6BIXG","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:1e41cc64b7fa280259f405f8b973378f659a529fe19b5f4c8e435c62649a47ef","target":"graph","created_at":"2026-05-18T03:08:45Z","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"},"paper":{"abstract_excerpt":"The Millennium N-body simulation and the Sloan Digital Sky Survey seventh data release (SDSS DR7) galaxy and galaxy group catalogues are compared to study the properties of galaxy groups and the distribution of galaxies in groups. We construct mock galaxy group catalogues for a Millennium semi-analytical galaxy catalogue by using the same friends-of-friends method, which was used by Tago et al to analyse the SDSS data. We analyse in detail the group luminosities, group richnesses, virial radii, sizes of groups and their rms velocities for four volume-limited samples from observations and simul","authors_text":"E. Saar, E. Tago, E. Tempel, J. Einasto, M. Einasto, M. Gramann, P. Hein\\\"am\\\"aki, P. Nurmi, T. Sepp","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-28T11:48:29Z","title":"Groups in the Millennium Simulation and in SDSS DR7"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.7388","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:ba76e95c4ae5393a3f33d27ba37375d0e4ebf39921d9798fbd7bd3e727e62587","target":"record","created_at":"2026-05-18T03:08:45Z","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":"2e98cc6541270151318665716a87a18d034784930c51acc7cca1b593f739ce02","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-10-28T11:48:29Z","title_canon_sha256":"4a434c94ede22d285543059c452b81b079cce2baf7567a6a06969c80f317085e"},"schema_version":"1.0","source":{"id":"1310.7388","kind":"arxiv","version":1}},"canonical_sha256":"5743e0a2e67c7c719d68e564ed067115cae53e587d0bcd5c3ebc28060ed7f217","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5743e0a2e67c7c719d68e564ed067115cae53e587d0bcd5c3ebc28060ed7f217","first_computed_at":"2026-05-18T03:08:45.486189Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:08:45.486189Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"50Vf4a96XX5AiOB+7vFXVQWqjp7mLg1Ns9GGExuFAsjD2LVTDpiO0/bhH6wMbSMkIEhEOI3fAm4fc1dX+121BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:08:45.486757Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.7388","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ba76e95c4ae5393a3f33d27ba37375d0e4ebf39921d9798fbd7bd3e727e62587","sha256:1e41cc64b7fa280259f405f8b973378f659a529fe19b5f4c8e435c62649a47ef"],"state_sha256":"0485a8fe5e3dc8b0d3491d8cdec87b91f0c1ee8a2efe336d3d4404890f383a0e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"umcvpwr1aCLh3Wv8NxRLDNWsR32yk09edX3KGNNSM/R7wm8aYv7ZbojtUl7p50VxZEFMN9iHh6+UVfw4+ugsDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T06:14:12.154047Z","bundle_sha256":"43738bed44bcdb83c0d8abbd27fd9dc0cdbfd602dbe872d86b0dbe169915fbd3"}}