{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:OEUQN3TXW325JZJHVXWJUY5WJW","short_pith_number":"pith:OEUQN3TX","canonical_record":{"source":{"id":"0807.0810","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-07-06T19:22:44Z","cross_cats_sorted":[],"title_canon_sha256":"fbd8d669ebe82712218a1fd6936a7708dee1a2d87762a6c85439297b15aa3d6b","abstract_canon_sha256":"d396fbe119f13f7779873e859f856d3918cff1f907fafb2f719962bcc440469a"},"schema_version":"1.0"},"canonical_sha256":"712906ee77b6f5d4e527adec9a63b64d89376514b3efb957ecf644ba12652293","source":{"kind":"arxiv","id":"0807.0810","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0807.0810","created_at":"2026-07-04T17:26:54Z"},{"alias_kind":"arxiv_version","alias_value":"0807.0810v2","created_at":"2026-07-04T17:26:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0807.0810","created_at":"2026-07-04T17:26:54Z"},{"alias_kind":"pith_short_12","alias_value":"OEUQN3TXW325","created_at":"2026-07-04T17:26:54Z"},{"alias_kind":"pith_short_16","alias_value":"OEUQN3TXW325JZJH","created_at":"2026-07-04T17:26:54Z"},{"alias_kind":"pith_short_8","alias_value":"OEUQN3TX","created_at":"2026-07-04T17:26:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:OEUQN3TXW325JZJHVXWJUY5WJW","target":"record","payload":{"canonical_record":{"source":{"id":"0807.0810","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-07-06T19:22:44Z","cross_cats_sorted":[],"title_canon_sha256":"fbd8d669ebe82712218a1fd6936a7708dee1a2d87762a6c85439297b15aa3d6b","abstract_canon_sha256":"d396fbe119f13f7779873e859f856d3918cff1f907fafb2f719962bcc440469a"},"schema_version":"1.0"},"canonical_sha256":"712906ee77b6f5d4e527adec9a63b64d89376514b3efb957ecf644ba12652293","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:26:54.486496Z","signature_b64":"283GnCkp42OQLKJBoHPU4a5OUCmYc9sOI+UJMB/CBNV2IC5sCm2zch/KwvcMfVXXHYcCAujrc5eopIcb62fdAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"712906ee77b6f5d4e527adec9a63b64d89376514b3efb957ecf644ba12652293","last_reissued_at":"2026-07-04T17:26:54.486087Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:26:54.486087Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0807.0810","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":"2026-07-04T17:26:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E313VbQ4NvPZ4Diydz3OGRUH7fGlQP8M6KvlaUynD9ifY+SLJFOGagMbr/+HRLwiyJf7mtwO4y/08KU2quoWBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T09:31:49.113454Z"},"content_sha256":"bebef429329d1003aec7248c5e0ad25de3aa4b865a87a4630995efe2a9ffbed8","schema_version":"1.0","event_id":"sha256:bebef429329d1003aec7248c5e0ad25de3aa4b865a87a4630995efe2a9ffbed8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:OEUQN3TXW325JZJHVXWJUY5WJW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reconstructing the history of structure formation using redshift distortions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"ICG), Will J. Percival (Portsmouth, Yong-Seon Song","submitted_at":"2008-07-06T19:22:44Z","abstract_excerpt":"Measuring the statistics of galaxy peculiar velocities using redshift-space distortions is an excellent way of probing the history of structure formation. Because galaxies are expected to act as test particles within the flow of matter, this method avoids uncertainties due to an unknown galaxy density bias. We show that the parameter combination measured by redshift-space distortions, $f\\sigma_8^{\\rm mass}$ provides a good test of dark energy models, even without the knowledge of bias or $\\sigma_8^{\\rm mass}$ required to extract $f$ from this measurement (here $f$ is the logarithmic derivative"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0807.0810","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0807.0810/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":"2026-07-04T17:26:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9ba/O9fFZGmXVDIMXnxyTaW1gTxuSx03YHZC1mD/ZNTuT5pfyjiEP4C30XwMbPuFZH9FtbHGAz3wkUfTGNwIDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T09:31:49.113951Z"},"content_sha256":"fe60b43cc3b8c452be68935591b5ce56125ad1cc1507624850fd9239c816b325","schema_version":"1.0","event_id":"sha256:fe60b43cc3b8c452be68935591b5ce56125ad1cc1507624850fd9239c816b325"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OEUQN3TXW325JZJHVXWJUY5WJW/bundle.json","state_url":"https://pith.science/pith/OEUQN3TXW325JZJHVXWJUY5WJW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OEUQN3TXW325JZJHVXWJUY5WJW/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":"2026-08-23T09:31:49Z","links":{"resolver":"https://pith.science/pith/OEUQN3TXW325JZJHVXWJUY5WJW","bundle":"https://pith.science/pith/OEUQN3TXW325JZJHVXWJUY5WJW/bundle.json","state":"https://pith.science/pith/OEUQN3TXW325JZJHVXWJUY5WJW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OEUQN3TXW325JZJHVXWJUY5WJW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:OEUQN3TXW325JZJHVXWJUY5WJW","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":"d396fbe119f13f7779873e859f856d3918cff1f907fafb2f719962bcc440469a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-07-06T19:22:44Z","title_canon_sha256":"fbd8d669ebe82712218a1fd6936a7708dee1a2d87762a6c85439297b15aa3d6b"},"schema_version":"1.0","source":{"id":"0807.0810","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0807.0810","created_at":"2026-07-04T17:26:54Z"},{"alias_kind":"arxiv_version","alias_value":"0807.0810v2","created_at":"2026-07-04T17:26:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0807.0810","created_at":"2026-07-04T17:26:54Z"},{"alias_kind":"pith_short_12","alias_value":"OEUQN3TXW325","created_at":"2026-07-04T17:26:54Z"},{"alias_kind":"pith_short_16","alias_value":"OEUQN3TXW325JZJH","created_at":"2026-07-04T17:26:54Z"},{"alias_kind":"pith_short_8","alias_value":"OEUQN3TX","created_at":"2026-07-04T17:26:54Z"}],"graph_snapshots":[{"event_id":"sha256:fe60b43cc3b8c452be68935591b5ce56125ad1cc1507624850fd9239c816b325","target":"graph","created_at":"2026-07-04T17:26:54Z","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/0807.0810/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Measuring the statistics of galaxy peculiar velocities using redshift-space distortions is an excellent way of probing the history of structure formation. Because galaxies are expected to act as test particles within the flow of matter, this method avoids uncertainties due to an unknown galaxy density bias. We show that the parameter combination measured by redshift-space distortions, $f\\sigma_8^{\\rm mass}$ provides a good test of dark energy models, even without the knowledge of bias or $\\sigma_8^{\\rm mass}$ required to extract $f$ from this measurement (here $f$ is the logarithmic derivative","authors_text":"ICG), Will J. Percival (Portsmouth, Yong-Seon Song","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-07-06T19:22:44Z","title":"Reconstructing the history of structure formation using redshift distortions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0807.0810","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:bebef429329d1003aec7248c5e0ad25de3aa4b865a87a4630995efe2a9ffbed8","target":"record","created_at":"2026-07-04T17:26:54Z","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":"d396fbe119f13f7779873e859f856d3918cff1f907fafb2f719962bcc440469a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-07-06T19:22:44Z","title_canon_sha256":"fbd8d669ebe82712218a1fd6936a7708dee1a2d87762a6c85439297b15aa3d6b"},"schema_version":"1.0","source":{"id":"0807.0810","kind":"arxiv","version":2}},"canonical_sha256":"712906ee77b6f5d4e527adec9a63b64d89376514b3efb957ecf644ba12652293","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"712906ee77b6f5d4e527adec9a63b64d89376514b3efb957ecf644ba12652293","first_computed_at":"2026-07-04T17:26:54.486087Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:26:54.486087Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"283GnCkp42OQLKJBoHPU4a5OUCmYc9sOI+UJMB/CBNV2IC5sCm2zch/KwvcMfVXXHYcCAujrc5eopIcb62fdAA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:26:54.486496Z","signed_message":"canonical_sha256_bytes"},"source_id":"0807.0810","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bebef429329d1003aec7248c5e0ad25de3aa4b865a87a4630995efe2a9ffbed8","sha256:fe60b43cc3b8c452be68935591b5ce56125ad1cc1507624850fd9239c816b325"],"state_sha256":"665b9b3a640f84d90f200347ce5e0838482240c4736a4b7a1a63b14ed195f64a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U5kuj+LsiFpV+YrgAQX1MZ3x+PYNamFHzeR7llTLq/rgCRLMfLvb3dztwJyNIZ7SP6uk4zQClG9YFnGr0DD2Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T09:31:49.118276Z","bundle_sha256":"82f7bb534f63fe62727d302ebe0a420b66d76198f4b8b30dcc59a1e083397fb7"}}