{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:WWKWBW52TXSCKMP4A5SZOFVZAX","short_pith_number":"pith:WWKWBW52","canonical_record":{"source":{"id":"astro-ph/0703571","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-21T20:21:13Z","cross_cats_sorted":[],"title_canon_sha256":"7eed466d10eaea1d47e293be566a3f2ec4a0ee3ef7cad23b720ffdb5ec522320","abstract_canon_sha256":"8b8fc469b3b2da264c4888ce7ffd621f430abb21262a71008de3ba254bc0e8a3"},"schema_version":"1.0"},"canonical_sha256":"b59560dbba9de42531fc07659716b905cfc3a66824e566272281070e8e41ba69","source":{"kind":"arxiv","id":"astro-ph/0703571","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0703571","created_at":"2026-07-04T15:00:20Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703571v1","created_at":"2026-07-04T15:00:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703571","created_at":"2026-07-04T15:00:20Z"},{"alias_kind":"pith_short_12","alias_value":"WWKWBW52TXSC","created_at":"2026-07-04T15:00:20Z"},{"alias_kind":"pith_short_16","alias_value":"WWKWBW52TXSCKMP4","created_at":"2026-07-04T15:00:20Z"},{"alias_kind":"pith_short_8","alias_value":"WWKWBW52","created_at":"2026-07-04T15:00:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:WWKWBW52TXSCKMP4A5SZOFVZAX","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0703571","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-21T20:21:13Z","cross_cats_sorted":[],"title_canon_sha256":"7eed466d10eaea1d47e293be566a3f2ec4a0ee3ef7cad23b720ffdb5ec522320","abstract_canon_sha256":"8b8fc469b3b2da264c4888ce7ffd621f430abb21262a71008de3ba254bc0e8a3"},"schema_version":"1.0"},"canonical_sha256":"b59560dbba9de42531fc07659716b905cfc3a66824e566272281070e8e41ba69","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:00:20.290004Z","signature_b64":"bCj7EXW6XUNoSSvb3pBftolzjSC3E3b8RlwCXFtUagUfKGBVjP7EWgTzaJzJOTKPvxJh4Gs2hxg/Rx/KHxNXDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b59560dbba9de42531fc07659716b905cfc3a66824e566272281070e8e41ba69","last_reissued_at":"2026-07-04T15:00:20.289537Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:00:20.289537Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0703571","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":"2026-07-04T15:00:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0/BVwa5gZLX7/5Zst/klo6a0/GOFiCkZpAXUEknA41CwCFHR1uisUKcr/Y6jrVxthCj2UOz0FrTRpWkXmFjTDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T03:40:53.245506Z"},"content_sha256":"678b8258dd8c589c7ee84fd3ee993dc7121f10d77eb2380fa147c0a096907d51","schema_version":"1.0","event_id":"sha256:678b8258dd8c589c7ee84fd3ee993dc7121f10d77eb2380fa147c0a096907d51"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:WWKWBW52TXSCKMP4A5SZOFVZAX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmological Constraints from SDSS maxBCG Cluster Abundances","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"August E. Evrard, Benjamin P. Koester, David Johnston, Eduardo Rozo, Erin S. Sheldon, James Annis, Joshua A. Frieman, Risa H. Wechsler, Timothy A. McKay","submitted_at":"2007-03-21T20:21:13Z","abstract_excerpt":"We perform a maximum likelihood analysis of the cluster abundance measured in the SDSS using the maxBCG cluster finding algorithm. Our analysis is aimed at constraining the power spectrum normalization $\\sigma_8$, and assumes flat cosmologies with a scale invariant spectrum, massless neutrinos, and CMB and supernova priors Omega_m*h^2=0.128+/-0.01 and h=0.72+/-0.05 respectively. Following the method described in the companion paper Rozo et al. 2007, we derive \\sigma_8=0.92+/-0.10$ (1-sigma) after marginalizing over all major systematic uncertainties. We place strong lower limits on the normali"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703571","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0703571/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":"2026-07-04T15:00:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4zUUWTHwQdckK/84ivpSVCOI2AmLVtH4yOSngK3qvQDDWHLk46FYZ7NKqvrPmuTZwSCO7DTFxB4NrLhqfF2EBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T03:40:53.246107Z"},"content_sha256":"9997ae2f5e4742b38793606cbdd075d409fbd073c5eeabd24130d0fcc2b1dc99","schema_version":"1.0","event_id":"sha256:9997ae2f5e4742b38793606cbdd075d409fbd073c5eeabd24130d0fcc2b1dc99"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WWKWBW52TXSCKMP4A5SZOFVZAX/bundle.json","state_url":"https://pith.science/pith/WWKWBW52TXSCKMP4A5SZOFVZAX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WWKWBW52TXSCKMP4A5SZOFVZAX/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":"2026-08-06T03:40:53Z","links":{"resolver":"https://pith.science/pith/WWKWBW52TXSCKMP4A5SZOFVZAX","bundle":"https://pith.science/pith/WWKWBW52TXSCKMP4A5SZOFVZAX/bundle.json","state":"https://pith.science/pith/WWKWBW52TXSCKMP4A5SZOFVZAX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WWKWBW52TXSCKMP4A5SZOFVZAX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:WWKWBW52TXSCKMP4A5SZOFVZAX","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":"8b8fc469b3b2da264c4888ce7ffd621f430abb21262a71008de3ba254bc0e8a3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-21T20:21:13Z","title_canon_sha256":"7eed466d10eaea1d47e293be566a3f2ec4a0ee3ef7cad23b720ffdb5ec522320"},"schema_version":"1.0","source":{"id":"astro-ph/0703571","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0703571","created_at":"2026-07-04T15:00:20Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0703571v1","created_at":"2026-07-04T15:00:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0703571","created_at":"2026-07-04T15:00:20Z"},{"alias_kind":"pith_short_12","alias_value":"WWKWBW52TXSC","created_at":"2026-07-04T15:00:20Z"},{"alias_kind":"pith_short_16","alias_value":"WWKWBW52TXSCKMP4","created_at":"2026-07-04T15:00:20Z"},{"alias_kind":"pith_short_8","alias_value":"WWKWBW52","created_at":"2026-07-04T15:00:20Z"}],"graph_snapshots":[{"event_id":"sha256:9997ae2f5e4742b38793606cbdd075d409fbd073c5eeabd24130d0fcc2b1dc99","target":"graph","created_at":"2026-07-04T15:00:20Z","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/astro-ph/0703571/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We perform a maximum likelihood analysis of the cluster abundance measured in the SDSS using the maxBCG cluster finding algorithm. Our analysis is aimed at constraining the power spectrum normalization $\\sigma_8$, and assumes flat cosmologies with a scale invariant spectrum, massless neutrinos, and CMB and supernova priors Omega_m*h^2=0.128+/-0.01 and h=0.72+/-0.05 respectively. Following the method described in the companion paper Rozo et al. 2007, we derive \\sigma_8=0.92+/-0.10$ (1-sigma) after marginalizing over all major systematic uncertainties. We place strong lower limits on the normali","authors_text":"August E. Evrard, Benjamin P. Koester, David Johnston, Eduardo Rozo, Erin S. Sheldon, James Annis, Joshua A. Frieman, Risa H. Wechsler, Timothy A. McKay","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-03-21T20:21:13Z","title":"Cosmological Constraints from SDSS maxBCG Cluster Abundances"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0703571","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":"sha256:678b8258dd8c589c7ee84fd3ee993dc7121f10d77eb2380fa147c0a096907d51","target":"record","created_at":"2026-07-04T15:00:20Z","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":"8b8fc469b3b2da264c4888ce7ffd621f430abb21262a71008de3ba254bc0e8a3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-03-21T20:21:13Z","title_canon_sha256":"7eed466d10eaea1d47e293be566a3f2ec4a0ee3ef7cad23b720ffdb5ec522320"},"schema_version":"1.0","source":{"id":"astro-ph/0703571","kind":"arxiv","version":1}},"canonical_sha256":"b59560dbba9de42531fc07659716b905cfc3a66824e566272281070e8e41ba69","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b59560dbba9de42531fc07659716b905cfc3a66824e566272281070e8e41ba69","first_computed_at":"2026-07-04T15:00:20.289537Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:00:20.289537Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bCj7EXW6XUNoSSvb3pBftolzjSC3E3b8RlwCXFtUagUfKGBVjP7EWgTzaJzJOTKPvxJh4Gs2hxg/Rx/KHxNXDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:00:20.290004Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0703571","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:678b8258dd8c589c7ee84fd3ee993dc7121f10d77eb2380fa147c0a096907d51","sha256:9997ae2f5e4742b38793606cbdd075d409fbd073c5eeabd24130d0fcc2b1dc99"],"state_sha256":"e57db613e32fa6862c2ced25ec8243dd8eafb09fc3aee2829b095907ebfdbd72"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gtbi/E5fhw+5AfTPw820AS9TYqvUldQrZY4jrGyFcFMP3uAZL5MXUTV7Lbhl/x/TE3W5oprw7ExSw5jUCGVdCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T03:40:53.250778Z","bundle_sha256":"78a20de9ac9c6f5a0f4a50531347749e4f3420bce986d10f1b17f3e622af6979"}}