{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:F7NKXZYTAVT3FFK7I7J7X5LF7H","short_pith_number":"pith:F7NKXZYT","canonical_record":{"source":{"id":"gr-qc/0305086","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2003-05-22T14:47:16Z","cross_cats_sorted":[],"title_canon_sha256":"5d18637b6319a663da7e555cb298aa59af66fcd7f9dca8e79fcba8196017f73b","abstract_canon_sha256":"c546f310685837f85dec296ef6eaa3c61ba5e57a1da8103f1ff5f258f4c452bd"},"schema_version":"1.0"},"canonical_sha256":"2fdaabe7130567b2955f47d3fbf565f9de3c5aeddb0d3c5bd0deda10039ac0ab","source":{"kind":"arxiv","id":"gr-qc/0305086","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/0305086","created_at":"2026-05-18T02:37:30Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0305086v1","created_at":"2026-05-18T02:37:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0305086","created_at":"2026-05-18T02:37:30Z"},{"alias_kind":"pith_short_12","alias_value":"F7NKXZYTAVT3","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"F7NKXZYTAVT3FFK7","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"F7NKXZYT","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:F7NKXZYTAVT3FFK7I7J7X5LF7H","target":"record","payload":{"canonical_record":{"source":{"id":"gr-qc/0305086","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2003-05-22T14:47:16Z","cross_cats_sorted":[],"title_canon_sha256":"5d18637b6319a663da7e555cb298aa59af66fcd7f9dca8e79fcba8196017f73b","abstract_canon_sha256":"c546f310685837f85dec296ef6eaa3c61ba5e57a1da8103f1ff5f258f4c452bd"},"schema_version":"1.0"},"canonical_sha256":"2fdaabe7130567b2955f47d3fbf565f9de3c5aeddb0d3c5bd0deda10039ac0ab","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:37:30.446595Z","signature_b64":"g4JsLViIflE38hFtLVEy9e/ILENRtB7rj86Z2d2fduFUoxgni1EI42h8iV6pQM73HLmT8r8NoLk+JuE1jlEmAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2fdaabe7130567b2955f47d3fbf565f9de3c5aeddb0d3c5bd0deda10039ac0ab","last_reissued_at":"2026-05-18T02:37:30.445915Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:37:30.445915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"gr-qc/0305086","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":"2026-05-18T02:37:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NfSrR7TlHCR7/5+JR4eE7P/17sw9E8N3m1QkxPP/bmPjVVgl8xsRhfF0fFh9+z5xXP9HSXpOGvuqHAjRUvx3AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T12:57:33.076254Z"},"content_sha256":"4c45c052dfb56f854c97cf4c90ba7fecf89eac34d42f393e7d1f267e880c3490","schema_version":"1.0","event_id":"sha256:4c45c052dfb56f854c97cf4c90ba7fecf89eac34d42f393e7d1f267e880c3490"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:F7NKXZYTAVT3FFK7I7J7X5LF7H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Generalized Chaplygin Gas Model: Dark Energy - Dark Matter Unification and CMBR Constraints","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"A.A. Sen, M.C. Bento, O. Bertolami","submitted_at":"2003-05-22T14:47:16Z","abstract_excerpt":"The generalized Chaplygin gas (GCG) model allows for an unified description of the recent accelerated expansion of the Universe and the evolution of energy density perturbations. This dark energy - dark matter unification is achieved through an exotic background fluid whose equation of state is given by $p = - A/\\rho^{\\alpha}$, where $A$ is a positive constant and $0 < \\alpha \\le 1$. Stringent constraints on the model parameters can be obtained from recent WMAP and BOOMERanG bounds on the locations of the first few peaks and troughs of the Cosmic Microwave Background Radiation (CMBR) power spe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0305086","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":"2026-05-18T02:37:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kfmqbQFaMMMejt5x1lbMglnRrcWRYqJ9fpiUAZJod/3XfxMsQdgYoOqamxR59AuIjehUDqmACqbi0CdwPsA9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T12:57:33.076702Z"},"content_sha256":"14815d9fd6d2a491d2a49c2b9f886cf9d97ee9120551095096c26a35856b4e5a","schema_version":"1.0","event_id":"sha256:14815d9fd6d2a491d2a49c2b9f886cf9d97ee9120551095096c26a35856b4e5a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F7NKXZYTAVT3FFK7I7J7X5LF7H/bundle.json","state_url":"https://pith.science/pith/F7NKXZYTAVT3FFK7I7J7X5LF7H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F7NKXZYTAVT3FFK7I7J7X5LF7H/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":"2026-08-08T12:57:33Z","links":{"resolver":"https://pith.science/pith/F7NKXZYTAVT3FFK7I7J7X5LF7H","bundle":"https://pith.science/pith/F7NKXZYTAVT3FFK7I7J7X5LF7H/bundle.json","state":"https://pith.science/pith/F7NKXZYTAVT3FFK7I7J7X5LF7H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F7NKXZYTAVT3FFK7I7J7X5LF7H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:F7NKXZYTAVT3FFK7I7J7X5LF7H","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":"c546f310685837f85dec296ef6eaa3c61ba5e57a1da8103f1ff5f258f4c452bd","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"2003-05-22T14:47:16Z","title_canon_sha256":"5d18637b6319a663da7e555cb298aa59af66fcd7f9dca8e79fcba8196017f73b"},"schema_version":"1.0","source":{"id":"gr-qc/0305086","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/0305086","created_at":"2026-05-18T02:37:30Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0305086v1","created_at":"2026-05-18T02:37:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0305086","created_at":"2026-05-18T02:37:30Z"},{"alias_kind":"pith_short_12","alias_value":"F7NKXZYTAVT3","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"F7NKXZYTAVT3FFK7","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"F7NKXZYT","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:14815d9fd6d2a491d2a49c2b9f886cf9d97ee9120551095096c26a35856b4e5a","target":"graph","created_at":"2026-05-18T02:37:30Z","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 generalized Chaplygin gas (GCG) model allows for an unified description of the recent accelerated expansion of the Universe and the evolution of energy density perturbations. This dark energy - dark matter unification is achieved through an exotic background fluid whose equation of state is given by $p = - A/\\rho^{\\alpha}$, where $A$ is a positive constant and $0 < \\alpha \\le 1$. Stringent constraints on the model parameters can be obtained from recent WMAP and BOOMERanG bounds on the locations of the first few peaks and troughs of the Cosmic Microwave Background Radiation (CMBR) power spe","authors_text":"A.A. Sen, M.C. Bento, O. Bertolami","cross_cats":[],"headline":"","license":"","primary_cat":"gr-qc","submitted_at":"2003-05-22T14:47:16Z","title":"Generalized Chaplygin Gas Model: Dark Energy - Dark Matter Unification and CMBR Constraints"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0305086","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":"sha256:4c45c052dfb56f854c97cf4c90ba7fecf89eac34d42f393e7d1f267e880c3490","target":"record","created_at":"2026-05-18T02:37:30Z","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":"c546f310685837f85dec296ef6eaa3c61ba5e57a1da8103f1ff5f258f4c452bd","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"2003-05-22T14:47:16Z","title_canon_sha256":"5d18637b6319a663da7e555cb298aa59af66fcd7f9dca8e79fcba8196017f73b"},"schema_version":"1.0","source":{"id":"gr-qc/0305086","kind":"arxiv","version":1}},"canonical_sha256":"2fdaabe7130567b2955f47d3fbf565f9de3c5aeddb0d3c5bd0deda10039ac0ab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2fdaabe7130567b2955f47d3fbf565f9de3c5aeddb0d3c5bd0deda10039ac0ab","first_computed_at":"2026-05-18T02:37:30.445915Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:37:30.445915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"g4JsLViIflE38hFtLVEy9e/ILENRtB7rj86Z2d2fduFUoxgni1EI42h8iV6pQM73HLmT8r8NoLk+JuE1jlEmAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:37:30.446595Z","signed_message":"canonical_sha256_bytes"},"source_id":"gr-qc/0305086","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c45c052dfb56f854c97cf4c90ba7fecf89eac34d42f393e7d1f267e880c3490","sha256:14815d9fd6d2a491d2a49c2b9f886cf9d97ee9120551095096c26a35856b4e5a"],"state_sha256":"76b757e1eba380c9e917b8252d53dc1a4e69f345797aee3ee677ffd8a63ee77a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dh1cVqYqL2zu/lLXQUFE1ge6k31bHIE08oBP8Bx8sWclOL/Hxhkw9Gr0KOsQUWKsLUskx5+05idCGOXAKbbhBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T12:57:33.081797Z","bundle_sha256":"caf2c24db8a8f7dff2ddd28e831c12621396d133b7c9df87f80f93a30aefd27c"}}