{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:6RKC2QEMGVSVUIGEFH7XH2SIYC","short_pith_number":"pith:6RKC2QEM","canonical_record":{"source":{"id":"astro-ph/0605701","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-05-29T15:55:10Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"b3a8fb6bec871e09e964c4ef727f64379acb0a79f2ddc3b1c232e3cb89fefc4d","abstract_canon_sha256":"1a486ffd17fd7795d004df09a09cfe2143456b022f53e5b9347ac92b55aeeb28"},"schema_version":"1.0"},"canonical_sha256":"f4542d408c35655a20c429ff73ea48c08ab66edc681e259bb1f9a5d1b9fd40cd","source":{"kind":"arxiv","id":"astro-ph/0605701","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0605701","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0605701v2","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0605701","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"pith_short_12","alias_value":"6RKC2QEMGVSV","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"6RKC2QEMGVSVUIGE","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"6RKC2QEM","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:6RKC2QEMGVSVUIGEFH7XH2SIYC","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0605701","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-05-29T15:55:10Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"b3a8fb6bec871e09e964c4ef727f64379acb0a79f2ddc3b1c232e3cb89fefc4d","abstract_canon_sha256":"1a486ffd17fd7795d004df09a09cfe2143456b022f53e5b9347ac92b55aeeb28"},"schema_version":"1.0"},"canonical_sha256":"f4542d408c35655a20c429ff73ea48c08ab66edc681e259bb1f9a5d1b9fd40cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:40:25.304052Z","signature_b64":"f3j1pZWmnaUhdnwomQYIw8D+gV7y7xauFVy8m/mvbNha82lzviNX9My2NaIs7IaARp6FAsGQskY35PiIURByBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f4542d408c35655a20c429ff73ea48c08ab66edc681e259bb1f9a5d1b9fd40cd","last_reissued_at":"2026-05-18T02:40:25.303613Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:40:25.303613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0605701","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":"2026-05-18T02:40:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fNIGE3Yuz4MVh2T81w4qKTagXcAbwFZcN0lvzGrTWf7gLajgdnH9AQXp4qZ+iePOByJ32UcUfea4pjtAojnVBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T16:53:52.085404Z"},"content_sha256":"6f8b895d8eff3369eb687a6329317ee42b369bedadf333bab38df701fef5fa72","schema_version":"1.0","event_id":"sha256:6f8b895d8eff3369eb687a6329317ee42b369bedadf333bab38df701fef5fa72"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:6RKC2QEMGVSVUIGEFH7XH2SIYC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observational constraints on phantom-like braneworld cosmologies","license":"","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"astro-ph","authors_text":"Elisabetta Majerotto, Roy Maartens, Ruth Lazkoz","submitted_at":"2006-05-29T15:55:10Z","abstract_excerpt":"We investigate a simple braneworld model in which the universe contains only cold dark matter and a cosmological constant, but the effective dark energy is phantom-like because of extra-dimensional gravity effects. Modified gravity screens the cosmological constant Lambda, allowing for a larger Lambda. In practice, observations do not favour any significant screening. We use supernova data, the cosmic microwave background shift parameter, and the baryon oscillation peak in the galaxy distribution to constrain the model. We find the mean value of Omega_m with 68% confidence limits, and an upper"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0605701","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":""},"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":"2026-05-18T02:40:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QhuliKlkWp4uF0OFScUhLVzt10uwNMMao965HHiKA15dPEO1vt8N4AbYe0OxHSyXluUNaYBtoCDJUZIb8ZY8DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T16:53:52.085775Z"},"content_sha256":"6d4cfad46400613c45e4cdb988b854841bf35d2a375051fb4d40b1cb03de4c3b","schema_version":"1.0","event_id":"sha256:6d4cfad46400613c45e4cdb988b854841bf35d2a375051fb4d40b1cb03de4c3b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6RKC2QEMGVSVUIGEFH7XH2SIYC/bundle.json","state_url":"https://pith.science/pith/6RKC2QEMGVSVUIGEFH7XH2SIYC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6RKC2QEMGVSVUIGEFH7XH2SIYC/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":"2026-05-21T16:53:52Z","links":{"resolver":"https://pith.science/pith/6RKC2QEMGVSVUIGEFH7XH2SIYC","bundle":"https://pith.science/pith/6RKC2QEMGVSVUIGEFH7XH2SIYC/bundle.json","state":"https://pith.science/pith/6RKC2QEMGVSVUIGEFH7XH2SIYC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6RKC2QEMGVSVUIGEFH7XH2SIYC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:6RKC2QEMGVSVUIGEFH7XH2SIYC","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":"1a486ffd17fd7795d004df09a09cfe2143456b022f53e5b9347ac92b55aeeb28","cross_cats_sorted":["gr-qc","hep-th"],"license":"","primary_cat":"astro-ph","submitted_at":"2006-05-29T15:55:10Z","title_canon_sha256":"b3a8fb6bec871e09e964c4ef727f64379acb0a79f2ddc3b1c232e3cb89fefc4d"},"schema_version":"1.0","source":{"id":"astro-ph/0605701","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0605701","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0605701v2","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0605701","created_at":"2026-05-18T02:40:25Z"},{"alias_kind":"pith_short_12","alias_value":"6RKC2QEMGVSV","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"6RKC2QEMGVSVUIGE","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"6RKC2QEM","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:6d4cfad46400613c45e4cdb988b854841bf35d2a375051fb4d40b1cb03de4c3b","target":"graph","created_at":"2026-05-18T02:40:25Z","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":"We investigate a simple braneworld model in which the universe contains only cold dark matter and a cosmological constant, but the effective dark energy is phantom-like because of extra-dimensional gravity effects. Modified gravity screens the cosmological constant Lambda, allowing for a larger Lambda. In practice, observations do not favour any significant screening. We use supernova data, the cosmic microwave background shift parameter, and the baryon oscillation peak in the galaxy distribution to constrain the model. We find the mean value of Omega_m with 68% confidence limits, and an upper","authors_text":"Elisabetta Majerotto, Roy Maartens, Ruth Lazkoz","cross_cats":["gr-qc","hep-th"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-05-29T15:55:10Z","title":"Observational constraints on phantom-like braneworld cosmologies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0605701","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":"sha256:6f8b895d8eff3369eb687a6329317ee42b369bedadf333bab38df701fef5fa72","target":"record","created_at":"2026-05-18T02:40:25Z","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":"1a486ffd17fd7795d004df09a09cfe2143456b022f53e5b9347ac92b55aeeb28","cross_cats_sorted":["gr-qc","hep-th"],"license":"","primary_cat":"astro-ph","submitted_at":"2006-05-29T15:55:10Z","title_canon_sha256":"b3a8fb6bec871e09e964c4ef727f64379acb0a79f2ddc3b1c232e3cb89fefc4d"},"schema_version":"1.0","source":{"id":"astro-ph/0605701","kind":"arxiv","version":2}},"canonical_sha256":"f4542d408c35655a20c429ff73ea48c08ab66edc681e259bb1f9a5d1b9fd40cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f4542d408c35655a20c429ff73ea48c08ab66edc681e259bb1f9a5d1b9fd40cd","first_computed_at":"2026-05-18T02:40:25.303613Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:40:25.303613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"f3j1pZWmnaUhdnwomQYIw8D+gV7y7xauFVy8m/mvbNha82lzviNX9My2NaIs7IaARp6FAsGQskY35PiIURByBA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:40:25.304052Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0605701","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6f8b895d8eff3369eb687a6329317ee42b369bedadf333bab38df701fef5fa72","sha256:6d4cfad46400613c45e4cdb988b854841bf35d2a375051fb4d40b1cb03de4c3b"],"state_sha256":"f3f7e52c328d97a519531590585e9b4ea04658624263ac2623d6b88abc090865"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ew3HAKffskoAv9kejl8BsEhzQRXH3QAvNDfWI+1GTiEMIK4qXFqZ9kJwQZcbHLK3MrVF0AeEksjCJRRLVe5ACQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T16:53:52.087811Z","bundle_sha256":"f2da8e10134b040793d3d7e05bdb91df8174a48486a261fe7828c0d01607685d"}}