{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:ZOI5JVO24NSQAT2X7VTKJTJVBV","short_pith_number":"pith:ZOI5JVO2","canonical_record":{"source":{"id":"0902.3142","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-18T03:31:34Z","cross_cats_sorted":[],"title_canon_sha256":"d16c345587ae8b0aba924665f58cd897a931a20f1f877284233385f24fff8bf7","abstract_canon_sha256":"f59b039edea3ba28f9319c0fc72bee594d9020f4b5eb6e4555bcc3fcf41d4e29"},"schema_version":"1.0"},"canonical_sha256":"cb91d4d5dae365004f57fd66a4cd350d4a8d36bfb368a85e87b79b32ca41a7ac","source":{"kind":"arxiv","id":"0902.3142","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.3142","created_at":"2026-07-04T15:38:12Z"},{"alias_kind":"arxiv_version","alias_value":"0902.3142v1","created_at":"2026-07-04T15:38:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.3142","created_at":"2026-07-04T15:38:12Z"},{"alias_kind":"pith_short_12","alias_value":"ZOI5JVO24NSQ","created_at":"2026-07-04T15:38:12Z"},{"alias_kind":"pith_short_16","alias_value":"ZOI5JVO24NSQAT2X","created_at":"2026-07-04T15:38:12Z"},{"alias_kind":"pith_short_8","alias_value":"ZOI5JVO2","created_at":"2026-07-04T15:38:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:ZOI5JVO24NSQAT2X7VTKJTJVBV","target":"record","payload":{"canonical_record":{"source":{"id":"0902.3142","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-18T03:31:34Z","cross_cats_sorted":[],"title_canon_sha256":"d16c345587ae8b0aba924665f58cd897a931a20f1f877284233385f24fff8bf7","abstract_canon_sha256":"f59b039edea3ba28f9319c0fc72bee594d9020f4b5eb6e4555bcc3fcf41d4e29"},"schema_version":"1.0"},"canonical_sha256":"cb91d4d5dae365004f57fd66a4cd350d4a8d36bfb368a85e87b79b32ca41a7ac","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:38:12.735255Z","signature_b64":"dJnp9UcPfANDb5CKb5xP/RpRV0QhDTxGpFAGpoxiKJoUDBzBOZYD9+DNXGqY6zjcVZtSMoPmqBgP0tYcdBJQBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb91d4d5dae365004f57fd66a4cd350d4a8d36bfb368a85e87b79b32ca41a7ac","last_reissued_at":"2026-07-04T15:38:12.734824Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:38:12.734824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0902.3142","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":"2026-07-04T15:38:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hC3qzliF7UoZ0ca7DLP51qvEnb6RLNsQ9ntlc1KMTXicqo/NDr5skNQ2y7GV8rNSTP1rm9pwO9mJ325/zEcJCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T00:47:53.874434Z"},"content_sha256":"b9b1f82583aacdcfabe00a69c2dfd0303ab450aa46f06a386fc696a1492bbad7","schema_version":"1.0","event_id":"sha256:b9b1f82583aacdcfabe00a69c2dfd0303ab450aa46f06a386fc696a1492bbad7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:ZOI5JVO24NSQAT2X7VTKJTJVBV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Type II Supernovae as Probes of Cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Ariel Goobar, Avishay Gal-Yam, Christopher B. D'Andrea, Daniel N. Kasen, Douglas C. Leonard, Dovi Poznanski, Eddie Baron, Howie Marion, James D. Neill, Joshua S. Bloom, Ken'ichi Nomoto, Kevin L. Krisciunas, Luc Dessart, Malcolm Hicken, Mario Hamuy, Mario Livio, Mark Sullivan, Masao Sako, Massimo Della Valle, Massimo Turatto, Peter E. Nugent, Richard S. Ellis, Robert Quimby, Rollin C. Thomas, Schuyler D. Van Dyk, Stephane Blondin, Thomas Matheson, Weidong Li, W. Michael Wood-Vasey","submitted_at":"2009-02-18T03:31:34Z","abstract_excerpt":"- Constraining the cosmological parameters and understanding Dark Energy have tremendous implications for the nature of the Universe and its physical laws.\n  - The pervasive limit of systematic uncertainties reached by cosmography based on Cepheids and Type Ia supernovae (SNe Ia) warrants a search for complementary approaches.\n  - Type II SNe have been shown to offer such a path. Their distances can be well constrained by luminosity-based or geometric methods. Competing, complementary, and concerted efforts are underway, to explore and exploit those objects that are extremely well matched to n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.3142","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/0902.3142/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":"2026-07-04T15:38:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ilIqxpO7XQMZ0tlRBzbeAAsqNuCnyG3mQm9Skn3awtELahbcOLkL1C98eXlp8IUQ4UhBEVdsgNG3jTuLTh/SDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T00:47:53.875054Z"},"content_sha256":"fba4df004ff8bc7dfb09f19c32b102a7c226bf1448659136da79b498b5f9880b","schema_version":"1.0","event_id":"sha256:fba4df004ff8bc7dfb09f19c32b102a7c226bf1448659136da79b498b5f9880b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZOI5JVO24NSQAT2X7VTKJTJVBV/bundle.json","state_url":"https://pith.science/pith/ZOI5JVO24NSQAT2X7VTKJTJVBV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZOI5JVO24NSQAT2X7VTKJTJVBV/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":"2026-08-04T00:47:53Z","links":{"resolver":"https://pith.science/pith/ZOI5JVO24NSQAT2X7VTKJTJVBV","bundle":"https://pith.science/pith/ZOI5JVO24NSQAT2X7VTKJTJVBV/bundle.json","state":"https://pith.science/pith/ZOI5JVO24NSQAT2X7VTKJTJVBV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZOI5JVO24NSQAT2X7VTKJTJVBV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:ZOI5JVO24NSQAT2X7VTKJTJVBV","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":"f59b039edea3ba28f9319c0fc72bee594d9020f4b5eb6e4555bcc3fcf41d4e29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-18T03:31:34Z","title_canon_sha256":"d16c345587ae8b0aba924665f58cd897a931a20f1f877284233385f24fff8bf7"},"schema_version":"1.0","source":{"id":"0902.3142","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.3142","created_at":"2026-07-04T15:38:12Z"},{"alias_kind":"arxiv_version","alias_value":"0902.3142v1","created_at":"2026-07-04T15:38:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.3142","created_at":"2026-07-04T15:38:12Z"},{"alias_kind":"pith_short_12","alias_value":"ZOI5JVO24NSQ","created_at":"2026-07-04T15:38:12Z"},{"alias_kind":"pith_short_16","alias_value":"ZOI5JVO24NSQAT2X","created_at":"2026-07-04T15:38:12Z"},{"alias_kind":"pith_short_8","alias_value":"ZOI5JVO2","created_at":"2026-07-04T15:38:12Z"}],"graph_snapshots":[{"event_id":"sha256:fba4df004ff8bc7dfb09f19c32b102a7c226bf1448659136da79b498b5f9880b","target":"graph","created_at":"2026-07-04T15:38:12Z","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/0902.3142/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"- Constraining the cosmological parameters and understanding Dark Energy have tremendous implications for the nature of the Universe and its physical laws.\n  - The pervasive limit of systematic uncertainties reached by cosmography based on Cepheids and Type Ia supernovae (SNe Ia) warrants a search for complementary approaches.\n  - Type II SNe have been shown to offer such a path. Their distances can be well constrained by luminosity-based or geometric methods. Competing, complementary, and concerted efforts are underway, to explore and exploit those objects that are extremely well matched to n","authors_text":"Ariel Goobar, Avishay Gal-Yam, Christopher B. D'Andrea, Daniel N. Kasen, Douglas C. Leonard, Dovi Poznanski, Eddie Baron, Howie Marion, James D. Neill, Joshua S. Bloom, Ken'ichi Nomoto, Kevin L. Krisciunas, Luc Dessart, Malcolm Hicken, Mario Hamuy, Mario Livio, Mark Sullivan, Masao Sako, Massimo Della Valle, Massimo Turatto, Peter E. Nugent, Richard S. Ellis, Robert Quimby, Rollin C. Thomas, Schuyler D. Van Dyk, Stephane Blondin, Thomas Matheson, Weidong Li, W. Michael Wood-Vasey","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-18T03:31:34Z","title":"Type II Supernovae as Probes of Cosmology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.3142","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:b9b1f82583aacdcfabe00a69c2dfd0303ab450aa46f06a386fc696a1492bbad7","target":"record","created_at":"2026-07-04T15:38:12Z","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":"f59b039edea3ba28f9319c0fc72bee594d9020f4b5eb6e4555bcc3fcf41d4e29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-02-18T03:31:34Z","title_canon_sha256":"d16c345587ae8b0aba924665f58cd897a931a20f1f877284233385f24fff8bf7"},"schema_version":"1.0","source":{"id":"0902.3142","kind":"arxiv","version":1}},"canonical_sha256":"cb91d4d5dae365004f57fd66a4cd350d4a8d36bfb368a85e87b79b32ca41a7ac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb91d4d5dae365004f57fd66a4cd350d4a8d36bfb368a85e87b79b32ca41a7ac","first_computed_at":"2026-07-04T15:38:12.734824Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:38:12.734824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dJnp9UcPfANDb5CKb5xP/RpRV0QhDTxGpFAGpoxiKJoUDBzBOZYD9+DNXGqY6zjcVZtSMoPmqBgP0tYcdBJQBA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:38:12.735255Z","signed_message":"canonical_sha256_bytes"},"source_id":"0902.3142","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9b1f82583aacdcfabe00a69c2dfd0303ab450aa46f06a386fc696a1492bbad7","sha256:fba4df004ff8bc7dfb09f19c32b102a7c226bf1448659136da79b498b5f9880b"],"state_sha256":"9adef26a81203b5a2ff9d2ef6578a26a0cea3c51a6b717d2e777819d7b56bc4c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cEgc5hUvjZ+QNNSvgNEp2ivsb/AklFDvjpr0J2D47Z29+256t1cUwZo6xXpEWDkT9WHa3BwSK3ERS7RGD7taCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T00:47:53.899168Z","bundle_sha256":"c1cad65d8328652d4af0e4977ae86499578c557fad799f250ceab509b2a8526f"}}