{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:ZVKQZOQ6PSNTJBLPN7RTDYOJG6","short_pith_number":"pith:ZVKQZOQ6","canonical_record":{"source":{"id":"1004.1209","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-07T23:41:15Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"9588dbfea29fbff534607d0a62193a357f0e22d89950d84a40c4083a0f623180","abstract_canon_sha256":"d90ad67b1fcde2ac6aedb9ce564bfd2b56f18a3c1b88f1dbefd2314321bd5982"},"schema_version":"1.0"},"canonical_sha256":"cd550cba1e7c9b34856f6fe331e1c937a2d965dfb40d4b6d524d1cd82148f07a","source":{"kind":"arxiv","id":"1004.1209","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.1209","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"arxiv_version","alias_value":"1004.1209v1","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.1209","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"pith_short_12","alias_value":"ZVKQZOQ6PSNT","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"ZVKQZOQ6PSNTJBLP","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"ZVKQZOQ6","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:ZVKQZOQ6PSNTJBLPN7RTDYOJG6","target":"record","payload":{"canonical_record":{"source":{"id":"1004.1209","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-07T23:41:15Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"9588dbfea29fbff534607d0a62193a357f0e22d89950d84a40c4083a0f623180","abstract_canon_sha256":"d90ad67b1fcde2ac6aedb9ce564bfd2b56f18a3c1b88f1dbefd2314321bd5982"},"schema_version":"1.0"},"canonical_sha256":"cd550cba1e7c9b34856f6fe331e1c937a2d965dfb40d4b6d524d1cd82148f07a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:08:08.147179Z","signature_b64":"qhN1LpZdIIYi6TExBCvob/ozHrHiztxCC0gukdhKV4kemiHQhVUKB+KmhDJQ4VOroKLO2gOABQAeYeTjmpArBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cd550cba1e7c9b34856f6fe331e1c937a2d965dfb40d4b6d524d1cd82148f07a","last_reissued_at":"2026-05-18T02:08:08.146574Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:08:08.146574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1004.1209","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":"2026-05-18T02:08:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P2VNZnnlaltqELaz67eZ5I+liAISdv8cvasyn0OGHAXnDfsq3ndpEbxXj6db4aKYJiDUOQYrspfo2C/cjj27Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T07:49:56.406325Z"},"content_sha256":"fa6f9e61c2f3d768ef02dce71daeeb145b768a1375d30101901143e99afd9f53","schema_version":"1.0","event_id":"sha256:fa6f9e61c2f3d768ef02dce71daeeb145b768a1375d30101901143e99afd9f53"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:ZVKQZOQ6PSNTJBLPN7RTDYOJG6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SN 2007od: A Type IIP SN with Circumstellar Interaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.SR","authors_text":"B.E.K. Sugerman, B. Ercolano, D.L. Welch, Geoffrey C. Clayton, J. Clem, J.E. Andrews, J. Fabbri, J.P. Chatelain, J.S. Gallagher, M.J. Barlow, M. Meixner, R. Wesson","submitted_at":"2010-04-07T23:41:15Z","abstract_excerpt":"SN 2007od exhibits characteristics that have rarely been seen in a Type IIP supernova (SN). Optical V band photometry reveals a very steep brightness decline between the plateau and nebular phases of ~4.5 mag, likely due to SN 2007od containing a low mass of 56Ni. The optical spectra show an evolution from normal Type IIP with broad Halpha emission, to a complex, four component Halpha emission profile exhibiting asymmetries caused by dust extinction after day 232. This is similar to the spectral evolution of the Type IIn SN 1998S, although no early-time narrow (~200 km s-1) Halpha component wa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.1209","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":"2026-05-18T02:08:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RFCP+BwWtf0P79MHDN8gYaDlg/ourn6hD+h8uQvOECKKT6xmUrwIaDKTcdtK3V2l8pGFk1CoXGmUARX5zaL5Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T07:49:56.406673Z"},"content_sha256":"f7ea19115fb0f3c8a97d65e2204a23a22a2f9c391faae540ed1e7921e51b0b82","schema_version":"1.0","event_id":"sha256:f7ea19115fb0f3c8a97d65e2204a23a22a2f9c391faae540ed1e7921e51b0b82"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZVKQZOQ6PSNTJBLPN7RTDYOJG6/bundle.json","state_url":"https://pith.science/pith/ZVKQZOQ6PSNTJBLPN7RTDYOJG6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZVKQZOQ6PSNTJBLPN7RTDYOJG6/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":"2026-06-06T07:49:56Z","links":{"resolver":"https://pith.science/pith/ZVKQZOQ6PSNTJBLPN7RTDYOJG6","bundle":"https://pith.science/pith/ZVKQZOQ6PSNTJBLPN7RTDYOJG6/bundle.json","state":"https://pith.science/pith/ZVKQZOQ6PSNTJBLPN7RTDYOJG6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZVKQZOQ6PSNTJBLPN7RTDYOJG6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:ZVKQZOQ6PSNTJBLPN7RTDYOJG6","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":"d90ad67b1fcde2ac6aedb9ce564bfd2b56f18a3c1b88f1dbefd2314321bd5982","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-07T23:41:15Z","title_canon_sha256":"9588dbfea29fbff534607d0a62193a357f0e22d89950d84a40c4083a0f623180"},"schema_version":"1.0","source":{"id":"1004.1209","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.1209","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"arxiv_version","alias_value":"1004.1209v1","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.1209","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"pith_short_12","alias_value":"ZVKQZOQ6PSNT","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"ZVKQZOQ6PSNTJBLP","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"ZVKQZOQ6","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:f7ea19115fb0f3c8a97d65e2204a23a22a2f9c391faae540ed1e7921e51b0b82","target":"graph","created_at":"2026-05-18T02:08:08Z","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":"SN 2007od exhibits characteristics that have rarely been seen in a Type IIP supernova (SN). Optical V band photometry reveals a very steep brightness decline between the plateau and nebular phases of ~4.5 mag, likely due to SN 2007od containing a low mass of 56Ni. The optical spectra show an evolution from normal Type IIP with broad Halpha emission, to a complex, four component Halpha emission profile exhibiting asymmetries caused by dust extinction after day 232. This is similar to the spectral evolution of the Type IIn SN 1998S, although no early-time narrow (~200 km s-1) Halpha component wa","authors_text":"B.E.K. Sugerman, B. Ercolano, D.L. Welch, Geoffrey C. Clayton, J. Clem, J.E. Andrews, J. Fabbri, J.P. Chatelain, J.S. Gallagher, M.J. Barlow, M. Meixner, R. Wesson","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-07T23:41:15Z","title":"SN 2007od: A Type IIP SN with Circumstellar Interaction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.1209","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:fa6f9e61c2f3d768ef02dce71daeeb145b768a1375d30101901143e99afd9f53","target":"record","created_at":"2026-05-18T02:08:08Z","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":"d90ad67b1fcde2ac6aedb9ce564bfd2b56f18a3c1b88f1dbefd2314321bd5982","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-04-07T23:41:15Z","title_canon_sha256":"9588dbfea29fbff534607d0a62193a357f0e22d89950d84a40c4083a0f623180"},"schema_version":"1.0","source":{"id":"1004.1209","kind":"arxiv","version":1}},"canonical_sha256":"cd550cba1e7c9b34856f6fe331e1c937a2d965dfb40d4b6d524d1cd82148f07a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd550cba1e7c9b34856f6fe331e1c937a2d965dfb40d4b6d524d1cd82148f07a","first_computed_at":"2026-05-18T02:08:08.146574Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:08.146574Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qhN1LpZdIIYi6TExBCvob/ozHrHiztxCC0gukdhKV4kemiHQhVUKB+KmhDJQ4VOroKLO2gOABQAeYeTjmpArBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:08.147179Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.1209","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa6f9e61c2f3d768ef02dce71daeeb145b768a1375d30101901143e99afd9f53","sha256:f7ea19115fb0f3c8a97d65e2204a23a22a2f9c391faae540ed1e7921e51b0b82"],"state_sha256":"990540b1dda8c5070c393c2df44cea2453f716135c52e94f5236c3b06a3ac511"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kmR2+KMImhWHsAIHvUd2iZ2qA8pMenwl5tucXGjChO3M/3JNdvkJOS3aYomzjuNqdSMFRMpQhn+H2ty5sdXIBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T07:49:56.408704Z","bundle_sha256":"2188dda2893dad1781d56699704cd2961ff3b8579ab0bca22e1989dd22c30628"}}