{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:Z4WBIPYCDZGJJX3KHK6OTVNHOB","short_pith_number":"pith:Z4WBIPYC","canonical_record":{"source":{"id":"0812.1589","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-08T23:03:05Z","cross_cats_sorted":[],"title_canon_sha256":"596dc08fca9519d1ac904ccb04351b417d572dab2a714a3731d4c30129180944","abstract_canon_sha256":"1f45d530604587a7ae3dd796c62192f6662ca23fae2223e8af45624f0e35789a"},"schema_version":"1.0"},"canonical_sha256":"cf2c143f021e4c94df6a3abce9d5a770711e530ebd0086499969c599f8aeadc7","source":{"kind":"arxiv","id":"0812.1589","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.1589","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"arxiv_version","alias_value":"0812.1589v1","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.1589","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"pith_short_12","alias_value":"Z4WBIPYCDZGJ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"Z4WBIPYCDZGJJX3K","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"Z4WBIPYC","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:Z4WBIPYCDZGJJX3KHK6OTVNHOB","target":"record","payload":{"canonical_record":{"source":{"id":"0812.1589","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-08T23:03:05Z","cross_cats_sorted":[],"title_canon_sha256":"596dc08fca9519d1ac904ccb04351b417d572dab2a714a3731d4c30129180944","abstract_canon_sha256":"1f45d530604587a7ae3dd796c62192f6662ca23fae2223e8af45624f0e35789a"},"schema_version":"1.0"},"canonical_sha256":"cf2c143f021e4c94df6a3abce9d5a770711e530ebd0086499969c599f8aeadc7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:13.529255Z","signature_b64":"UnaVgpNP9O3Wyl+M9rwSvgKpxjQe1yw6pojiC/7yJYNGufcBCXAeerJ0tBT7n5osLM73uDLxLCXkcjfLiqjnAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf2c143f021e4c94df6a3abce9d5a770711e530ebd0086499969c599f8aeadc7","last_reissued_at":"2026-05-18T02:35:13.528845Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:13.528845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0812.1589","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":"2026-05-18T02:35:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dsft6n79MFIoCtonjCoV4uXng8ofD7BJmH7ePEhZwSzxW0tZd5/wvin7hcJisAxbovv8jEj7No70txsazHooCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T02:53:47.127783Z"},"content_sha256":"377fb930859704a8b1b4d0c612d340be2f2243e7ade90475d99bedd6a525d4f5","schema_version":"1.0","event_id":"sha256:377fb930859704a8b1b4d0c612d340be2f2243e7ade90475d99bedd6a525d4f5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:Z4WBIPYCDZGJJX3KHK6OTVNHOB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Young, Massive, Star Cluster Sandage-96 After the Explosion of SN 2004dj in NGC 2403","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.V.Filippenko, B.Csak, B.E.K.Sugerman, Gy.M.Szabo, J.Vinko, K.Misselt, K.Sarneczky, L.L.Kiss, M.Kun, P.J. Brown, P.Klagyivik, R.J.Foley, S.Immler, Sz.Csizmadia, Z.Balog","submitted_at":"2008-12-08T23:03:05Z","abstract_excerpt":"The bright Type II-plateau supernova (SN) 2004dj occurred within the young, massive stellar cluster Sandage-96 in a spiral arm of NGC 2403. New multi-wavelength observations obtained with several ground-based and space-based telescopes are combined to study the radiation from Sandage-96 after SN 2004dj faded away. Sandage-96 started to dominate the flux in the optical bands starting September 2006 (~800 d after explosion). The optical fluxes are equal to the pre-explosion ones within the observational uncertainties. An optical Keck spectrum obtained ~900 d after explosion shows the dominant bl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.1589","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":"2026-05-18T02:35:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SXl6juJ06BZvzk2i7XKTxrkDw2F2oq35A8S6jcdP9faUt8i9vYiBOinBJMCRk24R+hu/QlsT+coS91qRX4mlBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T02:53:47.128124Z"},"content_sha256":"1c587f14e2346fca5934c8cf1fa5bfa5348c48ac623c21e5a5d5fe5554085ff4","schema_version":"1.0","event_id":"sha256:1c587f14e2346fca5934c8cf1fa5bfa5348c48ac623c21e5a5d5fe5554085ff4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z4WBIPYCDZGJJX3KHK6OTVNHOB/bundle.json","state_url":"https://pith.science/pith/Z4WBIPYCDZGJJX3KHK6OTVNHOB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z4WBIPYCDZGJJX3KHK6OTVNHOB/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":"2026-06-04T02:53:47Z","links":{"resolver":"https://pith.science/pith/Z4WBIPYCDZGJJX3KHK6OTVNHOB","bundle":"https://pith.science/pith/Z4WBIPYCDZGJJX3KHK6OTVNHOB/bundle.json","state":"https://pith.science/pith/Z4WBIPYCDZGJJX3KHK6OTVNHOB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z4WBIPYCDZGJJX3KHK6OTVNHOB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:Z4WBIPYCDZGJJX3KHK6OTVNHOB","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":"1f45d530604587a7ae3dd796c62192f6662ca23fae2223e8af45624f0e35789a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-08T23:03:05Z","title_canon_sha256":"596dc08fca9519d1ac904ccb04351b417d572dab2a714a3731d4c30129180944"},"schema_version":"1.0","source":{"id":"0812.1589","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.1589","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"arxiv_version","alias_value":"0812.1589v1","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.1589","created_at":"2026-05-18T02:35:13Z"},{"alias_kind":"pith_short_12","alias_value":"Z4WBIPYCDZGJ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"Z4WBIPYCDZGJJX3K","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"Z4WBIPYC","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:1c587f14e2346fca5934c8cf1fa5bfa5348c48ac623c21e5a5d5fe5554085ff4","target":"graph","created_at":"2026-05-18T02:35:13Z","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 bright Type II-plateau supernova (SN) 2004dj occurred within the young, massive stellar cluster Sandage-96 in a spiral arm of NGC 2403. New multi-wavelength observations obtained with several ground-based and space-based telescopes are combined to study the radiation from Sandage-96 after SN 2004dj faded away. Sandage-96 started to dominate the flux in the optical bands starting September 2006 (~800 d after explosion). The optical fluxes are equal to the pre-explosion ones within the observational uncertainties. An optical Keck spectrum obtained ~900 d after explosion shows the dominant bl","authors_text":"A.V.Filippenko, B.Csak, B.E.K.Sugerman, Gy.M.Szabo, J.Vinko, K.Misselt, K.Sarneczky, L.L.Kiss, M.Kun, P.J. Brown, P.Klagyivik, R.J.Foley, S.Immler, Sz.Csizmadia, Z.Balog","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-08T23:03:05Z","title":"The Young, Massive, Star Cluster Sandage-96 After the Explosion of SN 2004dj in NGC 2403"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.1589","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":"sha256:377fb930859704a8b1b4d0c612d340be2f2243e7ade90475d99bedd6a525d4f5","target":"record","created_at":"2026-05-18T02:35:13Z","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":"1f45d530604587a7ae3dd796c62192f6662ca23fae2223e8af45624f0e35789a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-12-08T23:03:05Z","title_canon_sha256":"596dc08fca9519d1ac904ccb04351b417d572dab2a714a3731d4c30129180944"},"schema_version":"1.0","source":{"id":"0812.1589","kind":"arxiv","version":1}},"canonical_sha256":"cf2c143f021e4c94df6a3abce9d5a770711e530ebd0086499969c599f8aeadc7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf2c143f021e4c94df6a3abce9d5a770711e530ebd0086499969c599f8aeadc7","first_computed_at":"2026-05-18T02:35:13.528845Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:35:13.528845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UnaVgpNP9O3Wyl+M9rwSvgKpxjQe1yw6pojiC/7yJYNGufcBCXAeerJ0tBT7n5osLM73uDLxLCXkcjfLiqjnAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:35:13.529255Z","signed_message":"canonical_sha256_bytes"},"source_id":"0812.1589","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:377fb930859704a8b1b4d0c612d340be2f2243e7ade90475d99bedd6a525d4f5","sha256:1c587f14e2346fca5934c8cf1fa5bfa5348c48ac623c21e5a5d5fe5554085ff4"],"state_sha256":"a131f81c3dfd90f71c46f1a057bf389976b29d68218f85172d353241aad36109"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eofmFn6lrJcaRDm1RaCD+bdWAocr7EgiG9RBmIoEQFastt5li/96u5XbiLo8B7ERYMfzy/u79e9gRaUADIL/BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T02:53:47.130075Z","bundle_sha256":"6c4115d9ac1770e63196e27b37857a0e98268f1c7bdb8d1e618e902da0c7cde5"}}