{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:WGZ3SP2LOOTQZ3XPZ4BJQMGIAS","short_pith_number":"pith:WGZ3SP2L","canonical_record":{"source":{"id":"1610.05323","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-10-17T20:02:20Z","cross_cats_sorted":[],"title_canon_sha256":"1077b2246760b957a5ec5202e754716a36d26489f6e28fd538ad920c1b572ba9","abstract_canon_sha256":"13a2719e5e092d33ca9a26165cb7076176bb7f10d6ba2ad96a16c23f23e0d9ee"},"schema_version":"1.0"},"canonical_sha256":"b1b3b93f4b73a70ceeefcf029830c8049aea2dd544548f1ade7509ce39a41cd1","source":{"kind":"arxiv","id":"1610.05323","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.05323","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"arxiv_version","alias_value":"1610.05323v1","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.05323","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"pith_short_12","alias_value":"WGZ3SP2LOOTQ","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"WGZ3SP2LOOTQZ3XP","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"WGZ3SP2L","created_at":"2026-05-18T12:30:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:WGZ3SP2LOOTQZ3XPZ4BJQMGIAS","target":"record","payload":{"canonical_record":{"source":{"id":"1610.05323","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-10-17T20:02:20Z","cross_cats_sorted":[],"title_canon_sha256":"1077b2246760b957a5ec5202e754716a36d26489f6e28fd538ad920c1b572ba9","abstract_canon_sha256":"13a2719e5e092d33ca9a26165cb7076176bb7f10d6ba2ad96a16c23f23e0d9ee"},"schema_version":"1.0"},"canonical_sha256":"b1b3b93f4b73a70ceeefcf029830c8049aea2dd544548f1ade7509ce39a41cd1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:59.619163Z","signature_b64":"UZ8rF6zn6G/y81TMBp/K2cFV0Go7eaOK1NgzGNQ1ks+iZMQ0sI3Tm4L909mi6P/By4x/+uxurhbWgSy3WVciDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b1b3b93f4b73a70ceeefcf029830c8049aea2dd544548f1ade7509ce39a41cd1","last_reissued_at":"2026-05-18T01:01:59.618686Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:59.618686Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1610.05323","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":"2026-05-18T01:01:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lOC8rJ4QfcRVhbx0RKaKXv4kdEwf3Z1FnjcOgAH2y9FngX8WRjkndIZX9FB3EvGK3x2Ej7+w8rQb5JsYWo0pDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T15:56:17.349117Z"},"content_sha256":"e085703ef93bd94551868dfb3369295d61f648ace2ebe94c1dec3d2b7a113c00","schema_version":"1.0","event_id":"sha256:e085703ef93bd94551868dfb3369295d61f648ace2ebe94c1dec3d2b7a113c00"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:WGZ3SP2LOOTQZ3XPZ4BJQMGIAS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Type II supernovae Early Light Curves","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Ehud Nakar, Roni Waldman, Tomer Shussman","submitted_at":"2016-10-17T20:02:20Z","abstract_excerpt":"Observations of type II supernova early light, from breakout until recombination, can be used to constrain the explosion energy and progenitor properties. Currently available for this purpose are purely analytic models, which are accurate only to within an order of magnitude, and detailed numerical simulations, which are more accurate but are applied to any event separately. In this paper we derive an analytic model that is calibrated by numerical simulations. This model is much more accurate than previous analytic models, yet it is as simple to use. To derive the model we analyze simulated li"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.05323","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":"2026-05-18T01:01:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pO9ttd7r2L7Fr+QMg6vD6NLYaYlf54YqgWFprZ/g9Fy7EbJfuhnoqJE+KS842TMNPO72inSN81MeV1tKLjriCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T15:56:17.354108Z"},"content_sha256":"3b91d366ebefc4b47ee62ef23cb8f4aa586547635d39bfebbdf98d92400c6ef5","schema_version":"1.0","event_id":"sha256:3b91d366ebefc4b47ee62ef23cb8f4aa586547635d39bfebbdf98d92400c6ef5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WGZ3SP2LOOTQZ3XPZ4BJQMGIAS/bundle.json","state_url":"https://pith.science/pith/WGZ3SP2LOOTQZ3XPZ4BJQMGIAS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WGZ3SP2LOOTQZ3XPZ4BJQMGIAS/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":"2026-08-16T15:56:17Z","links":{"resolver":"https://pith.science/pith/WGZ3SP2LOOTQZ3XPZ4BJQMGIAS","bundle":"https://pith.science/pith/WGZ3SP2LOOTQZ3XPZ4BJQMGIAS/bundle.json","state":"https://pith.science/pith/WGZ3SP2LOOTQZ3XPZ4BJQMGIAS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WGZ3SP2LOOTQZ3XPZ4BJQMGIAS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:WGZ3SP2LOOTQZ3XPZ4BJQMGIAS","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":"13a2719e5e092d33ca9a26165cb7076176bb7f10d6ba2ad96a16c23f23e0d9ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-10-17T20:02:20Z","title_canon_sha256":"1077b2246760b957a5ec5202e754716a36d26489f6e28fd538ad920c1b572ba9"},"schema_version":"1.0","source":{"id":"1610.05323","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.05323","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"arxiv_version","alias_value":"1610.05323v1","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.05323","created_at":"2026-05-18T01:01:59Z"},{"alias_kind":"pith_short_12","alias_value":"WGZ3SP2LOOTQ","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"WGZ3SP2LOOTQZ3XP","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"WGZ3SP2L","created_at":"2026-05-18T12:30:48Z"}],"graph_snapshots":[{"event_id":"sha256:3b91d366ebefc4b47ee62ef23cb8f4aa586547635d39bfebbdf98d92400c6ef5","target":"graph","created_at":"2026-05-18T01:01:59Z","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":"Observations of type II supernova early light, from breakout until recombination, can be used to constrain the explosion energy and progenitor properties. Currently available for this purpose are purely analytic models, which are accurate only to within an order of magnitude, and detailed numerical simulations, which are more accurate but are applied to any event separately. In this paper we derive an analytic model that is calibrated by numerical simulations. This model is much more accurate than previous analytic models, yet it is as simple to use. To derive the model we analyze simulated li","authors_text":"Ehud Nakar, Roni Waldman, Tomer Shussman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-10-17T20:02:20Z","title":"Type II supernovae Early Light Curves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.05323","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:e085703ef93bd94551868dfb3369295d61f648ace2ebe94c1dec3d2b7a113c00","target":"record","created_at":"2026-05-18T01:01:59Z","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":"13a2719e5e092d33ca9a26165cb7076176bb7f10d6ba2ad96a16c23f23e0d9ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-10-17T20:02:20Z","title_canon_sha256":"1077b2246760b957a5ec5202e754716a36d26489f6e28fd538ad920c1b572ba9"},"schema_version":"1.0","source":{"id":"1610.05323","kind":"arxiv","version":1}},"canonical_sha256":"b1b3b93f4b73a70ceeefcf029830c8049aea2dd544548f1ade7509ce39a41cd1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b1b3b93f4b73a70ceeefcf029830c8049aea2dd544548f1ade7509ce39a41cd1","first_computed_at":"2026-05-18T01:01:59.618686Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:59.618686Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UZ8rF6zn6G/y81TMBp/K2cFV0Go7eaOK1NgzGNQ1ks+iZMQ0sI3Tm4L909mi6P/By4x/+uxurhbWgSy3WVciDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:59.619163Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.05323","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e085703ef93bd94551868dfb3369295d61f648ace2ebe94c1dec3d2b7a113c00","sha256:3b91d366ebefc4b47ee62ef23cb8f4aa586547635d39bfebbdf98d92400c6ef5"],"state_sha256":"ad997de86e48561f9a5510d4c1ef32a3085db4cfc9bb7664be0bf71133955e32"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4KJLusPZZ/Wjg81sNj5hiQp9bIT6lTpOiSEeyCpcSjZmwzSyUM29Hpz9mBbargLKeCpCLhY6bUGUEIEoC6VVBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T15:56:17.376912Z","bundle_sha256":"dd2ecc6d6b8db89588d0c11163b4f8874497bb56b774c8ea9e0664d4833610ce"}}