{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:A3H4YN3IJN52QAY2VJTAFFUWBI","short_pith_number":"pith:A3H4YN3I","canonical_record":{"source":{"id":"astro-ph/0204008","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-31T06:48:03Z","cross_cats_sorted":[],"title_canon_sha256":"2f1db6ee020232fe5451a4757df7c6cdbb5966ce51bd0b6feef1cb2482d23d01","abstract_canon_sha256":"be1b9baebc0838df55fbbd601b3d072667c619906025cf4640cb293ff66d6886"},"schema_version":"1.0"},"canonical_sha256":"06cfcc37684b7ba8031aaa660296960a2970c8a759a59c228653a402873a33b2","source":{"kind":"arxiv","id":"astro-ph/0204008","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0204008","created_at":"2026-07-04T16:29:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0204008v1","created_at":"2026-07-04T16:29:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0204008","created_at":"2026-07-04T16:29:37Z"},{"alias_kind":"pith_short_12","alias_value":"A3H4YN3IJN52","created_at":"2026-07-04T16:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"A3H4YN3IJN52QAY2","created_at":"2026-07-04T16:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"A3H4YN3I","created_at":"2026-07-04T16:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:A3H4YN3IJN52QAY2VJTAFFUWBI","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0204008","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-31T06:48:03Z","cross_cats_sorted":[],"title_canon_sha256":"2f1db6ee020232fe5451a4757df7c6cdbb5966ce51bd0b6feef1cb2482d23d01","abstract_canon_sha256":"be1b9baebc0838df55fbbd601b3d072667c619906025cf4640cb293ff66d6886"},"schema_version":"1.0"},"canonical_sha256":"06cfcc37684b7ba8031aaa660296960a2970c8a759a59c228653a402873a33b2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:29:37.809193Z","signature_b64":"iwhox3tR3B87TbuHZQNkUQa1+hubM871lVP6qCtimKrMzh8IVpUAWwDW8BjKeK0OKlET6QcKAfN1pxeII2lXDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"06cfcc37684b7ba8031aaa660296960a2970c8a759a59c228653a402873a33b2","last_reissued_at":"2026-07-04T16:29:37.808641Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:29:37.808641Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0204008","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":"2026-07-04T16:29:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"epCybOhthxrtxg9rEhsYmyJCtqGsC+RQBdW/fhgHODvFmITHb3eiU0kgWdlrFhIFnUtRKM3YB+ESVVyYZgxRAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T09:28:08.935476Z"},"content_sha256":"b64175a4b5e9a23bd31613730150979be3e67845eb7dfe50c0e94ae4e16eb2be","schema_version":"1.0","event_id":"sha256:b64175a4b5e9a23bd31613730150979be3e67845eb7dfe50c0e94ae4e16eb2be"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:A3H4YN3IJN52QAY2VJTAFFUWBI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Supernova 2002ap - The First Month","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Avishay Gal-Yam, Eran O. Ofek, Ohad Shemmer","submitted_at":"2002-03-31T06:48:03Z","abstract_excerpt":"Supernova (SN) 2002ap in M74 was discovered on January 29, 2002. Being one of the nearest (10 Mpc) SN events in the last decades, and spectroscopically similar to the so-called ``hypernovae'' 1997ef and 1998bw, both possibly associated with gamma-ray bursts (GRBs), it is of great interest. Shortly after its discovery, we launched an intensive photometric and spectroscopic monitoring campaign of this event, and here we report the results of the first month of observations. We use our UBVRI photometry to estimate the magnitudes at, and dates of, peak brightness. Our data suggest that this object"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0204008","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/astro-ph/0204008/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":"2026-07-04T16:29:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9o9W9Z9R3j//tKy32mYwB9dZDd6mEr4NpT/UcNlphYoFUITtS7gbvg2wg+nZeqkroTGjLjnkrveOU6Mx/4gWAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T09:28:08.935842Z"},"content_sha256":"12819d63c94b16c5d32d5177b275494a82fcf63e9193f765614d0d44d18de482","schema_version":"1.0","event_id":"sha256:12819d63c94b16c5d32d5177b275494a82fcf63e9193f765614d0d44d18de482"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A3H4YN3IJN52QAY2VJTAFFUWBI/bundle.json","state_url":"https://pith.science/pith/A3H4YN3IJN52QAY2VJTAFFUWBI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A3H4YN3IJN52QAY2VJTAFFUWBI/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":"2026-07-05T09:28:08Z","links":{"resolver":"https://pith.science/pith/A3H4YN3IJN52QAY2VJTAFFUWBI","bundle":"https://pith.science/pith/A3H4YN3IJN52QAY2VJTAFFUWBI/bundle.json","state":"https://pith.science/pith/A3H4YN3IJN52QAY2VJTAFFUWBI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A3H4YN3IJN52QAY2VJTAFFUWBI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:A3H4YN3IJN52QAY2VJTAFFUWBI","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":"be1b9baebc0838df55fbbd601b3d072667c619906025cf4640cb293ff66d6886","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-31T06:48:03Z","title_canon_sha256":"2f1db6ee020232fe5451a4757df7c6cdbb5966ce51bd0b6feef1cb2482d23d01"},"schema_version":"1.0","source":{"id":"astro-ph/0204008","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0204008","created_at":"2026-07-04T16:29:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0204008v1","created_at":"2026-07-04T16:29:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0204008","created_at":"2026-07-04T16:29:37Z"},{"alias_kind":"pith_short_12","alias_value":"A3H4YN3IJN52","created_at":"2026-07-04T16:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"A3H4YN3IJN52QAY2","created_at":"2026-07-04T16:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"A3H4YN3I","created_at":"2026-07-04T16:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:12819d63c94b16c5d32d5177b275494a82fcf63e9193f765614d0d44d18de482","target":"graph","created_at":"2026-07-04T16:29:37Z","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/astro-ph/0204008/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Supernova (SN) 2002ap in M74 was discovered on January 29, 2002. Being one of the nearest (10 Mpc) SN events in the last decades, and spectroscopically similar to the so-called ``hypernovae'' 1997ef and 1998bw, both possibly associated with gamma-ray bursts (GRBs), it is of great interest. Shortly after its discovery, we launched an intensive photometric and spectroscopic monitoring campaign of this event, and here we report the results of the first month of observations. We use our UBVRI photometry to estimate the magnitudes at, and dates of, peak brightness. Our data suggest that this object","authors_text":"Avishay Gal-Yam, Eran O. Ofek, Ohad Shemmer","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-03-31T06:48:03Z","title":"Supernova 2002ap - The First Month"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0204008","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:b64175a4b5e9a23bd31613730150979be3e67845eb7dfe50c0e94ae4e16eb2be","target":"record","created_at":"2026-07-04T16:29:37Z","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":"be1b9baebc0838df55fbbd601b3d072667c619906025cf4640cb293ff66d6886","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-03-31T06:48:03Z","title_canon_sha256":"2f1db6ee020232fe5451a4757df7c6cdbb5966ce51bd0b6feef1cb2482d23d01"},"schema_version":"1.0","source":{"id":"astro-ph/0204008","kind":"arxiv","version":1}},"canonical_sha256":"06cfcc37684b7ba8031aaa660296960a2970c8a759a59c228653a402873a33b2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"06cfcc37684b7ba8031aaa660296960a2970c8a759a59c228653a402873a33b2","first_computed_at":"2026-07-04T16:29:37.808641Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:29:37.808641Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iwhox3tR3B87TbuHZQNkUQa1+hubM871lVP6qCtimKrMzh8IVpUAWwDW8BjKeK0OKlET6QcKAfN1pxeII2lXDg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:29:37.809193Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0204008","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b64175a4b5e9a23bd31613730150979be3e67845eb7dfe50c0e94ae4e16eb2be","sha256:12819d63c94b16c5d32d5177b275494a82fcf63e9193f765614d0d44d18de482"],"state_sha256":"9c52be1f7dbf13749bb9c3e44f1d69b158d4420a88125f414398e09e5b3b6609"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZkH2Zj6KOxFRj7PJrgqc85l7oTp5UTrTbAYdKEzarrwJrSqvZhYNK1jtlBBW6uh0tsf8d/ZakKA2CTcnV3/BDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T09:28:08.938002Z","bundle_sha256":"ba2e1050b997b52ced5d094da7b0a1c600bd1a8aac62aabd8cadecf5dc24d3c4"}}