{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:2F3QQLQZU53IGALQYSKLQ2AQCW","short_pith_number":"pith:2F3QQLQZ","canonical_record":{"source":{"id":"astro-ph/0404393","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-04-20T19:35:12Z","cross_cats_sorted":[],"title_canon_sha256":"1854431b725ba28f65bfe81f844ee6ab472a95dfb1a26b817c9e443493832443","abstract_canon_sha256":"b6fff08993ab7ba4c6322f111c6ac6dbcfa1ae3308cf1315aaf30e54d6bc5c77"},"schema_version":"1.0"},"canonical_sha256":"d177082e19a776830170c494b8681015b13f81615bb394092ac4b6bdd020a447","source":{"kind":"arxiv","id":"astro-ph/0404393","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0404393","created_at":"2026-05-18T01:22:03Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0404393v1","created_at":"2026-05-18T01:22:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0404393","created_at":"2026-05-18T01:22:03Z"},{"alias_kind":"pith_short_12","alias_value":"2F3QQLQZU53I","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"2F3QQLQZU53IGALQ","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"2F3QQLQZ","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:2F3QQLQZU53IGALQYSKLQ2AQCW","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0404393","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-04-20T19:35:12Z","cross_cats_sorted":[],"title_canon_sha256":"1854431b725ba28f65bfe81f844ee6ab472a95dfb1a26b817c9e443493832443","abstract_canon_sha256":"b6fff08993ab7ba4c6322f111c6ac6dbcfa1ae3308cf1315aaf30e54d6bc5c77"},"schema_version":"1.0"},"canonical_sha256":"d177082e19a776830170c494b8681015b13f81615bb394092ac4b6bdd020a447","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:03.759439Z","signature_b64":"N0c2N2Qvw8OZSP7xdrM/TQIZlmllUDz/stI7AFckutomFLT/VnVdMnSGhMmPF7XfMIb2j5HvRIMGBUY5I9jRDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d177082e19a776830170c494b8681015b13f81615bb394092ac4b6bdd020a447","last_reissued_at":"2026-05-18T01:22:03.758790Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:03.758790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0404393","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":"2026-05-18T01:22:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HMaNePhBAqcSeJFIqXculaWCZ7n/wUvFb5vfhifzAY6ygHLYUZz6vnpUcWxn5nAk9+IdAL47Ukf10OMnx9PWDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T03:47:16.372665Z"},"content_sha256":"dd7ef81ffb5ac7a0cf662c73cba6e0c84268e0cf4519856716556fe84bc02163","schema_version":"1.0","event_id":"sha256:dd7ef81ffb5ac7a0cf662c73cba6e0c84268e0cf4519856716556fe84bc02163"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:2F3QQLQZU53IGALQYSKLQ2AQCW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectroscopic Observations and Analysis of the Peculiar SN 1999aa","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Amadon, A. Conley, A. G. Kim, A. Goobar, A. L. Spadafora, A. Mourao, B. C. Lee, B. E. Schaefer, B. Frye, B. Goldman, C. Balland, C. Lidman, D. A. Howell, D. E. Groom, D. Hardin, D. Kasen, E. L. Gates, E. Smith, G. Aldering, G. Blanc, G. Folatelli, G. Garavini, G. Goldhaber, G. J. Miller, G. Sainton, G. T. Richards, H. Newberg, I. M. Hook, J. Haissinski, J. Mendez, J. Raux, J. Rich, K. Schahmaneche, L. Wang, M. Moniez, M. S. Burns, N. A. Walton, N. Regnault, O. Perdereau, P. Astier, P. E. Nugent, P. Ruiz-Lapuente, R. A. Knop, R. Amanullah, R. Ellis, R. Gibbons, R. Pain, R. Quimby, S. E. Deustua, S. Fabbro, S. Kent, S. Nobili, S. Perlmutter, T. Dahlen, V. Prasad, V. Stanishev, W. M. Wood-Vasey (The Supernova Cosmology Project), X. Fan","submitted_at":"2004-04-20T19:35:12Z","abstract_excerpt":"We present an extensive new time-series of spectroscopic data of the peculiar SN 1999aa in NGC 2595. Our data set includes 25 optical spectra between -11 and +58 days with respect to B-band maximum light, providing an unusually complete time history. The early spectra resemble those of a SN 1991T-like object but with a relatively strong Ca H&K absorption feature. The first clear sign of Si II 6355, characteristic of Type Ia supernovae, is found at day -7 and its velocity remains constant up to at least the first month after B-band maximum light. The transition to normal-looking spectra is foun"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0404393","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":"2026-05-18T01:22:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n1sz6kSpNeRmcR7AlJ8UeoJJFeXelBqJWo+k/GSCXvMpA+gSI3SRtfhbOBFu95z1384HlU5u/WZlhOZYRiw/BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T03:47:16.373460Z"},"content_sha256":"aae6858621b0c1be0a437cf3272575eb748977f0552af24adcd845e7c505a58f","schema_version":"1.0","event_id":"sha256:aae6858621b0c1be0a437cf3272575eb748977f0552af24adcd845e7c505a58f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2F3QQLQZU53IGALQYSKLQ2AQCW/bundle.json","state_url":"https://pith.science/pith/2F3QQLQZU53IGALQYSKLQ2AQCW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2F3QQLQZU53IGALQYSKLQ2AQCW/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":"2026-05-20T03:47:16Z","links":{"resolver":"https://pith.science/pith/2F3QQLQZU53IGALQYSKLQ2AQCW","bundle":"https://pith.science/pith/2F3QQLQZU53IGALQYSKLQ2AQCW/bundle.json","state":"https://pith.science/pith/2F3QQLQZU53IGALQYSKLQ2AQCW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2F3QQLQZU53IGALQYSKLQ2AQCW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:2F3QQLQZU53IGALQYSKLQ2AQCW","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":"b6fff08993ab7ba4c6322f111c6ac6dbcfa1ae3308cf1315aaf30e54d6bc5c77","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-04-20T19:35:12Z","title_canon_sha256":"1854431b725ba28f65bfe81f844ee6ab472a95dfb1a26b817c9e443493832443"},"schema_version":"1.0","source":{"id":"astro-ph/0404393","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0404393","created_at":"2026-05-18T01:22:03Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0404393v1","created_at":"2026-05-18T01:22:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0404393","created_at":"2026-05-18T01:22:03Z"},{"alias_kind":"pith_short_12","alias_value":"2F3QQLQZU53I","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"2F3QQLQZU53IGALQ","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"2F3QQLQZ","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:aae6858621b0c1be0a437cf3272575eb748977f0552af24adcd845e7c505a58f","target":"graph","created_at":"2026-05-18T01:22:03Z","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":"We present an extensive new time-series of spectroscopic data of the peculiar SN 1999aa in NGC 2595. Our data set includes 25 optical spectra between -11 and +58 days with respect to B-band maximum light, providing an unusually complete time history. The early spectra resemble those of a SN 1991T-like object but with a relatively strong Ca H&K absorption feature. The first clear sign of Si II 6355, characteristic of Type Ia supernovae, is found at day -7 and its velocity remains constant up to at least the first month after B-band maximum light. The transition to normal-looking spectra is foun","authors_text":"A. Amadon, A. Conley, A. G. Kim, A. Goobar, A. L. Spadafora, A. Mourao, B. C. Lee, B. E. Schaefer, B. Frye, B. Goldman, C. Balland, C. Lidman, D. A. Howell, D. E. Groom, D. Hardin, D. Kasen, E. L. Gates, E. Smith, G. Aldering, G. Blanc, G. Folatelli, G. Garavini, G. Goldhaber, G. J. Miller, G. Sainton, G. T. Richards, H. Newberg, I. M. Hook, J. Haissinski, J. Mendez, J. Raux, J. Rich, K. Schahmaneche, L. Wang, M. Moniez, M. S. Burns, N. A. Walton, N. Regnault, O. Perdereau, P. Astier, P. E. Nugent, P. Ruiz-Lapuente, R. A. Knop, R. Amanullah, R. Ellis, R. Gibbons, R. Pain, R. Quimby, S. E. Deustua, S. Fabbro, S. Kent, S. Nobili, S. Perlmutter, T. Dahlen, V. Prasad, V. Stanishev, W. M. Wood-Vasey (The Supernova Cosmology Project), X. Fan","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-04-20T19:35:12Z","title":"Spectroscopic Observations and Analysis of the Peculiar SN 1999aa"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0404393","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:dd7ef81ffb5ac7a0cf662c73cba6e0c84268e0cf4519856716556fe84bc02163","target":"record","created_at":"2026-05-18T01:22:03Z","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":"b6fff08993ab7ba4c6322f111c6ac6dbcfa1ae3308cf1315aaf30e54d6bc5c77","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-04-20T19:35:12Z","title_canon_sha256":"1854431b725ba28f65bfe81f844ee6ab472a95dfb1a26b817c9e443493832443"},"schema_version":"1.0","source":{"id":"astro-ph/0404393","kind":"arxiv","version":1}},"canonical_sha256":"d177082e19a776830170c494b8681015b13f81615bb394092ac4b6bdd020a447","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d177082e19a776830170c494b8681015b13f81615bb394092ac4b6bdd020a447","first_computed_at":"2026-05-18T01:22:03.758790Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:03.758790Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N0c2N2Qvw8OZSP7xdrM/TQIZlmllUDz/stI7AFckutomFLT/VnVdMnSGhMmPF7XfMIb2j5HvRIMGBUY5I9jRDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:03.759439Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0404393","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd7ef81ffb5ac7a0cf662c73cba6e0c84268e0cf4519856716556fe84bc02163","sha256:aae6858621b0c1be0a437cf3272575eb748977f0552af24adcd845e7c505a58f"],"state_sha256":"850184bb5e71ea1cb94709248497021d39855c48b8b7a8bbec4829e1dfe58a2b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zmr88+Bh3spF0BF29uTfASaVxRGiJzEjpwkcrsQdntua3fNVTSBho6VDkT5AMkAF73FI9IeF494XveNN8SjsBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T03:47:16.377090Z","bundle_sha256":"1c88c36f6367f76ee52ac4539ce5ec60dd2004767c193e0000ffeaba2a3762c3"}}