{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:23MO4NFP26G7JOFLPZYTNVFMAH","short_pith_number":"pith:23MO4NFP","canonical_record":{"source":{"id":"1201.1544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-01-07T11:06:31Z","cross_cats_sorted":[],"title_canon_sha256":"84e4fb47caed930f62b17e6f969c978bc0c68d2af37e64fa421f95934ec4fb56","abstract_canon_sha256":"a5d1976dd194f16450e49f67e903f9087e00df1eb74dd5b959182b09a52a7f41"},"schema_version":"1.0"},"canonical_sha256":"d6d8ee34afd78df4b8ab7e7136d4ac01c73950119887c9759a054cb8a9cbd0f8","source":{"kind":"arxiv","id":"1201.1544","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.1544","created_at":"2026-05-18T04:05:03Z"},{"alias_kind":"arxiv_version","alias_value":"1201.1544v1","created_at":"2026-05-18T04:05:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.1544","created_at":"2026-05-18T04:05:03Z"},{"alias_kind":"pith_short_12","alias_value":"23MO4NFP26G7","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"23MO4NFP26G7JOFL","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"23MO4NFP","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:23MO4NFP26G7JOFLPZYTNVFMAH","target":"record","payload":{"canonical_record":{"source":{"id":"1201.1544","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-01-07T11:06:31Z","cross_cats_sorted":[],"title_canon_sha256":"84e4fb47caed930f62b17e6f969c978bc0c68d2af37e64fa421f95934ec4fb56","abstract_canon_sha256":"a5d1976dd194f16450e49f67e903f9087e00df1eb74dd5b959182b09a52a7f41"},"schema_version":"1.0"},"canonical_sha256":"d6d8ee34afd78df4b8ab7e7136d4ac01c73950119887c9759a054cb8a9cbd0f8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:05:03.118114Z","signature_b64":"pIUaaNnnmVxoAr0mIcdgtHHKbQYyUmzlVr3PjphDk3w2i2G51OIgip+bWmohorRRIwpm7osBVKYsnklnFpp+Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d6d8ee34afd78df4b8ab7e7136d4ac01c73950119887c9759a054cb8a9cbd0f8","last_reissued_at":"2026-05-18T04:05:03.117436Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:05:03.117436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1201.1544","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":"2026-05-18T04:05:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"18tBqY0NS6Cuyoo2N+0TAEwtwT6RWn3cfGUwppcLVuYdJB00zUtexADT1fz/5d42QS30SDfXsDqQT/EvhA9nDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T20:18:57.367379Z"},"content_sha256":"04e1b4c3103cc7acd792205e63223d6573746c0869cc9e2811607c59f7f42b28","schema_version":"1.0","event_id":"sha256:04e1b4c3103cc7acd792205e63223d6573746c0869cc9e2811607c59f7f42b28"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:23MO4NFP26G7JOFLPZYTNVFMAH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectroscopy and Multi-color Photometry of U Scorpii at the Earliest Stage of 2010 Outburst","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Kazuyoshi Imamura, Kenji Tanabe","submitted_at":"2012-01-07T11:06:31Z","abstract_excerpt":"We have performed our spectroscopic and multi-color photometric observations of the recurrent nova U Scorpii at the earliest stage of the 2010 outburst. 0.37 days after the discovery of the outburst, we can see broad and prominent emission lines of Balmer series, He I, N II, N III, O I and Mg II on the spectra. The FWHM of H$\\alpha$ line yields an expansion velocity of approximately 6200 km/s. This line also accompanies a blue shifted absorption line (so called P Cygni profile). 1.37 days after the discovery, H$\\alpha$ line shows a nearly flat-topped profile in contrast to the previous day. Fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.1544","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":"2026-05-18T04:05:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FCor057uF/KIk2t7eBRvC3pg53WTeXz4j2ZZmbkRIKmh723xIbsM/bScWIvXmPhkChv9YWhUDK9tbte15XR6CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T20:18:57.367733Z"},"content_sha256":"1c0f3a78bd48afbed0040ec328b7404bb48ada0655fe726478dbfc43b195879d","schema_version":"1.0","event_id":"sha256:1c0f3a78bd48afbed0040ec328b7404bb48ada0655fe726478dbfc43b195879d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/23MO4NFP26G7JOFLPZYTNVFMAH/bundle.json","state_url":"https://pith.science/pith/23MO4NFP26G7JOFLPZYTNVFMAH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/23MO4NFP26G7JOFLPZYTNVFMAH/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":"2026-05-27T20:18:57Z","links":{"resolver":"https://pith.science/pith/23MO4NFP26G7JOFLPZYTNVFMAH","bundle":"https://pith.science/pith/23MO4NFP26G7JOFLPZYTNVFMAH/bundle.json","state":"https://pith.science/pith/23MO4NFP26G7JOFLPZYTNVFMAH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/23MO4NFP26G7JOFLPZYTNVFMAH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:23MO4NFP26G7JOFLPZYTNVFMAH","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":"a5d1976dd194f16450e49f67e903f9087e00df1eb74dd5b959182b09a52a7f41","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-01-07T11:06:31Z","title_canon_sha256":"84e4fb47caed930f62b17e6f969c978bc0c68d2af37e64fa421f95934ec4fb56"},"schema_version":"1.0","source":{"id":"1201.1544","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.1544","created_at":"2026-05-18T04:05:03Z"},{"alias_kind":"arxiv_version","alias_value":"1201.1544v1","created_at":"2026-05-18T04:05:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.1544","created_at":"2026-05-18T04:05:03Z"},{"alias_kind":"pith_short_12","alias_value":"23MO4NFP26G7","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"23MO4NFP26G7JOFL","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"23MO4NFP","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:1c0f3a78bd48afbed0040ec328b7404bb48ada0655fe726478dbfc43b195879d","target":"graph","created_at":"2026-05-18T04:05:03Z","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 have performed our spectroscopic and multi-color photometric observations of the recurrent nova U Scorpii at the earliest stage of the 2010 outburst. 0.37 days after the discovery of the outburst, we can see broad and prominent emission lines of Balmer series, He I, N II, N III, O I and Mg II on the spectra. The FWHM of H$\\alpha$ line yields an expansion velocity of approximately 6200 km/s. This line also accompanies a blue shifted absorption line (so called P Cygni profile). 1.37 days after the discovery, H$\\alpha$ line shows a nearly flat-topped profile in contrast to the previous day. Fr","authors_text":"Kazuyoshi Imamura, Kenji Tanabe","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-01-07T11:06:31Z","title":"Spectroscopy and Multi-color Photometry of U Scorpii at the Earliest Stage of 2010 Outburst"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.1544","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":"sha256:04e1b4c3103cc7acd792205e63223d6573746c0869cc9e2811607c59f7f42b28","target":"record","created_at":"2026-05-18T04:05:03Z","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":"a5d1976dd194f16450e49f67e903f9087e00df1eb74dd5b959182b09a52a7f41","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-01-07T11:06:31Z","title_canon_sha256":"84e4fb47caed930f62b17e6f969c978bc0c68d2af37e64fa421f95934ec4fb56"},"schema_version":"1.0","source":{"id":"1201.1544","kind":"arxiv","version":1}},"canonical_sha256":"d6d8ee34afd78df4b8ab7e7136d4ac01c73950119887c9759a054cb8a9cbd0f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d6d8ee34afd78df4b8ab7e7136d4ac01c73950119887c9759a054cb8a9cbd0f8","first_computed_at":"2026-05-18T04:05:03.117436Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:05:03.117436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pIUaaNnnmVxoAr0mIcdgtHHKbQYyUmzlVr3PjphDk3w2i2G51OIgip+bWmohorRRIwpm7osBVKYsnklnFpp+Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:05:03.118114Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.1544","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04e1b4c3103cc7acd792205e63223d6573746c0869cc9e2811607c59f7f42b28","sha256:1c0f3a78bd48afbed0040ec328b7404bb48ada0655fe726478dbfc43b195879d"],"state_sha256":"5805ab048462b5debb69553094fc1f15856a48a40583c9ce30ca19e9776b2d9b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QJMao8iNiT+oMoFFWVVGsq0QZXopeGbzFzaGSXYRSRjGXVJNfb2VT9kUD+KjFktQdQUTTa6tlrzWs/d9ALXxAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T20:18:57.370123Z","bundle_sha256":"b2077e03607a80c5108d89cfc3419cc98df8a18f0be430873075db51c4e2293f"}}