{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:KKTQZU2M6PTIJXJOA73G4JMHLZ","short_pith_number":"pith:KKTQZU2M","canonical_record":{"source":{"id":"1408.1404","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-06T20:00:17Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"45fcb1f1f106631051a56fb504348827fcbf0c1a95bd0105661f0df6ffddd075","abstract_canon_sha256":"06e9a9f4b5f6cae3c6088f8b78ada265603cd45f3e2cfe6a6ed2390dd275c7c3"},"schema_version":"1.0"},"canonical_sha256":"52a70cd34cf3e684dd2e07f66e25875e579e47acdf25ef3b37f99b4ed470e6ca","source":{"kind":"arxiv","id":"1408.1404","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.1404","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"arxiv_version","alias_value":"1408.1404v3","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.1404","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"pith_short_12","alias_value":"KKTQZU2M6PTI","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KKTQZU2M6PTIJXJO","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KKTQZU2M","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:KKTQZU2M6PTIJXJOA73G4JMHLZ","target":"record","payload":{"canonical_record":{"source":{"id":"1408.1404","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-06T20:00:17Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"45fcb1f1f106631051a56fb504348827fcbf0c1a95bd0105661f0df6ffddd075","abstract_canon_sha256":"06e9a9f4b5f6cae3c6088f8b78ada265603cd45f3e2cfe6a6ed2390dd275c7c3"},"schema_version":"1.0"},"canonical_sha256":"52a70cd34cf3e684dd2e07f66e25875e579e47acdf25ef3b37f99b4ed470e6ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:54.228308Z","signature_b64":"DCkN9P0HUAIpMxzyTSTCidWfrcPC9BZcxrnw1MQQiGwvtff1Pk4kJ2HxiYBCHl4UGXfLT40/QEN5DpMnTRmvDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"52a70cd34cf3e684dd2e07f66e25875e579e47acdf25ef3b37f99b4ed470e6ca","last_reissued_at":"2026-05-18T01:38:54.227588Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:54.227588Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.1404","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:38:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M5/uMsJ+McWG2iLOAUcXJPcVs93ndGoU95QICiZ6V3PmmIWFILoyYefZ8TwFggKi/8yISZIABbpzPZ7o2UqPAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T07:52:06.857791Z"},"content_sha256":"5267af5678a0e9ad6f8bffcf627903f316861dd30b44baa5535a7c724e964e36","schema_version":"1.0","event_id":"sha256:5267af5678a0e9ad6f8bffcf627903f316861dd30b44baa5535a7c724e964e36"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:KKTQZU2M6PTIJXJOA73G4JMHLZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Early Emission from the Type IIn Supernova 1998S at High Resolution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Alexei V. Filippenko, Douglas C. Leonard, Isaac Shivvers, Jon C. Mauerhan, Jose H. Groh, Ori D. Fox","submitted_at":"2014-08-06T20:00:17Z","abstract_excerpt":"The well-studied Type IIn supernova (SN) 1998S is often dubbed the prototypical SN IIn, and it provides a unique opportunity to study its progenitor star from within as the SN lights up dense circumstellar material (CSM) launched from the progenitor. Here we present a Keck HIRES spectrum of SN 1998S taken within a few days after core collapse - both the earliest high-resolution ($\\Delta\\lambda < 1.0\\,\\AA$) spectrum published of a SN IIn and the earliest published spectrum of SN 1998S. Modern SN studies achieve impressively short turn-around times between SN detection and the first observed spe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.1404","kind":"arxiv","version":3},"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":"2026-05-18T01:38:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BXzm93sIYqMZrSsRD8yMcUTWy9h8AMRNwYtRxyQqezRjOj1ZZCjLHdwkTZDbyOvzF82QvcHAvAgAYo7dLfFYCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T07:52:06.858139Z"},"content_sha256":"23cb3e16e7663a7c8ae29dde193ca442e46a002e7bcf666ec39e613d38cb66f7","schema_version":"1.0","event_id":"sha256:23cb3e16e7663a7c8ae29dde193ca442e46a002e7bcf666ec39e613d38cb66f7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/bundle.json","state_url":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/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":"2026-06-01T07:52:06Z","links":{"resolver":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ","bundle":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/bundle.json","state":"https://pith.science/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KKTQZU2M6PTIJXJOA73G4JMHLZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:KKTQZU2M6PTIJXJOA73G4JMHLZ","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":"06e9a9f4b5f6cae3c6088f8b78ada265603cd45f3e2cfe6a6ed2390dd275c7c3","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-06T20:00:17Z","title_canon_sha256":"45fcb1f1f106631051a56fb504348827fcbf0c1a95bd0105661f0df6ffddd075"},"schema_version":"1.0","source":{"id":"1408.1404","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.1404","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"arxiv_version","alias_value":"1408.1404v3","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.1404","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"pith_short_12","alias_value":"KKTQZU2M6PTI","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KKTQZU2M6PTIJXJO","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KKTQZU2M","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:23cb3e16e7663a7c8ae29dde193ca442e46a002e7bcf666ec39e613d38cb66f7","target":"graph","created_at":"2026-05-18T01:38:54Z","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 well-studied Type IIn supernova (SN) 1998S is often dubbed the prototypical SN IIn, and it provides a unique opportunity to study its progenitor star from within as the SN lights up dense circumstellar material (CSM) launched from the progenitor. Here we present a Keck HIRES spectrum of SN 1998S taken within a few days after core collapse - both the earliest high-resolution ($\\Delta\\lambda < 1.0\\,\\AA$) spectrum published of a SN IIn and the earliest published spectrum of SN 1998S. Modern SN studies achieve impressively short turn-around times between SN detection and the first observed spe","authors_text":"Alexei V. Filippenko, Douglas C. Leonard, Isaac Shivvers, Jon C. Mauerhan, Jose H. Groh, Ori D. Fox","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-06T20:00:17Z","title":"Early Emission from the Type IIn Supernova 1998S at High Resolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.1404","kind":"arxiv","version":3},"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":"sha256:5267af5678a0e9ad6f8bffcf627903f316861dd30b44baa5535a7c724e964e36","target":"record","created_at":"2026-05-18T01:38:54Z","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":"06e9a9f4b5f6cae3c6088f8b78ada265603cd45f3e2cfe6a6ed2390dd275c7c3","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-08-06T20:00:17Z","title_canon_sha256":"45fcb1f1f106631051a56fb504348827fcbf0c1a95bd0105661f0df6ffddd075"},"schema_version":"1.0","source":{"id":"1408.1404","kind":"arxiv","version":3}},"canonical_sha256":"52a70cd34cf3e684dd2e07f66e25875e579e47acdf25ef3b37f99b4ed470e6ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"52a70cd34cf3e684dd2e07f66e25875e579e47acdf25ef3b37f99b4ed470e6ca","first_computed_at":"2026-05-18T01:38:54.227588Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:54.227588Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DCkN9P0HUAIpMxzyTSTCidWfrcPC9BZcxrnw1MQQiGwvtff1Pk4kJ2HxiYBCHl4UGXfLT40/QEN5DpMnTRmvDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:54.228308Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.1404","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5267af5678a0e9ad6f8bffcf627903f316861dd30b44baa5535a7c724e964e36","sha256:23cb3e16e7663a7c8ae29dde193ca442e46a002e7bcf666ec39e613d38cb66f7"],"state_sha256":"0e5142350c7572c8e57c08dca2e037dd8bfd074cbee14c4e18e6d5919d28fef8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NCw1Y7EYQsA0fgJgt6UZiM/QgAGbBpBeWvmwxiduUereA7RgUGgU7x1t4l2eq03RyJNQR23Ey21hXge+pANpDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T07:52:06.860115Z","bundle_sha256":"4ded3a94f0a2918076b7e9b6d497949d83f8abec1b0e2045ac8aa9635d98930d"}}