{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:YKTYDFZMQ7RLZBSOHR3TPPIUNT","short_pith_number":"pith:YKTYDFZM","canonical_record":{"source":{"id":"1304.1173","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-03T20:08:34Z","cross_cats_sorted":[],"title_canon_sha256":"2ff49ea1e07733f44b4538fbbeab8c741c6114b4d4fe8309d35531a7ca363ddd","abstract_canon_sha256":"c1e4e247cb701057ea13d065753ac9bb6b226eb6f6adadc206571be5eb06ed37"},"schema_version":"1.0"},"canonical_sha256":"c2a781972c87e2bc864e3c7737bd146cfaee97c876d80ed84b69a7278b078dcc","source":{"kind":"arxiv","id":"1304.1173","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.1173","created_at":"2026-05-18T01:50:43Z"},{"alias_kind":"arxiv_version","alias_value":"1304.1173v1","created_at":"2026-05-18T01:50:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.1173","created_at":"2026-05-18T01:50:43Z"},{"alias_kind":"pith_short_12","alias_value":"YKTYDFZMQ7RL","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YKTYDFZMQ7RLZBSO","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YKTYDFZM","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:YKTYDFZMQ7RLZBSOHR3TPPIUNT","target":"record","payload":{"canonical_record":{"source":{"id":"1304.1173","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-03T20:08:34Z","cross_cats_sorted":[],"title_canon_sha256":"2ff49ea1e07733f44b4538fbbeab8c741c6114b4d4fe8309d35531a7ca363ddd","abstract_canon_sha256":"c1e4e247cb701057ea13d065753ac9bb6b226eb6f6adadc206571be5eb06ed37"},"schema_version":"1.0"},"canonical_sha256":"c2a781972c87e2bc864e3c7737bd146cfaee97c876d80ed84b69a7278b078dcc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:43.341842Z","signature_b64":"SkqTBTxJPCeafV1jJwHNbqeB547wDjivKPdlZrcSTmfCB8rWoVpv3rwTYOMGiOgmRU2kHPEZafT6TAdbPIgTDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c2a781972c87e2bc864e3c7737bd146cfaee97c876d80ed84b69a7278b078dcc","last_reissued_at":"2026-05-18T01:50:43.341271Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:43.341271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.1173","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":"2026-05-18T01:50:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cCin4ZThHhvS9alcM6WF6+QwhgNGfjsII8CcHt3pHZDZzL6TQWItMx01q2XtoBrP+vLuctJomq07fDShcp1FAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T19:28:57.580525Z"},"content_sha256":"c1b5a4ee6c0ded8799123adb861a7ee3a267831c40e12b57270f41f24b5b4789","schema_version":"1.0","event_id":"sha256:c1b5a4ee6c0ded8799123adb861a7ee3a267831c40e12b57270f41f24b5b4789"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:YKTYDFZMQ7RLZBSOHR3TPPIUNT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Superluminous X-rays from a superluminous supernova","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A.J. Levan (Warwick), A.M. Read (Leicester), B.D. Metzger (Columbia), N.R. Tanvir (Leicester), P.J. Wheatley (Warwick)","submitted_at":"2013-04-03T20:08:34Z","abstract_excerpt":"The discovery of a population of superluminous supernovae (SLSNe), with peak luminosities a factor of ~100 brighter than normal SNe (typically SLSNe have M_V <-21), has shown an unexpected diversity in core-collapse supernova properties. Numerous models have been postulated for the nature of these events, including a strong interaction of the shockwave with a dense circumstellar environment, a re-energizing of the outflow via a central engine, or an origin in the catastrophic destruction of the star following a loss of pressure due to pair production in an extremely massive stellar core (so-ca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.1173","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":"2026-05-18T01:50:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"beCikwDQLcgieJNM3rNdYARedzm2GPqt1ToUU5kaH9zZYsWaym1NzX9t3UnC8pgkycolh2v08IY4W0wJc37lCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T19:28:57.581579Z"},"content_sha256":"0baa3f3c1ac678b6a2583fedb923d6eed82fcb0d01b7cdcd447e7d316fc1b780","schema_version":"1.0","event_id":"sha256:0baa3f3c1ac678b6a2583fedb923d6eed82fcb0d01b7cdcd447e7d316fc1b780"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YKTYDFZMQ7RLZBSOHR3TPPIUNT/bundle.json","state_url":"https://pith.science/pith/YKTYDFZMQ7RLZBSOHR3TPPIUNT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YKTYDFZMQ7RLZBSOHR3TPPIUNT/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":"2026-08-16T19:28:57Z","links":{"resolver":"https://pith.science/pith/YKTYDFZMQ7RLZBSOHR3TPPIUNT","bundle":"https://pith.science/pith/YKTYDFZMQ7RLZBSOHR3TPPIUNT/bundle.json","state":"https://pith.science/pith/YKTYDFZMQ7RLZBSOHR3TPPIUNT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YKTYDFZMQ7RLZBSOHR3TPPIUNT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:YKTYDFZMQ7RLZBSOHR3TPPIUNT","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":"c1e4e247cb701057ea13d065753ac9bb6b226eb6f6adadc206571be5eb06ed37","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-03T20:08:34Z","title_canon_sha256":"2ff49ea1e07733f44b4538fbbeab8c741c6114b4d4fe8309d35531a7ca363ddd"},"schema_version":"1.0","source":{"id":"1304.1173","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.1173","created_at":"2026-05-18T01:50:43Z"},{"alias_kind":"arxiv_version","alias_value":"1304.1173v1","created_at":"2026-05-18T01:50:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.1173","created_at":"2026-05-18T01:50:43Z"},{"alias_kind":"pith_short_12","alias_value":"YKTYDFZMQ7RL","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YKTYDFZMQ7RLZBSO","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YKTYDFZM","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:0baa3f3c1ac678b6a2583fedb923d6eed82fcb0d01b7cdcd447e7d316fc1b780","target":"graph","created_at":"2026-05-18T01:50:43Z","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 discovery of a population of superluminous supernovae (SLSNe), with peak luminosities a factor of ~100 brighter than normal SNe (typically SLSNe have M_V <-21), has shown an unexpected diversity in core-collapse supernova properties. Numerous models have been postulated for the nature of these events, including a strong interaction of the shockwave with a dense circumstellar environment, a re-energizing of the outflow via a central engine, or an origin in the catastrophic destruction of the star following a loss of pressure due to pair production in an extremely massive stellar core (so-ca","authors_text":"A.J. Levan (Warwick), A.M. Read (Leicester), B.D. Metzger (Columbia), N.R. Tanvir (Leicester), P.J. Wheatley (Warwick)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-03T20:08:34Z","title":"Superluminous X-rays from a superluminous supernova"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.1173","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:c1b5a4ee6c0ded8799123adb861a7ee3a267831c40e12b57270f41f24b5b4789","target":"record","created_at":"2026-05-18T01:50:43Z","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":"c1e4e247cb701057ea13d065753ac9bb6b226eb6f6adadc206571be5eb06ed37","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-04-03T20:08:34Z","title_canon_sha256":"2ff49ea1e07733f44b4538fbbeab8c741c6114b4d4fe8309d35531a7ca363ddd"},"schema_version":"1.0","source":{"id":"1304.1173","kind":"arxiv","version":1}},"canonical_sha256":"c2a781972c87e2bc864e3c7737bd146cfaee97c876d80ed84b69a7278b078dcc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c2a781972c87e2bc864e3c7737bd146cfaee97c876d80ed84b69a7278b078dcc","first_computed_at":"2026-05-18T01:50:43.341271Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:43.341271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SkqTBTxJPCeafV1jJwHNbqeB547wDjivKPdlZrcSTmfCB8rWoVpv3rwTYOMGiOgmRU2kHPEZafT6TAdbPIgTDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:43.341842Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.1173","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c1b5a4ee6c0ded8799123adb861a7ee3a267831c40e12b57270f41f24b5b4789","sha256:0baa3f3c1ac678b6a2583fedb923d6eed82fcb0d01b7cdcd447e7d316fc1b780"],"state_sha256":"cd8a8c2ddcfd8d6d63ed466b057c5855062569877cd49b13376ce2e9d62f6ec4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i1xkSvKSJyMJdXzGELre0b+hd+1a29o+FnRZ1F9h0Cz0Cdqwajkumnj8kLKUcGUWDfV/k/Ma4wSgM6AFZEkZAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T19:28:57.592446Z","bundle_sha256":"5de60f1d498469d19ea3a6bd1144a5be0f3b2ee4cf81f10f4a6b803f9632223d"}}