{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:T3MWOCS5OVB7DNTL4CNZX2X72U","short_pith_number":"pith:T3MWOCS5","canonical_record":{"source":{"id":"2109.01752","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-09-03T23:46:05Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"01fffd3bbb7362d65b13162d40105b0c7175d92a8cd518f92ea8b19009dd2b66","abstract_canon_sha256":"e126d12f9fe66ee80e52bbad1e0a09cf21355d12b8a940b9bc470cda0e6a515a"},"schema_version":"1.0"},"canonical_sha256":"9ed9670a5d7543f1b66be09b9beaffd53f0f512bd0f3446507954bfae808d2ca","source":{"kind":"arxiv","id":"2109.01752","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.01752","created_at":"2026-07-05T04:37:18Z"},{"alias_kind":"arxiv_version","alias_value":"2109.01752v2","created_at":"2026-07-05T04:37:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.01752","created_at":"2026-07-05T04:37:18Z"},{"alias_kind":"pith_short_12","alias_value":"T3MWOCS5OVB7","created_at":"2026-07-05T04:37:18Z"},{"alias_kind":"pith_short_16","alias_value":"T3MWOCS5OVB7DNTL","created_at":"2026-07-05T04:37:18Z"},{"alias_kind":"pith_short_8","alias_value":"T3MWOCS5","created_at":"2026-07-05T04:37:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:T3MWOCS5OVB7DNTL4CNZX2X72U","target":"record","payload":{"canonical_record":{"source":{"id":"2109.01752","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-09-03T23:46:05Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"01fffd3bbb7362d65b13162d40105b0c7175d92a8cd518f92ea8b19009dd2b66","abstract_canon_sha256":"e126d12f9fe66ee80e52bbad1e0a09cf21355d12b8a940b9bc470cda0e6a515a"},"schema_version":"1.0"},"canonical_sha256":"9ed9670a5d7543f1b66be09b9beaffd53f0f512bd0f3446507954bfae808d2ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:37:18.187614Z","signature_b64":"q5Rc0hgPjLpspmKrvtzk5twtaqhgM3j1toqkUw7PojBFWMC6aRbid5JkydfFUzBhZDH9UWPPA4l7zldZ2TGECA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9ed9670a5d7543f1b66be09b9beaffd53f0f512bd0f3446507954bfae808d2ca","last_reissued_at":"2026-07-05T04:37:18.187103Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:37:18.187103Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.01752","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:37:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QIRBRY6Y+FNUJRs6vzaZIuJT4pp7zeZ1Kh22CuVcAnByuYJtMPqXzLmVS4uEROKV3Kn+CnaMYC2f3x6WwACzBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T15:44:43.747311Z"},"content_sha256":"55f0b7f50bb27ee77b24f0ea75855008baafe6cfd6e4b5c65d28fb5470ae817e","schema_version":"1.0","event_id":"sha256:55f0b7f50bb27ee77b24f0ea75855008baafe6cfd6e4b5c65d28fb5470ae817e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:T3MWOCS5OVB7DNTL4CNZX2X72U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A transient radio source consistent with a merger-triggered core collapse supernova","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Andrew K. Hughes, Anna Y. Q. Ho, Assaf Horesh, Dillon Z. Dong, Ehud Nakar, Gregg Hallinan, Kenta Hotokezaka, Kishalay De, Kunal Mooley, Mansi M. Kasliwal, Shri R. Kulkarni, Steve T. Myers, Vikram Ravi","submitted_at":"2021-09-03T23:46:05Z","abstract_excerpt":"A core-collapse supernova occurs when exothermic fusion ceases in the core of a massive star, typically due to exhaustion of nuclear fuel. Theory predicts that fusion could be interrupted earlier, by merging of the star with a compact binary companion. We report a luminous radio transient, VT J121001+495647, found in the Very Large Array Sky Survey. The radio emission is consistent with supernova ejecta colliding with a dense shell of material, potentially ejected by binary interaction in the centuries prior to explosion. We associate the supernova with an archival X-ray transient, which impli"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.01752","kind":"arxiv","version":2},"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/2109.01752/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":"2026-07-05T04:37:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YAXjrF1Koxh4VqJHoauJjP588/igmkbt3wpB7IiZomQ7CME1gWFBKVN0K3Dto0lmzsMjqKtcPuvOM82IODvaBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T15:44:43.748237Z"},"content_sha256":"50db957a8c03a6a0f49b8fdde7f2445d1cc44906c2cd0a2c09923be178f03b42","schema_version":"1.0","event_id":"sha256:50db957a8c03a6a0f49b8fdde7f2445d1cc44906c2cd0a2c09923be178f03b42"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T3MWOCS5OVB7DNTL4CNZX2X72U/bundle.json","state_url":"https://pith.science/pith/T3MWOCS5OVB7DNTL4CNZX2X72U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T3MWOCS5OVB7DNTL4CNZX2X72U/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":"2026-08-04T15:44:43Z","links":{"resolver":"https://pith.science/pith/T3MWOCS5OVB7DNTL4CNZX2X72U","bundle":"https://pith.science/pith/T3MWOCS5OVB7DNTL4CNZX2X72U/bundle.json","state":"https://pith.science/pith/T3MWOCS5OVB7DNTL4CNZX2X72U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T3MWOCS5OVB7DNTL4CNZX2X72U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:T3MWOCS5OVB7DNTL4CNZX2X72U","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":"e126d12f9fe66ee80e52bbad1e0a09cf21355d12b8a940b9bc470cda0e6a515a","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-09-03T23:46:05Z","title_canon_sha256":"01fffd3bbb7362d65b13162d40105b0c7175d92a8cd518f92ea8b19009dd2b66"},"schema_version":"1.0","source":{"id":"2109.01752","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.01752","created_at":"2026-07-05T04:37:18Z"},{"alias_kind":"arxiv_version","alias_value":"2109.01752v2","created_at":"2026-07-05T04:37:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.01752","created_at":"2026-07-05T04:37:18Z"},{"alias_kind":"pith_short_12","alias_value":"T3MWOCS5OVB7","created_at":"2026-07-05T04:37:18Z"},{"alias_kind":"pith_short_16","alias_value":"T3MWOCS5OVB7DNTL","created_at":"2026-07-05T04:37:18Z"},{"alias_kind":"pith_short_8","alias_value":"T3MWOCS5","created_at":"2026-07-05T04:37:18Z"}],"graph_snapshots":[{"event_id":"sha256:50db957a8c03a6a0f49b8fdde7f2445d1cc44906c2cd0a2c09923be178f03b42","target":"graph","created_at":"2026-07-05T04:37:18Z","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/2109.01752/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A core-collapse supernova occurs when exothermic fusion ceases in the core of a massive star, typically due to exhaustion of nuclear fuel. Theory predicts that fusion could be interrupted earlier, by merging of the star with a compact binary companion. We report a luminous radio transient, VT J121001+495647, found in the Very Large Array Sky Survey. The radio emission is consistent with supernova ejecta colliding with a dense shell of material, potentially ejected by binary interaction in the centuries prior to explosion. We associate the supernova with an archival X-ray transient, which impli","authors_text":"Andrew K. Hughes, Anna Y. Q. Ho, Assaf Horesh, Dillon Z. Dong, Ehud Nakar, Gregg Hallinan, Kenta Hotokezaka, Kishalay De, Kunal Mooley, Mansi M. Kasliwal, Shri R. Kulkarni, Steve T. Myers, Vikram Ravi","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-09-03T23:46:05Z","title":"A transient radio source consistent with a merger-triggered core collapse supernova"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.01752","kind":"arxiv","version":2},"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":"sha256:55f0b7f50bb27ee77b24f0ea75855008baafe6cfd6e4b5c65d28fb5470ae817e","target":"record","created_at":"2026-07-05T04:37:18Z","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":"e126d12f9fe66ee80e52bbad1e0a09cf21355d12b8a940b9bc470cda0e6a515a","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-09-03T23:46:05Z","title_canon_sha256":"01fffd3bbb7362d65b13162d40105b0c7175d92a8cd518f92ea8b19009dd2b66"},"schema_version":"1.0","source":{"id":"2109.01752","kind":"arxiv","version":2}},"canonical_sha256":"9ed9670a5d7543f1b66be09b9beaffd53f0f512bd0f3446507954bfae808d2ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9ed9670a5d7543f1b66be09b9beaffd53f0f512bd0f3446507954bfae808d2ca","first_computed_at":"2026-07-05T04:37:18.187103Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:37:18.187103Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q5Rc0hgPjLpspmKrvtzk5twtaqhgM3j1toqkUw7PojBFWMC6aRbid5JkydfFUzBhZDH9UWPPA4l7zldZ2TGECA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:37:18.187614Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.01752","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:55f0b7f50bb27ee77b24f0ea75855008baafe6cfd6e4b5c65d28fb5470ae817e","sha256:50db957a8c03a6a0f49b8fdde7f2445d1cc44906c2cd0a2c09923be178f03b42"],"state_sha256":"bf7f61987de1412f6374cf552eea8099f6eaf2349c7a5ecae493dc5cc60dfff6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q55Cwf8cKMFM3HUIhOtCs5GFr30VIra8gUUmJE24MT3wQlQwtrg5S98X0pKHsKAAjVYmBoK3xhARgrw0Y4xeAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T15:44:43.751988Z","bundle_sha256":"89de6f6885e7302dc45acd87617980c601d600cd8d97f91234db6d2b73e5c0d1"}}