{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:RZ7ZXHLPDSBHT6JK6WIFD76FAA","short_pith_number":"pith:RZ7ZXHLP","canonical_record":{"source":{"id":"1312.0628","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-12-02T21:14:19Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"005fc277c5997bbf455007065b3d37187261d2d45537309ff0c29a77997f65ef","abstract_canon_sha256":"f023f62c93a269f796193771d08af54164dbbe2722b9fd02738b74f8bf2b62ad"},"schema_version":"1.0"},"canonical_sha256":"8e7f9b9d6f1c8279f92af59051ffc5000d505c2d4217a46c2fa3b521d053225e","source":{"kind":"arxiv","id":"1312.0628","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.0628","created_at":"2026-05-18T01:45:59Z"},{"alias_kind":"arxiv_version","alias_value":"1312.0628v3","created_at":"2026-05-18T01:45:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.0628","created_at":"2026-05-18T01:45:59Z"},{"alias_kind":"pith_short_12","alias_value":"RZ7ZXHLPDSBH","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"RZ7ZXHLPDSBHT6JK","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"RZ7ZXHLP","created_at":"2026-05-18T12:27:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:RZ7ZXHLPDSBHT6JK6WIFD76FAA","target":"record","payload":{"canonical_record":{"source":{"id":"1312.0628","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-12-02T21:14:19Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"005fc277c5997bbf455007065b3d37187261d2d45537309ff0c29a77997f65ef","abstract_canon_sha256":"f023f62c93a269f796193771d08af54164dbbe2722b9fd02738b74f8bf2b62ad"},"schema_version":"1.0"},"canonical_sha256":"8e7f9b9d6f1c8279f92af59051ffc5000d505c2d4217a46c2fa3b521d053225e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:59.589644Z","signature_b64":"A8Y1EiRUl5SbUZcLeigJT0KM45RVX4cIaJVZfy5lXMuUhTuHCmhM9M4seTDXUZ41PRZNS/HJevXDCVhOerbWDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8e7f9b9d6f1c8279f92af59051ffc5000d505c2d4217a46c2fa3b521d053225e","last_reissued_at":"2026-05-18T01:45:59.588754Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:59.588754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.0628","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":"2026-05-18T01:45:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5Rj4VCPlzF3G7vG9A0NWAo5xtD1opqASUfB8IX7UNGLJD8YsreJes5WNzNYVrAzY5cDlPi5aiIEhdklZNcZPBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T12:56:41.911335Z"},"content_sha256":"bb9cacb0aa77ea20059bb5d7cfc74d03d9659b8a7148b9ff4e811fb7da24be75","schema_version":"1.0","event_id":"sha256:bb9cacb0aa77ea20059bb5d7cfc74d03d9659b8a7148b9ff4e811fb7da24be75"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:RZ7ZXHLPDSBHT6JK6WIFD76FAA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observational clues to the progenitors of Type-Ia supernovae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.CO","authors_text":"Dan Maoz, Filippo Mannucci, Gijs Nelemans","submitted_at":"2013-12-02T21:14:19Z","abstract_excerpt":"Type-Ia supernovae (SNe Ia) are important distance indicators, element factories, cosmic-ray accelerators, kinetic-energy sources in galaxy evolution, and endpoints of stellar binary evolution. It has long been clear that a SN Ia must be the runaway thermonuclear explosion of a degenerate carbon-oxygen stellar core, most likely a white dwarf (WD). However, the specific progenitor systems of SNe Ia, and the processes that lead to their ignition, have not been identified. Two broad classes of progenitor binary systems have long been considered: single-degenerate (SD), in which a WD gains mass fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.0628","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":"2026-05-18T01:45:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GlMlO/kXDMFbOAi9pMMsteJHQ7CeMOLn1lec/IDzjE2VG/A7YIkwrbmA4vXW0ZRerhlPzqvca3mQ3I+X+IwLCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T12:56:41.911690Z"},"content_sha256":"8921725d1d83ff42302a928c12493c92b22f293709097aaa2cf66b1567ded861","schema_version":"1.0","event_id":"sha256:8921725d1d83ff42302a928c12493c92b22f293709097aaa2cf66b1567ded861"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RZ7ZXHLPDSBHT6JK6WIFD76FAA/bundle.json","state_url":"https://pith.science/pith/RZ7ZXHLPDSBHT6JK6WIFD76FAA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RZ7ZXHLPDSBHT6JK6WIFD76FAA/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":"2026-05-19T12:56:41Z","links":{"resolver":"https://pith.science/pith/RZ7ZXHLPDSBHT6JK6WIFD76FAA","bundle":"https://pith.science/pith/RZ7ZXHLPDSBHT6JK6WIFD76FAA/bundle.json","state":"https://pith.science/pith/RZ7ZXHLPDSBHT6JK6WIFD76FAA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RZ7ZXHLPDSBHT6JK6WIFD76FAA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:RZ7ZXHLPDSBHT6JK6WIFD76FAA","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":"f023f62c93a269f796193771d08af54164dbbe2722b9fd02738b74f8bf2b62ad","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-12-02T21:14:19Z","title_canon_sha256":"005fc277c5997bbf455007065b3d37187261d2d45537309ff0c29a77997f65ef"},"schema_version":"1.0","source":{"id":"1312.0628","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.0628","created_at":"2026-05-18T01:45:59Z"},{"alias_kind":"arxiv_version","alias_value":"1312.0628v3","created_at":"2026-05-18T01:45:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.0628","created_at":"2026-05-18T01:45:59Z"},{"alias_kind":"pith_short_12","alias_value":"RZ7ZXHLPDSBH","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"RZ7ZXHLPDSBHT6JK","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"RZ7ZXHLP","created_at":"2026-05-18T12:27:59Z"}],"graph_snapshots":[{"event_id":"sha256:8921725d1d83ff42302a928c12493c92b22f293709097aaa2cf66b1567ded861","target":"graph","created_at":"2026-05-18T01:45:59Z","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":"Type-Ia supernovae (SNe Ia) are important distance indicators, element factories, cosmic-ray accelerators, kinetic-energy sources in galaxy evolution, and endpoints of stellar binary evolution. It has long been clear that a SN Ia must be the runaway thermonuclear explosion of a degenerate carbon-oxygen stellar core, most likely a white dwarf (WD). However, the specific progenitor systems of SNe Ia, and the processes that lead to their ignition, have not been identified. Two broad classes of progenitor binary systems have long been considered: single-degenerate (SD), in which a WD gains mass fr","authors_text":"Dan Maoz, Filippo Mannucci, Gijs Nelemans","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-12-02T21:14:19Z","title":"Observational clues to the progenitors of Type-Ia supernovae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.0628","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:bb9cacb0aa77ea20059bb5d7cfc74d03d9659b8a7148b9ff4e811fb7da24be75","target":"record","created_at":"2026-05-18T01:45:59Z","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":"f023f62c93a269f796193771d08af54164dbbe2722b9fd02738b74f8bf2b62ad","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2013-12-02T21:14:19Z","title_canon_sha256":"005fc277c5997bbf455007065b3d37187261d2d45537309ff0c29a77997f65ef"},"schema_version":"1.0","source":{"id":"1312.0628","kind":"arxiv","version":3}},"canonical_sha256":"8e7f9b9d6f1c8279f92af59051ffc5000d505c2d4217a46c2fa3b521d053225e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8e7f9b9d6f1c8279f92af59051ffc5000d505c2d4217a46c2fa3b521d053225e","first_computed_at":"2026-05-18T01:45:59.588754Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:59.588754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A8Y1EiRUl5SbUZcLeigJT0KM45RVX4cIaJVZfy5lXMuUhTuHCmhM9M4seTDXUZ41PRZNS/HJevXDCVhOerbWDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:59.589644Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.0628","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bb9cacb0aa77ea20059bb5d7cfc74d03d9659b8a7148b9ff4e811fb7da24be75","sha256:8921725d1d83ff42302a928c12493c92b22f293709097aaa2cf66b1567ded861"],"state_sha256":"bfd09fb4ef2efe27fc412c350d28576d858eb1ea7b5490a8adcaf33df14fde4a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4fxshooYDwD1Oq5fQw0ZENjeUqQJJflA1BLQs1KyUfnwE0V1uOAaFGYBJX9NWDcJeqfed2sDSYVFoOSqDW+0BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T12:56:41.913372Z","bundle_sha256":"b18284d677f64a48213504d4c1e967e92948f8a6551c4dcd6488b174c838dbb0"}}