{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:5ERF2J6S4OKKUUCGMUV6IO6F5L","short_pith_number":"pith:5ERF2J6S","canonical_record":{"source":{"id":"1307.3555","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-12T20:00:02Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"4a98e61e71a5a29787dec135d2ef0d3786d5bdb21558c6345ff4e685fdda4834","abstract_canon_sha256":"ffc6ec86337522cc7d7b9e07873e782f5a3196e6ce9c9d4e70d90e063acc722f"},"schema_version":"1.0"},"canonical_sha256":"e9225d27d2e394aa5046652be43bc5eadaa35ce6f326f7c4385c7e81f75dc3d9","source":{"kind":"arxiv","id":"1307.3555","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.3555","created_at":"2026-05-18T01:48:50Z"},{"alias_kind":"arxiv_version","alias_value":"1307.3555v2","created_at":"2026-05-18T01:48:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.3555","created_at":"2026-05-18T01:48:50Z"},{"alias_kind":"pith_short_12","alias_value":"5ERF2J6S4OKK","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5ERF2J6S4OKKUUCG","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5ERF2J6S","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:5ERF2J6S4OKKUUCGMUV6IO6F5L","target":"record","payload":{"canonical_record":{"source":{"id":"1307.3555","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-12T20:00:02Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"4a98e61e71a5a29787dec135d2ef0d3786d5bdb21558c6345ff4e685fdda4834","abstract_canon_sha256":"ffc6ec86337522cc7d7b9e07873e782f5a3196e6ce9c9d4e70d90e063acc722f"},"schema_version":"1.0"},"canonical_sha256":"e9225d27d2e394aa5046652be43bc5eadaa35ce6f326f7c4385c7e81f75dc3d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:50.833948Z","signature_b64":"vsbq6YcIR4Z4wDZ/TO+sBW9FS+Etu5GCz1M09wzaPXyavhYZVg7QoKcrpnJT4njLrIQs8mx/fkZqi/7vte8dAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9225d27d2e394aa5046652be43bc5eadaa35ce6f326f7c4385c7e81f75dc3d9","last_reissued_at":"2026-05-18T01:48:50.833291Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:50.833291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.3555","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":"2026-05-18T01:48:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TNwfbyAqyip+jkLpoQswGnLcSVnAdgkSVlMkGTTSOnRwH9c4xm5J/fIAGDFrE+dqqU6F/P7SS1YM0vNbg+LnBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:21:22.286425Z"},"content_sha256":"9c24fef93a092e6d5bf908a7a3af52e8845a6df1f39668d6b69fb0bb15253d44","schema_version":"1.0","event_id":"sha256:9c24fef93a092e6d5bf908a7a3af52e8845a6df1f39668d6b69fb0bb15253d44"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:5ERF2J6S4OKKUUCGMUV6IO6F5L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SN 2000cx and SN 2013bh: Extremely Rare, Nearly Twin Type Ia Supernovae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.SR","authors_text":"Ariel Goobar, Avishay Gal-Yam, Daniel A. Perley, David Tal, G. H. Marion, Iair Arcavi, Isaac Shivvers, J. Craig Wheeler, Jeffrey M. Silverman, Joel Johansson, Joshua S. Bloom, Jozsef Vinko, Mansi M. Kasliwal, Ori D. Fox, Peter E. Nugent, Rahman Amanullah, Russ Laher, Shrinivas R. Kulkarni, William H. Lee, Yi Cao","submitted_at":"2013-07-12T20:00:02Z","abstract_excerpt":"The Type Ia supernova (SN Ia) SN 2000cx was one of the most peculiar transients ever discovered, with a rise to maximum brightness typical of a SN Ia, but a slower decline and a higher photospheric temperature. Thirteen years later SN 2013bh (aka iPTF13abc), a near identical twin, was discovered and we obtained optical and near-IR photometry and low-resolution optical spectroscopy from discovery until about 1 month past r-band maximum brightness. The spectra of both objects show iron-group elements (Co II, Ni II, Fe II, Fe III, and high-velocity features [HVFs] of Ti II), intermediate-mass ele"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.3555","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":""},"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":"2026-05-18T01:48:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h56JWdgq64fESFzU0//0Bx/sDhDbzIEzwrBEzeSat2zGCCc1bgM316gpuoezzGDP+9aRs9EtD1i25Tw9tJfZAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:21:22.286788Z"},"content_sha256":"ec75f2b14cbd6c474741cf6839f04161e9008a3bbbb6bf1dbbbb8577e6a24afd","schema_version":"1.0","event_id":"sha256:ec75f2b14cbd6c474741cf6839f04161e9008a3bbbb6bf1dbbbb8577e6a24afd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5ERF2J6S4OKKUUCGMUV6IO6F5L/bundle.json","state_url":"https://pith.science/pith/5ERF2J6S4OKKUUCGMUV6IO6F5L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5ERF2J6S4OKKUUCGMUV6IO6F5L/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":"2026-05-28T08:21:22Z","links":{"resolver":"https://pith.science/pith/5ERF2J6S4OKKUUCGMUV6IO6F5L","bundle":"https://pith.science/pith/5ERF2J6S4OKKUUCGMUV6IO6F5L/bundle.json","state":"https://pith.science/pith/5ERF2J6S4OKKUUCGMUV6IO6F5L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5ERF2J6S4OKKUUCGMUV6IO6F5L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:5ERF2J6S4OKKUUCGMUV6IO6F5L","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":"ffc6ec86337522cc7d7b9e07873e782f5a3196e6ce9c9d4e70d90e063acc722f","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-12T20:00:02Z","title_canon_sha256":"4a98e61e71a5a29787dec135d2ef0d3786d5bdb21558c6345ff4e685fdda4834"},"schema_version":"1.0","source":{"id":"1307.3555","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.3555","created_at":"2026-05-18T01:48:50Z"},{"alias_kind":"arxiv_version","alias_value":"1307.3555v2","created_at":"2026-05-18T01:48:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.3555","created_at":"2026-05-18T01:48:50Z"},{"alias_kind":"pith_short_12","alias_value":"5ERF2J6S4OKK","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5ERF2J6S4OKKUUCG","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5ERF2J6S","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:ec75f2b14cbd6c474741cf6839f04161e9008a3bbbb6bf1dbbbb8577e6a24afd","target":"graph","created_at":"2026-05-18T01:48:50Z","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 Type Ia supernova (SN Ia) SN 2000cx was one of the most peculiar transients ever discovered, with a rise to maximum brightness typical of a SN Ia, but a slower decline and a higher photospheric temperature. Thirteen years later SN 2013bh (aka iPTF13abc), a near identical twin, was discovered and we obtained optical and near-IR photometry and low-resolution optical spectroscopy from discovery until about 1 month past r-band maximum brightness. The spectra of both objects show iron-group elements (Co II, Ni II, Fe II, Fe III, and high-velocity features [HVFs] of Ti II), intermediate-mass ele","authors_text":"Ariel Goobar, Avishay Gal-Yam, Daniel A. Perley, David Tal, G. H. Marion, Iair Arcavi, Isaac Shivvers, J. Craig Wheeler, Jeffrey M. Silverman, Joel Johansson, Joshua S. Bloom, Jozsef Vinko, Mansi M. Kasliwal, Ori D. Fox, Peter E. Nugent, Rahman Amanullah, Russ Laher, Shrinivas R. Kulkarni, William H. Lee, Yi Cao","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-12T20:00:02Z","title":"SN 2000cx and SN 2013bh: Extremely Rare, Nearly Twin Type Ia Supernovae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.3555","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":"sha256:9c24fef93a092e6d5bf908a7a3af52e8845a6df1f39668d6b69fb0bb15253d44","target":"record","created_at":"2026-05-18T01:48:50Z","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":"ffc6ec86337522cc7d7b9e07873e782f5a3196e6ce9c9d4e70d90e063acc722f","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-12T20:00:02Z","title_canon_sha256":"4a98e61e71a5a29787dec135d2ef0d3786d5bdb21558c6345ff4e685fdda4834"},"schema_version":"1.0","source":{"id":"1307.3555","kind":"arxiv","version":2}},"canonical_sha256":"e9225d27d2e394aa5046652be43bc5eadaa35ce6f326f7c4385c7e81f75dc3d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9225d27d2e394aa5046652be43bc5eadaa35ce6f326f7c4385c7e81f75dc3d9","first_computed_at":"2026-05-18T01:48:50.833291Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:50.833291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vsbq6YcIR4Z4wDZ/TO+sBW9FS+Etu5GCz1M09wzaPXyavhYZVg7QoKcrpnJT4njLrIQs8mx/fkZqi/7vte8dAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:50.833948Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.3555","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9c24fef93a092e6d5bf908a7a3af52e8845a6df1f39668d6b69fb0bb15253d44","sha256:ec75f2b14cbd6c474741cf6839f04161e9008a3bbbb6bf1dbbbb8577e6a24afd"],"state_sha256":"470973a8121dacdf77c80e94858334433736f062ce9938a28fd2851aefee3b64"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yt+OXeMbhL8hoVEQ4HKue28l3tDMV/bu9PjRoR3ogd5pkf0xthxiVUcz78gcNvFRoYdWbhYS/EkOCP3Wv1qoAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:21:22.288902Z","bundle_sha256":"c72049bb6401591b5bf70592dc29e48175fa5aec8ca97336b8cc876d5b1808a4"}}