{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:PICARWQIWOLIWNL62JWTHBYXOU","short_pith_number":"pith:PICARWQI","canonical_record":{"source":{"id":"1611.09353","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-11-27T18:25:06Z","cross_cats_sorted":[],"title_canon_sha256":"c791f6fa1b2caea03aa5256d52fd7db366cafe13d702c5024629df3d19f88419","abstract_canon_sha256":"04e7034f8703fbca7e01b707caa49b68f7cee81944fed790f6a09cab6cbc0735"},"schema_version":"1.0"},"canonical_sha256":"7a0408da08b3968b357ed26d3387177509dd62a60c00e0e4a5d285b4ffa34c59","source":{"kind":"arxiv","id":"1611.09353","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.09353","created_at":"2026-05-18T00:17:44Z"},{"alias_kind":"arxiv_version","alias_value":"1611.09353v1","created_at":"2026-05-18T00:17:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.09353","created_at":"2026-05-18T00:17:44Z"},{"alias_kind":"pith_short_12","alias_value":"PICARWQIWOLI","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"PICARWQIWOLIWNL6","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"PICARWQI","created_at":"2026-05-18T12:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:PICARWQIWOLIWNL62JWTHBYXOU","target":"record","payload":{"canonical_record":{"source":{"id":"1611.09353","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-11-27T18:25:06Z","cross_cats_sorted":[],"title_canon_sha256":"c791f6fa1b2caea03aa5256d52fd7db366cafe13d702c5024629df3d19f88419","abstract_canon_sha256":"04e7034f8703fbca7e01b707caa49b68f7cee81944fed790f6a09cab6cbc0735"},"schema_version":"1.0"},"canonical_sha256":"7a0408da08b3968b357ed26d3387177509dd62a60c00e0e4a5d285b4ffa34c59","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:17:44.261339Z","signature_b64":"ITTh74VPms0joepjmV2hRwNzV2Vfakb86Zl1A9EYCe3Ua/f4wnnL1ves0LarS5dvn7itTO32uMIZ28ucrUNXCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a0408da08b3968b357ed26d3387177509dd62a60c00e0e4a5d285b4ffa34c59","last_reissued_at":"2026-05-18T00:17:44.260622Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:17:44.260622Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.09353","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":"2026-05-18T00:17:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fAgrclp1wbRpC1qj8GE2OI1kSJP40YbPHLLkXrYzySH8LiyGfnQ+Ii9+pfJdzl5wJ+YnSoPPEjQSJNFb4Lk8CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:42:00.074567Z"},"content_sha256":"c7227560e4d215690357997c5b75998dadf2d0e2f5c1474170fe30e54b6d1405","schema_version":"1.0","event_id":"sha256:c7227560e4d215690357997c5b75998dadf2d0e2f5c1474170fe30e54b6d1405"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:PICARWQIWOLIWNL62JWTHBYXOU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observational and Physical Classification of Supernovae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Avishay Gal-Yam","submitted_at":"2016-11-27T18:25:06Z","abstract_excerpt":"This chapter describes the current classification scheme of supernovae (SNe). This scheme has evolved over many decades and now includes numerous SN Types and sub-types. Many of these are universally recognized, while there are controversies regarding the definitions, membership and even the names of some sub-classes; we will try to review here the commonly-used nomenclature, noting the main variants when possible. SN Types are defined according to observational properties; mostly visible-light spectra near maximum light, as well as according to their photometric properties. However, a long-te"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.09353","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":"2026-05-18T00:17:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KGSjgqOkkpbcomxAXK5jSQzveKmIaQZcpdvtJry92HyJi5hn2jKIXrJZyaBGHk2enP14oMz4RtRFsrmaY4PjCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T09:42:00.075257Z"},"content_sha256":"aba2d6723b9e489eeda6864761a5d474de7c08b076aeb640019ed0a03f859cf7","schema_version":"1.0","event_id":"sha256:aba2d6723b9e489eeda6864761a5d474de7c08b076aeb640019ed0a03f859cf7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PICARWQIWOLIWNL62JWTHBYXOU/bundle.json","state_url":"https://pith.science/pith/PICARWQIWOLIWNL62JWTHBYXOU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PICARWQIWOLIWNL62JWTHBYXOU/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":"2026-05-26T09:42:00Z","links":{"resolver":"https://pith.science/pith/PICARWQIWOLIWNL62JWTHBYXOU","bundle":"https://pith.science/pith/PICARWQIWOLIWNL62JWTHBYXOU/bundle.json","state":"https://pith.science/pith/PICARWQIWOLIWNL62JWTHBYXOU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PICARWQIWOLIWNL62JWTHBYXOU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:PICARWQIWOLIWNL62JWTHBYXOU","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":"04e7034f8703fbca7e01b707caa49b68f7cee81944fed790f6a09cab6cbc0735","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-11-27T18:25:06Z","title_canon_sha256":"c791f6fa1b2caea03aa5256d52fd7db366cafe13d702c5024629df3d19f88419"},"schema_version":"1.0","source":{"id":"1611.09353","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.09353","created_at":"2026-05-18T00:17:44Z"},{"alias_kind":"arxiv_version","alias_value":"1611.09353v1","created_at":"2026-05-18T00:17:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.09353","created_at":"2026-05-18T00:17:44Z"},{"alias_kind":"pith_short_12","alias_value":"PICARWQIWOLI","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"PICARWQIWOLIWNL6","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"PICARWQI","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:aba2d6723b9e489eeda6864761a5d474de7c08b076aeb640019ed0a03f859cf7","target":"graph","created_at":"2026-05-18T00:17:44Z","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":"This chapter describes the current classification scheme of supernovae (SNe). This scheme has evolved over many decades and now includes numerous SN Types and sub-types. Many of these are universally recognized, while there are controversies regarding the definitions, membership and even the names of some sub-classes; we will try to review here the commonly-used nomenclature, noting the main variants when possible. SN Types are defined according to observational properties; mostly visible-light spectra near maximum light, as well as according to their photometric properties. However, a long-te","authors_text":"Avishay Gal-Yam","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-11-27T18:25:06Z","title":"Observational and Physical Classification of Supernovae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.09353","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:c7227560e4d215690357997c5b75998dadf2d0e2f5c1474170fe30e54b6d1405","target":"record","created_at":"2026-05-18T00:17:44Z","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":"04e7034f8703fbca7e01b707caa49b68f7cee81944fed790f6a09cab6cbc0735","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-11-27T18:25:06Z","title_canon_sha256":"c791f6fa1b2caea03aa5256d52fd7db366cafe13d702c5024629df3d19f88419"},"schema_version":"1.0","source":{"id":"1611.09353","kind":"arxiv","version":1}},"canonical_sha256":"7a0408da08b3968b357ed26d3387177509dd62a60c00e0e4a5d285b4ffa34c59","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a0408da08b3968b357ed26d3387177509dd62a60c00e0e4a5d285b4ffa34c59","first_computed_at":"2026-05-18T00:17:44.260622Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:17:44.260622Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ITTh74VPms0joepjmV2hRwNzV2Vfakb86Zl1A9EYCe3Ua/f4wnnL1ves0LarS5dvn7itTO32uMIZ28ucrUNXCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:17:44.261339Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.09353","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7227560e4d215690357997c5b75998dadf2d0e2f5c1474170fe30e54b6d1405","sha256:aba2d6723b9e489eeda6864761a5d474de7c08b076aeb640019ed0a03f859cf7"],"state_sha256":"787d1d5e8400b83d65f2cd80d2e2c08632f32ad86082dc0778a9f29e4909bd8b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tv4AAtjA04FQLgRd8Ws7zBD3E1gxCdS0VpUJl17XMK9jnXBINzY6NT1w/Iv2UuVDbCDwRhWuqbINocydQppGAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T09:42:00.078954Z","bundle_sha256":"f93b3f8993e213f53a9266a384ccf58e2f4592e6e8ccaab6b6cfa77d27d1db70"}}