{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:C5HZIFAHOAQ6RBQYWXN662JPKY","short_pith_number":"pith:C5HZIFAH","canonical_record":{"source":{"id":"2004.14419","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-04-29T18:31:54Z","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"d654d652f9a1cc424caedf0bd41864f9d0b834489cd4bb34cea3c0ed36eb4231","abstract_canon_sha256":"5f79c7f73cc19fc18304f67fc127e0f1565f04f8369447e2304065fe5d3c23c6"},"schema_version":"1.0"},"canonical_sha256":"174f9414077021e88618b5dbef692f560a7c1cd8acc01734737494854f884932","source":{"kind":"arxiv","id":"2004.14419","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.14419","created_at":"2026-07-05T01:04:24Z"},{"alias_kind":"arxiv_version","alias_value":"2004.14419v1","created_at":"2026-07-05T01:04:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.14419","created_at":"2026-07-05T01:04:24Z"},{"alias_kind":"pith_short_12","alias_value":"C5HZIFAHOAQ6","created_at":"2026-07-05T01:04:24Z"},{"alias_kind":"pith_short_16","alias_value":"C5HZIFAHOAQ6RBQY","created_at":"2026-07-05T01:04:24Z"},{"alias_kind":"pith_short_8","alias_value":"C5HZIFAH","created_at":"2026-07-05T01:04:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:C5HZIFAHOAQ6RBQYWXN662JPKY","target":"record","payload":{"canonical_record":{"source":{"id":"2004.14419","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-04-29T18:31:54Z","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"d654d652f9a1cc424caedf0bd41864f9d0b834489cd4bb34cea3c0ed36eb4231","abstract_canon_sha256":"5f79c7f73cc19fc18304f67fc127e0f1565f04f8369447e2304065fe5d3c23c6"},"schema_version":"1.0"},"canonical_sha256":"174f9414077021e88618b5dbef692f560a7c1cd8acc01734737494854f884932","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:04:24.069477Z","signature_b64":"EIOjK2kGlwsZL1XSBpYQex5RNvhu1UQ2gah9cKNKgepmpnEwuA+QjQ4BrxOWjogAciV0CP7IY6/GWUthz2BiDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"174f9414077021e88618b5dbef692f560a7c1cd8acc01734737494854f884932","last_reissued_at":"2026-07-05T01:04:24.069080Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:04:24.069080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.14419","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":"2026-07-05T01:04:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ou7X5QWCuAO6w3mDnJlzCkugXQBGfpDzpwpGrEMDwpNF2KdJmycQM56EeYfSGnguo23qszMZIQtyA4pEc5fSAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T21:24:30.845508Z"},"content_sha256":"a77146d57760ff3c5500360995057d23f95f39bfad886817d178ec61c45959c9","schema_version":"1.0","event_id":"sha256:a77146d57760ff3c5500360995057d23f95f39bfad886817d178ec61c45959c9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:C5HZIFAHOAQ6RBQYWXN662JPKY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Type IIP Supernova Progenitors III: Blue to Red Supergiant Ratio in Low Metallicity Models with Convective Overshoot","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Adarsh Raghu, Alak Ray, Gururaj A. Wagle","submitted_at":"2020-04-29T18:31:54Z","abstract_excerpt":"The distribution of stars in the Hertzsprung Russell diagram (HRD) for a stellar conglomeration represents a snapshot of its evolving stellar population. Some of the supergiant stars may transit the HRD from blue to red and then again to blue during their late evolutionary stages, as exemplified by the progenitor of SN 1987A. Others may transit a given part of the HRD more than twice in a \"blue loop\" and end up as red supergiants before they explode. Since stars in blue loops spend a considerable part of their lives there, these stages may change the relative number of modeled supergiants in t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.14419","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2004.14419/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":"2026-07-05T01:04:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XVwgLaHExnBxK4aA0eHX98JbQUG+8aTzFy0D2QfBuSnu+XDI21ki28Y6Wm1OaQc+jTBan4At8bF2lx9bTrESAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T21:24:30.846184Z"},"content_sha256":"93a316db2cc46fe826d960a13d68aac0809e42b93266d5cf5ae31adafc6bd293","schema_version":"1.0","event_id":"sha256:93a316db2cc46fe826d960a13d68aac0809e42b93266d5cf5ae31adafc6bd293"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C5HZIFAHOAQ6RBQYWXN662JPKY/bundle.json","state_url":"https://pith.science/pith/C5HZIFAHOAQ6RBQYWXN662JPKY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C5HZIFAHOAQ6RBQYWXN662JPKY/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":"2026-08-18T21:24:30Z","links":{"resolver":"https://pith.science/pith/C5HZIFAHOAQ6RBQYWXN662JPKY","bundle":"https://pith.science/pith/C5HZIFAHOAQ6RBQYWXN662JPKY/bundle.json","state":"https://pith.science/pith/C5HZIFAHOAQ6RBQYWXN662JPKY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C5HZIFAHOAQ6RBQYWXN662JPKY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:C5HZIFAHOAQ6RBQYWXN662JPKY","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":"5f79c7f73cc19fc18304f67fc127e0f1565f04f8369447e2304065fe5d3c23c6","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-04-29T18:31:54Z","title_canon_sha256":"d654d652f9a1cc424caedf0bd41864f9d0b834489cd4bb34cea3c0ed36eb4231"},"schema_version":"1.0","source":{"id":"2004.14419","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.14419","created_at":"2026-07-05T01:04:24Z"},{"alias_kind":"arxiv_version","alias_value":"2004.14419v1","created_at":"2026-07-05T01:04:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.14419","created_at":"2026-07-05T01:04:24Z"},{"alias_kind":"pith_short_12","alias_value":"C5HZIFAHOAQ6","created_at":"2026-07-05T01:04:24Z"},{"alias_kind":"pith_short_16","alias_value":"C5HZIFAHOAQ6RBQY","created_at":"2026-07-05T01:04:24Z"},{"alias_kind":"pith_short_8","alias_value":"C5HZIFAH","created_at":"2026-07-05T01:04:24Z"}],"graph_snapshots":[{"event_id":"sha256:93a316db2cc46fe826d960a13d68aac0809e42b93266d5cf5ae31adafc6bd293","target":"graph","created_at":"2026-07-05T01:04:24Z","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/2004.14419/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The distribution of stars in the Hertzsprung Russell diagram (HRD) for a stellar conglomeration represents a snapshot of its evolving stellar population. Some of the supergiant stars may transit the HRD from blue to red and then again to blue during their late evolutionary stages, as exemplified by the progenitor of SN 1987A. Others may transit a given part of the HRD more than twice in a \"blue loop\" and end up as red supergiants before they explode. Since stars in blue loops spend a considerable part of their lives there, these stages may change the relative number of modeled supergiants in t","authors_text":"Adarsh Raghu, Alak Ray, Gururaj A. Wagle","cross_cats":["astro-ph.GA","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-04-29T18:31:54Z","title":"Type IIP Supernova Progenitors III: Blue to Red Supergiant Ratio in Low Metallicity Models with Convective Overshoot"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.14419","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:a77146d57760ff3c5500360995057d23f95f39bfad886817d178ec61c45959c9","target":"record","created_at":"2026-07-05T01:04:24Z","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":"5f79c7f73cc19fc18304f67fc127e0f1565f04f8369447e2304065fe5d3c23c6","cross_cats_sorted":["astro-ph.GA","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-04-29T18:31:54Z","title_canon_sha256":"d654d652f9a1cc424caedf0bd41864f9d0b834489cd4bb34cea3c0ed36eb4231"},"schema_version":"1.0","source":{"id":"2004.14419","kind":"arxiv","version":1}},"canonical_sha256":"174f9414077021e88618b5dbef692f560a7c1cd8acc01734737494854f884932","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"174f9414077021e88618b5dbef692f560a7c1cd8acc01734737494854f884932","first_computed_at":"2026-07-05T01:04:24.069080Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:04:24.069080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EIOjK2kGlwsZL1XSBpYQex5RNvhu1UQ2gah9cKNKgepmpnEwuA+QjQ4BrxOWjogAciV0CP7IY6/GWUthz2BiDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:04:24.069477Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.14419","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a77146d57760ff3c5500360995057d23f95f39bfad886817d178ec61c45959c9","sha256:93a316db2cc46fe826d960a13d68aac0809e42b93266d5cf5ae31adafc6bd293"],"state_sha256":"a1e2e5db95978c36d3967c9f93097f578f8b0845704e3b5ab9948f4dab267c90"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kIYMeua4d+ZtKRpk150TsRHPH4ia59UgXREf88QOOzoZC4lWTKW5i1pXX5luKeeLhYE55fThInoniP159581AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T21:24:30.851905Z","bundle_sha256":"4a96ed86377f753557d642028608b709dbcb73ce766a170a2588418303e69be3"}}