{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:DC4EVQMAMQF4FRBFHJVOPT5USA","short_pith_number":"pith:DC4EVQMA","canonical_record":{"source":{"id":"2507.21307","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-07-28T20:00:42Z","cross_cats_sorted":[],"title_canon_sha256":"1c31272007e66cf115d75584813e2a8f9893afe78148f8813c45960db08173c6","abstract_canon_sha256":"7325d9166c73a686ab6cca7a56260b697a836bad039c158698b6eb8fb2776168"},"schema_version":"1.0"},"canonical_sha256":"18b84ac180640bc2c4253a6ae7cfb4901eca48c8376b3738dc91f62920be2962","source":{"kind":"arxiv","id":"2507.21307","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.21307","created_at":"2026-07-05T12:09:21Z"},{"alias_kind":"arxiv_version","alias_value":"2507.21307v1","created_at":"2026-07-05T12:09:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.21307","created_at":"2026-07-05T12:09:21Z"},{"alias_kind":"pith_short_12","alias_value":"DC4EVQMAMQF4","created_at":"2026-07-05T12:09:21Z"},{"alias_kind":"pith_short_16","alias_value":"DC4EVQMAMQF4FRBF","created_at":"2026-07-05T12:09:21Z"},{"alias_kind":"pith_short_8","alias_value":"DC4EVQMA","created_at":"2026-07-05T12:09:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:DC4EVQMAMQF4FRBFHJVOPT5USA","target":"record","payload":{"canonical_record":{"source":{"id":"2507.21307","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-07-28T20:00:42Z","cross_cats_sorted":[],"title_canon_sha256":"1c31272007e66cf115d75584813e2a8f9893afe78148f8813c45960db08173c6","abstract_canon_sha256":"7325d9166c73a686ab6cca7a56260b697a836bad039c158698b6eb8fb2776168"},"schema_version":"1.0"},"canonical_sha256":"18b84ac180640bc2c4253a6ae7cfb4901eca48c8376b3738dc91f62920be2962","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:09:21.973632Z","signature_b64":"7jWv4dB3Jur8ENjfYqbUckwKKRYD97il2VU6D2D9z8ZoJ5bYldyBpEjdX8jP8Ld7dYvciNQWPThwk6vyJEr1Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"18b84ac180640bc2c4253a6ae7cfb4901eca48c8376b3738dc91f62920be2962","last_reissued_at":"2026-07-05T12:09:21.973118Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:09:21.973118Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.21307","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":"2026-07-05T12:09:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gPwWZYOfZN1wZKO3ejYFn7kFeh8Uvf/+aUicXZU8QnRsclfWPioXKhLcnDr8132+oNK8I90ksTncE6ZuYfb3Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T22:48:33.488296Z"},"content_sha256":"59b33d83dbc7b562f460c5a6fc39537bf29057209e679503ef40283703048e28","schema_version":"1.0","event_id":"sha256:59b33d83dbc7b562f460c5a6fc39537bf29057209e679503ef40283703048e28"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:DC4EVQMAMQF4FRBFHJVOPT5USA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rotational Dynamics in Pulsational Pair-Instability Supernovae: Implications for Mass-Loss and Transient Events","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Emmanouil Chatzopoulos, Nageeb Zaman, Trang N. Huynh","submitted_at":"2025-07-28T20:00:42Z","abstract_excerpt":"Pulsational pair-instability supernovae (PPISNe) are transient events occurring in progenitor stars with helium cores of approximately 32-65 solar masses, where rapid electron-positron pair production induces pressure loss, collapse, and pulsations driving episodic mass loss. The number, strength, and duration of these pulses can lead to shell collisions that produce shock-powered transients, potentially explaining some of the most luminous events, such as superluminous supernovae, and other rare transients. Rapid progenitor rotation lowers the PPISN mass threshold and influences the dynamics,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.21307","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/2507.21307/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":"2026-07-05T12:09:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wX/90VMAyRQ/7+yaEmVmINKEGtSQK7r6BmhcL5Mxjncd4TBhQXiuGwAQW/FHgpywjzPhYlVLQH8CTPfsQyIJCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T22:48:33.488794Z"},"content_sha256":"13b388b8ef056ac71bcdbb4a823d7ccf3daffc32794d1dc4f049736e689cd015","schema_version":"1.0","event_id":"sha256:13b388b8ef056ac71bcdbb4a823d7ccf3daffc32794d1dc4f049736e689cd015"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DC4EVQMAMQF4FRBFHJVOPT5USA/bundle.json","state_url":"https://pith.science/pith/DC4EVQMAMQF4FRBFHJVOPT5USA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DC4EVQMAMQF4FRBFHJVOPT5USA/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":"2026-08-06T22:48:33Z","links":{"resolver":"https://pith.science/pith/DC4EVQMAMQF4FRBFHJVOPT5USA","bundle":"https://pith.science/pith/DC4EVQMAMQF4FRBFHJVOPT5USA/bundle.json","state":"https://pith.science/pith/DC4EVQMAMQF4FRBFHJVOPT5USA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DC4EVQMAMQF4FRBFHJVOPT5USA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:DC4EVQMAMQF4FRBFHJVOPT5USA","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":"7325d9166c73a686ab6cca7a56260b697a836bad039c158698b6eb8fb2776168","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-07-28T20:00:42Z","title_canon_sha256":"1c31272007e66cf115d75584813e2a8f9893afe78148f8813c45960db08173c6"},"schema_version":"1.0","source":{"id":"2507.21307","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.21307","created_at":"2026-07-05T12:09:21Z"},{"alias_kind":"arxiv_version","alias_value":"2507.21307v1","created_at":"2026-07-05T12:09:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.21307","created_at":"2026-07-05T12:09:21Z"},{"alias_kind":"pith_short_12","alias_value":"DC4EVQMAMQF4","created_at":"2026-07-05T12:09:21Z"},{"alias_kind":"pith_short_16","alias_value":"DC4EVQMAMQF4FRBF","created_at":"2026-07-05T12:09:21Z"},{"alias_kind":"pith_short_8","alias_value":"DC4EVQMA","created_at":"2026-07-05T12:09:21Z"}],"graph_snapshots":[{"event_id":"sha256:13b388b8ef056ac71bcdbb4a823d7ccf3daffc32794d1dc4f049736e689cd015","target":"graph","created_at":"2026-07-05T12:09:21Z","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/2507.21307/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Pulsational pair-instability supernovae (PPISNe) are transient events occurring in progenitor stars with helium cores of approximately 32-65 solar masses, where rapid electron-positron pair production induces pressure loss, collapse, and pulsations driving episodic mass loss. The number, strength, and duration of these pulses can lead to shell collisions that produce shock-powered transients, potentially explaining some of the most luminous events, such as superluminous supernovae, and other rare transients. Rapid progenitor rotation lowers the PPISN mass threshold and influences the dynamics,","authors_text":"Emmanouil Chatzopoulos, Nageeb Zaman, Trang N. Huynh","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-07-28T20:00:42Z","title":"Rotational Dynamics in Pulsational Pair-Instability Supernovae: Implications for Mass-Loss and Transient Events"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.21307","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":"sha256:59b33d83dbc7b562f460c5a6fc39537bf29057209e679503ef40283703048e28","target":"record","created_at":"2026-07-05T12:09:21Z","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":"7325d9166c73a686ab6cca7a56260b697a836bad039c158698b6eb8fb2776168","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-07-28T20:00:42Z","title_canon_sha256":"1c31272007e66cf115d75584813e2a8f9893afe78148f8813c45960db08173c6"},"schema_version":"1.0","source":{"id":"2507.21307","kind":"arxiv","version":1}},"canonical_sha256":"18b84ac180640bc2c4253a6ae7cfb4901eca48c8376b3738dc91f62920be2962","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18b84ac180640bc2c4253a6ae7cfb4901eca48c8376b3738dc91f62920be2962","first_computed_at":"2026-07-05T12:09:21.973118Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:09:21.973118Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7jWv4dB3Jur8ENjfYqbUckwKKRYD97il2VU6D2D9z8ZoJ5bYldyBpEjdX8jP8Ld7dYvciNQWPThwk6vyJEr1Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T12:09:21.973632Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.21307","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59b33d83dbc7b562f460c5a6fc39537bf29057209e679503ef40283703048e28","sha256:13b388b8ef056ac71bcdbb4a823d7ccf3daffc32794d1dc4f049736e689cd015"],"state_sha256":"2b07837456d9538150e1a47771f40d5747f3cbcaf37a3d67dc5205dac4d4f228"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7cIzusL/2FUX+uFwtBplnH13FBXKTwdOJwdYPdc7p1zkKPJudWSOK1+cs32veHEF/UFVixsfxp/7CGcsB9zNAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T22:48:33.492383Z","bundle_sha256":"4e73f4a4ade642c81235f489320067334c52a6c29b6b20a132f1ddde89cbd3a2"}}