{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:W56TWLHXL65FLCMPUX7R3QTTSV","short_pith_number":"pith:W56TWLHX","canonical_record":{"source":{"id":"2603.24758","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-03-25T19:29:58Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"6d474107647f7ed8ed5e6b603a9062f10e0f8ccc683a9ee27824dcdff0a327ae","abstract_canon_sha256":"47b20a13de7d4be576ecd6924552bbca394f11d2ec86b35a5b9c7c55afff9ae7"},"schema_version":"1.0"},"canonical_sha256":"b77d3b2cf75fba55898fa5ff1dc2739561e4e2f5ec58737c864684c917e8be81","source":{"kind":"arxiv","id":"2603.24758","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2603.24758","created_at":"2026-05-20T00:00:37Z"},{"alias_kind":"arxiv_version","alias_value":"2603.24758v1","created_at":"2026-05-20T00:00:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.24758","created_at":"2026-05-20T00:00:37Z"},{"alias_kind":"pith_short_12","alias_value":"W56TWLHXL65F","created_at":"2026-05-20T00:00:37Z"},{"alias_kind":"pith_short_16","alias_value":"W56TWLHXL65FLCMP","created_at":"2026-05-20T00:00:37Z"},{"alias_kind":"pith_short_8","alias_value":"W56TWLHX","created_at":"2026-05-20T00:00:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:W56TWLHXL65FLCMPUX7R3QTTSV","target":"record","payload":{"canonical_record":{"source":{"id":"2603.24758","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-03-25T19:29:58Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"6d474107647f7ed8ed5e6b603a9062f10e0f8ccc683a9ee27824dcdff0a327ae","abstract_canon_sha256":"47b20a13de7d4be576ecd6924552bbca394f11d2ec86b35a5b9c7c55afff9ae7"},"schema_version":"1.0"},"canonical_sha256":"b77d3b2cf75fba55898fa5ff1dc2739561e4e2f5ec58737c864684c917e8be81","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:00:37.036012Z","signature_b64":"5h9CmEwoEX8LGeOKExtbL3KFpyGMKAw0Cnp9QBNoqcyz7+7IxTLGrS8GEx9iL4xCk+Lz/JfcljVpkp+m9YRFBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b77d3b2cf75fba55898fa5ff1dc2739561e4e2f5ec58737c864684c917e8be81","last_reissued_at":"2026-05-20T00:00:37.035240Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:00:37.035240Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2603.24758","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":"2026-05-20T00:00:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2N+XlG0f75r9J3W5wghtqz+jWDhHNtomUNU7Ey8iDh/rOjLPHr+oXPgJpSGiWZmNaI5SO0Cyww/6mmbUpUKzDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T17:18:20.622551Z"},"content_sha256":"08bdacebfa511d1ce756c751f0270f42504504ac4d5496692a441bb934476165","schema_version":"1.0","event_id":"sha256:08bdacebfa511d1ce756c751f0270f42504504ac4d5496692a441bb934476165"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:W56TWLHXL65FLCMPUX7R3QTTSV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Production of heavy $\\alpha$-elements and $^{44}$Ti in Cas A: comparison to abundances from 1D core-collapse supernova models and evidence for Carbon-Oxygen shell mergers","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Carbon-oxygen shell mergers produce the high argon-to-neon ratios and part of the titanium-44 observed in Cassiopeia A.","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Chris L Fryer, Lorenzo Roberti, Luca Boccioli, Marco Pignatari, Samar Safi-Harb, Samuel Jones","submitted_at":"2026-03-25T19:29:58Z","abstract_excerpt":"The merger between the carbon (C) and oxygen (O) shells hours to days before the collapse of a massive star significantly changes its nucleosynthesis, which is reflected in the elemental ratios observed in supernova remnants (SNRs). We present a nucleosynthesis study of $^{44}$Ti production in core-collapse supernovae (CCSNe), highlighting large silicon (Si), sulfur (S), calcium (Ca), and, most importantly, argon (Ar) to neon (Ne) ratios as diagnostics for carbon-oxygen (C--O) shell mergers. We compare yields from eight different sets of CCSNe models to observations of Cassiopeia A (Cas A), an"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"C--O shell mergers are consistently the models that best match X-ray and infrared observations of Cas A, producing high Ar/Ne ratios (≳0.1) due to 20Ne depletion and production of 36Ar and 38Ar, with up to 20-30% of 44Ti located outside the reverse shock.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the 1D core-collapse supernova models used accurately capture the nucleosynthesis changes caused by C-O shell mergers without significant contributions from multidimensional effects or post-explosion mixing.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Core-collapse supernova models including C-O shell mergers best match observed elemental ratios in Cas A, indicating mergers occur and contribute up to 20-30% of 44Ti outside the reverse shock.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Carbon-oxygen shell mergers produce the high argon-to-neon ratios and part of the titanium-44 observed in Cassiopeia A.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"9dbf34f55f3cc43a1aadbe98746cd9ac33cdeec27306ced4bd2b9685aeeb979a"},"source":{"id":"2603.24758","kind":"arxiv","version":1},"verdict":{"id":"ac77eb81-645b-4978-9faf-8db0efa75f9a","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T17:34:52.603750Z","strongest_claim":"C--O shell mergers are consistently the models that best match X-ray and infrared observations of Cas A, producing high Ar/Ne ratios (≳0.1) due to 20Ne depletion and production of 36Ar and 38Ar, with up to 20-30% of 44Ti located outside the reverse shock.","one_line_summary":"Core-collapse supernova models including C-O shell mergers best match observed elemental ratios in Cas A, indicating mergers occur and contribute up to 20-30% of 44Ti outside the reverse shock.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the 1D core-collapse supernova models used accurately capture the nucleosynthesis changes caused by C-O shell mergers without significant contributions from multidimensional effects or post-explosion mixing.","pith_extraction_headline":"Carbon-oxygen shell mergers produce the high argon-to-neon ratios and part of the titanium-44 observed in Cassiopeia A."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2603.24758/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":63,"sample":[{"doi":"10.1093/mnras/stz2952","year":2020,"title":"2020, Monthly Notices of the Royal Astronomical Society, 491, 972, doi: 10.1093/mnras/stz2952","work_id":"1a665ece-19aa-417c-b810-1f201c52c42c","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.3847/1538-4357/ab64f8","year":2019,"title":"2019, The Astrophysical Journal, 890, 35, doi: 10.3847/1538-4357/ab64f8","work_id":"1a312d3f-9501-47bf-88da-9f14756b0f04","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1088/0004-637x/786/1/55","year":2014,"title":"G., Dwek, E., Kober, G., Rho, J., & Hwang, U","work_id":"b2ec0a5c-740d-4bc1-9a4f-c6acd4e0b05d","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1086/150157","year":1969,"title":"Arnett, W. D. 1969, The Astrophysical Journal, 157, 1369, doi: 10.1086/150157","work_id":"438d9893-19dd-4324-b4f2-dcf2aa6893c7","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1038/s41550-025-02714-4","year":2025,"title":"2025, Nature Astronomy, 10, 144, doi: 10.1038/s41550-025-02714-4","work_id":"6149038f-cb38-4861-abc7-08b763ab67fe","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":63,"snapshot_sha256":"dbfcb38545cb518b8815b10c014f8ed3280e42adcc5b984ee766358ca4a367c3","internal_anchors":2},"formal_canon":{"evidence_count":2,"snapshot_sha256":"9abaeeb651bf00e35e5b1a2e817747cca36f13071592b688a331ed0d5cb7e332"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":"ac77eb81-645b-4978-9faf-8db0efa75f9a"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-20T00:00:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sbCNhDyGPEzzeQ1KgObwnJ/U3fCuMwrj7M1dz3mN6nzsFWdxLDfxudfuUUnrx1qVfWiwZjg5FjaxYSlbv9a/Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T17:18:20.623751Z"},"content_sha256":"1d9241db6e1624995c5c5a91577db618e10d9de5259adda2a0d726e47bbae05e","schema_version":"1.0","event_id":"sha256:1d9241db6e1624995c5c5a91577db618e10d9de5259adda2a0d726e47bbae05e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W56TWLHXL65FLCMPUX7R3QTTSV/bundle.json","state_url":"https://pith.science/pith/W56TWLHXL65FLCMPUX7R3QTTSV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W56TWLHXL65FLCMPUX7R3QTTSV/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":"2026-05-23T17:18:20Z","links":{"resolver":"https://pith.science/pith/W56TWLHXL65FLCMPUX7R3QTTSV","bundle":"https://pith.science/pith/W56TWLHXL65FLCMPUX7R3QTTSV/bundle.json","state":"https://pith.science/pith/W56TWLHXL65FLCMPUX7R3QTTSV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W56TWLHXL65FLCMPUX7R3QTTSV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:W56TWLHXL65FLCMPUX7R3QTTSV","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":"47b20a13de7d4be576ecd6924552bbca394f11d2ec86b35a5b9c7c55afff9ae7","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-03-25T19:29:58Z","title_canon_sha256":"6d474107647f7ed8ed5e6b603a9062f10e0f8ccc683a9ee27824dcdff0a327ae"},"schema_version":"1.0","source":{"id":"2603.24758","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2603.24758","created_at":"2026-05-20T00:00:37Z"},{"alias_kind":"arxiv_version","alias_value":"2603.24758v1","created_at":"2026-05-20T00:00:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2603.24758","created_at":"2026-05-20T00:00:37Z"},{"alias_kind":"pith_short_12","alias_value":"W56TWLHXL65F","created_at":"2026-05-20T00:00:37Z"},{"alias_kind":"pith_short_16","alias_value":"W56TWLHXL65FLCMP","created_at":"2026-05-20T00:00:37Z"},{"alias_kind":"pith_short_8","alias_value":"W56TWLHX","created_at":"2026-05-20T00:00:37Z"}],"graph_snapshots":[{"event_id":"sha256:1d9241db6e1624995c5c5a91577db618e10d9de5259adda2a0d726e47bbae05e","target":"graph","created_at":"2026-05-20T00:00:37Z","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":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"C--O shell mergers are consistently the models that best match X-ray and infrared observations of Cas A, producing high Ar/Ne ratios (≳0.1) due to 20Ne depletion and production of 36Ar and 38Ar, with up to 20-30% of 44Ti located outside the reverse shock."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"That the 1D core-collapse supernova models used accurately capture the nucleosynthesis changes caused by C-O shell mergers without significant contributions from multidimensional effects or post-explosion mixing."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"Core-collapse supernova models including C-O shell mergers best match observed elemental ratios in Cas A, indicating mergers occur and contribute up to 20-30% of 44Ti outside the reverse shock."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"Carbon-oxygen shell mergers produce the high argon-to-neon ratios and part of the titanium-44 observed in Cassiopeia A."}],"snapshot_sha256":"9dbf34f55f3cc43a1aadbe98746cd9ac33cdeec27306ced4bd2b9685aeeb979a"},"formal_canon":{"evidence_count":2,"snapshot_sha256":"9abaeeb651bf00e35e5b1a2e817747cca36f13071592b688a331ed0d5cb7e332"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2603.24758/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The merger between the carbon (C) and oxygen (O) shells hours to days before the collapse of a massive star significantly changes its nucleosynthesis, which is reflected in the elemental ratios observed in supernova remnants (SNRs). We present a nucleosynthesis study of $^{44}$Ti production in core-collapse supernovae (CCSNe), highlighting large silicon (Si), sulfur (S), calcium (Ca), and, most importantly, argon (Ar) to neon (Ne) ratios as diagnostics for carbon-oxygen (C--O) shell mergers. We compare yields from eight different sets of CCSNe models to observations of Cassiopeia A (Cas A), an","authors_text":"Chris L Fryer, Lorenzo Roberti, Luca Boccioli, Marco Pignatari, Samar Safi-Harb, Samuel Jones","cross_cats":["astro-ph.GA","astro-ph.SR"],"headline":"Carbon-oxygen shell mergers produce the high argon-to-neon ratios and part of the titanium-44 observed in Cassiopeia A.","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-03-25T19:29:58Z","title":"Production of heavy $\\alpha$-elements and $^{44}$Ti in Cas A: comparison to abundances from 1D core-collapse supernova models and evidence for Carbon-Oxygen shell mergers"},"references":{"count":63,"internal_anchors":2,"resolved_work":63,"sample":[{"cited_arxiv_id":"","doi":"10.1093/mnras/stz2952","is_internal_anchor":false,"ref_index":1,"title":"2020, Monthly Notices of the Royal Astronomical Society, 491, 972, doi: 10.1093/mnras/stz2952","work_id":"1a665ece-19aa-417c-b810-1f201c52c42c","year":2020},{"cited_arxiv_id":"","doi":"10.3847/1538-4357/ab64f8","is_internal_anchor":false,"ref_index":2,"title":"2019, The Astrophysical Journal, 890, 35, doi: 10.3847/1538-4357/ab64f8","work_id":"1a312d3f-9501-47bf-88da-9f14756b0f04","year":2019},{"cited_arxiv_id":"","doi":"10.1088/0004-637x/786/1/55","is_internal_anchor":false,"ref_index":3,"title":"G., Dwek, E., Kober, G., Rho, J., & Hwang, U","work_id":"b2ec0a5c-740d-4bc1-9a4f-c6acd4e0b05d","year":2014},{"cited_arxiv_id":"","doi":"10.1086/150157","is_internal_anchor":false,"ref_index":4,"title":"Arnett, W. D. 1969, The Astrophysical Journal, 157, 1369, doi: 10.1086/150157","work_id":"438d9893-19dd-4324-b4f2-dcf2aa6893c7","year":1969},{"cited_arxiv_id":"","doi":"10.1038/s41550-025-02714-4","is_internal_anchor":false,"ref_index":5,"title":"2025, Nature Astronomy, 10, 144, doi: 10.1038/s41550-025-02714-4","work_id":"6149038f-cb38-4861-abc7-08b763ab67fe","year":2025}],"snapshot_sha256":"dbfcb38545cb518b8815b10c014f8ed3280e42adcc5b984ee766358ca4a367c3"},"source":{"id":"2603.24758","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-19T17:34:52.603750Z","id":"ac77eb81-645b-4978-9faf-8db0efa75f9a","model_set":{"reader":"grok-4.3"},"one_line_summary":"Core-collapse supernova models including C-O shell mergers best match observed elemental ratios in Cas A, indicating mergers occur and contribute up to 20-30% of 44Ti outside the reverse shock.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"Carbon-oxygen shell mergers produce the high argon-to-neon ratios and part of the titanium-44 observed in Cassiopeia A.","strongest_claim":"C--O shell mergers are consistently the models that best match X-ray and infrared observations of Cas A, producing high Ar/Ne ratios (≳0.1) due to 20Ne depletion and production of 36Ar and 38Ar, with up to 20-30% of 44Ti located outside the reverse shock.","weakest_assumption":"That the 1D core-collapse supernova models used accurately capture the nucleosynthesis changes caused by C-O shell mergers without significant contributions from multidimensional effects or post-explosion mixing."}},"verdict_id":"ac77eb81-645b-4978-9faf-8db0efa75f9a"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:08bdacebfa511d1ce756c751f0270f42504504ac4d5496692a441bb934476165","target":"record","created_at":"2026-05-20T00:00:37Z","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":"47b20a13de7d4be576ecd6924552bbca394f11d2ec86b35a5b9c7c55afff9ae7","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-03-25T19:29:58Z","title_canon_sha256":"6d474107647f7ed8ed5e6b603a9062f10e0f8ccc683a9ee27824dcdff0a327ae"},"schema_version":"1.0","source":{"id":"2603.24758","kind":"arxiv","version":1}},"canonical_sha256":"b77d3b2cf75fba55898fa5ff1dc2739561e4e2f5ec58737c864684c917e8be81","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b77d3b2cf75fba55898fa5ff1dc2739561e4e2f5ec58737c864684c917e8be81","first_computed_at":"2026-05-20T00:00:37.035240Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:00:37.035240Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5h9CmEwoEX8LGeOKExtbL3KFpyGMKAw0Cnp9QBNoqcyz7+7IxTLGrS8GEx9iL4xCk+Lz/JfcljVpkp+m9YRFBA==","signature_status":"signed_v1","signed_at":"2026-05-20T00:00:37.036012Z","signed_message":"canonical_sha256_bytes"},"source_id":"2603.24758","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:08bdacebfa511d1ce756c751f0270f42504504ac4d5496692a441bb934476165","sha256:1d9241db6e1624995c5c5a91577db618e10d9de5259adda2a0d726e47bbae05e"],"state_sha256":"f6dc21027a30b4e6ca6555405b5bcce3e317143a189334b0ac5d045f39c37ce8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GwlNLXmuIbJ3xP01OdnOo1kSqLa81E+7AA/xsKsAmARyiP5JP0wH2JwPt+4xpckDRdGD/ANddhOVd/LnAiwMDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T17:18:20.627157Z","bundle_sha256":"ea70f188bb6d9e7bbf966201322c4cfb8131e3dd8d12f2c68cfe96e6ebdebd51"}}