{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:JQMMPMW3XFPHJZNSEF7YBIUBKN","short_pith_number":"pith:JQMMPMW3","canonical_record":{"source":{"id":"2506.08099","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-06-09T18:01:02Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"b361547c214d1920fc22c35495251258c64c235daf7e07b672a8292fac8be900","abstract_canon_sha256":"5744aa68dd99472d7aeb7cb263c7bcf368839e50fdce32da56aa804092e26974"},"schema_version":"1.0"},"canonical_sha256":"4c18c7b2dbb95e74e5b2217f80a2815361ed3ef356b72fcdcd3d8aab94298450","source":{"kind":"arxiv","id":"2506.08099","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.08099","created_at":"2026-07-05T11:18:44Z"},{"alias_kind":"arxiv_version","alias_value":"2506.08099v1","created_at":"2026-07-05T11:18:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.08099","created_at":"2026-07-05T11:18:44Z"},{"alias_kind":"pith_short_12","alias_value":"JQMMPMW3XFPH","created_at":"2026-07-05T11:18:44Z"},{"alias_kind":"pith_short_16","alias_value":"JQMMPMW3XFPHJZNS","created_at":"2026-07-05T11:18:44Z"},{"alias_kind":"pith_short_8","alias_value":"JQMMPMW3","created_at":"2026-07-05T11:18:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:JQMMPMW3XFPHJZNSEF7YBIUBKN","target":"record","payload":{"canonical_record":{"source":{"id":"2506.08099","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-06-09T18:01:02Z","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"b361547c214d1920fc22c35495251258c64c235daf7e07b672a8292fac8be900","abstract_canon_sha256":"5744aa68dd99472d7aeb7cb263c7bcf368839e50fdce32da56aa804092e26974"},"schema_version":"1.0"},"canonical_sha256":"4c18c7b2dbb95e74e5b2217f80a2815361ed3ef356b72fcdcd3d8aab94298450","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:18:44.837371Z","signature_b64":"GTJiQ6ylN9e46YBIZ4kRR+zvDerzGTXSkak1bT6tDu7C/yWaJAzlAMTPquSkR8uwKMJZU2xpEeE/awM4DF1rAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4c18c7b2dbb95e74e5b2217f80a2815361ed3ef356b72fcdcd3d8aab94298450","last_reissued_at":"2026-07-05T11:18:44.836912Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:18:44.836912Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.08099","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":"2026-07-05T11:18:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YirqgMsJAdVPrKNrgOhKjsivqZpdOI3w2eWs7KKax5KCKFOBXoVAHmREjEyifF/eVQ5F82dPzFDlxLOOh4cNDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T15:44:27.875328Z"},"content_sha256":"16daca52e82b1b7507fbe4b357b00690c96517008e2e9053a05c19807c75dadf","schema_version":"1.0","event_id":"sha256:16daca52e82b1b7507fbe4b357b00690c96517008e2e9053a05c19807c75dadf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:JQMMPMW3XFPHJZNSEF7YBIUBKN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An environmental analysis of supernova iPTF13bvn with HST and MUSE","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Adam J. Singleton, Justyn R. Maund, Ning-Chen Sun","submitted_at":"2025-06-09T18:01:02Z","abstract_excerpt":"Searches for supernovae (SNe) progenitors have relied on a direct detection of the star in fortuitous pre-explosion images. We propose an alternative method, using a combination of photometric stellar population fitting alongside integral-field-unit (IFU) spectroscopic analysis of the ionised gas to fully explore the SN environment and constrain the progenitor properties. Isochrone fitting of HST/WFC3 observations reveals the environment of iPTF13bvn contains two stellar populations with unique age ($\\tau=\\log{t [years]}$) and extinction ($A_V$) values, with the closest agreement found between"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.08099","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/2506.08099/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":"2026-07-05T11:18:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zg8eQGaCaWkC0XGAooeW5O/5GotirZ6Gd8nXmpq7L2KxjNb556pnxK//iSxSjcv+1VfFxCzayxfXVOnbv2c0BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T15:44:27.876223Z"},"content_sha256":"f12e8ee2cfa697ba1cc18a81c39c48a62c9a9a73e74fb73a21f75bee50dc0134","schema_version":"1.0","event_id":"sha256:f12e8ee2cfa697ba1cc18a81c39c48a62c9a9a73e74fb73a21f75bee50dc0134"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JQMMPMW3XFPHJZNSEF7YBIUBKN/bundle.json","state_url":"https://pith.science/pith/JQMMPMW3XFPHJZNSEF7YBIUBKN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JQMMPMW3XFPHJZNSEF7YBIUBKN/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":"2026-08-05T15:44:27Z","links":{"resolver":"https://pith.science/pith/JQMMPMW3XFPHJZNSEF7YBIUBKN","bundle":"https://pith.science/pith/JQMMPMW3XFPHJZNSEF7YBIUBKN/bundle.json","state":"https://pith.science/pith/JQMMPMW3XFPHJZNSEF7YBIUBKN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JQMMPMW3XFPHJZNSEF7YBIUBKN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:JQMMPMW3XFPHJZNSEF7YBIUBKN","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":"5744aa68dd99472d7aeb7cb263c7bcf368839e50fdce32da56aa804092e26974","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-06-09T18:01:02Z","title_canon_sha256":"b361547c214d1920fc22c35495251258c64c235daf7e07b672a8292fac8be900"},"schema_version":"1.0","source":{"id":"2506.08099","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.08099","created_at":"2026-07-05T11:18:44Z"},{"alias_kind":"arxiv_version","alias_value":"2506.08099v1","created_at":"2026-07-05T11:18:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.08099","created_at":"2026-07-05T11:18:44Z"},{"alias_kind":"pith_short_12","alias_value":"JQMMPMW3XFPH","created_at":"2026-07-05T11:18:44Z"},{"alias_kind":"pith_short_16","alias_value":"JQMMPMW3XFPHJZNS","created_at":"2026-07-05T11:18:44Z"},{"alias_kind":"pith_short_8","alias_value":"JQMMPMW3","created_at":"2026-07-05T11:18:44Z"}],"graph_snapshots":[{"event_id":"sha256:f12e8ee2cfa697ba1cc18a81c39c48a62c9a9a73e74fb73a21f75bee50dc0134","target":"graph","created_at":"2026-07-05T11:18:44Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2506.08099/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Searches for supernovae (SNe) progenitors have relied on a direct detection of the star in fortuitous pre-explosion images. We propose an alternative method, using a combination of photometric stellar population fitting alongside integral-field-unit (IFU) spectroscopic analysis of the ionised gas to fully explore the SN environment and constrain the progenitor properties. Isochrone fitting of HST/WFC3 observations reveals the environment of iPTF13bvn contains two stellar populations with unique age ($\\tau=\\log{t [years]}$) and extinction ($A_V$) values, with the closest agreement found between","authors_text":"Adam J. Singleton, Justyn R. Maund, Ning-Chen Sun","cross_cats":["astro-ph.GA","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-06-09T18:01:02Z","title":"An environmental analysis of supernova iPTF13bvn with HST and MUSE"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.08099","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":"sha256:16daca52e82b1b7507fbe4b357b00690c96517008e2e9053a05c19807c75dadf","target":"record","created_at":"2026-07-05T11:18:44Z","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":"5744aa68dd99472d7aeb7cb263c7bcf368839e50fdce32da56aa804092e26974","cross_cats_sorted":["astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-06-09T18:01:02Z","title_canon_sha256":"b361547c214d1920fc22c35495251258c64c235daf7e07b672a8292fac8be900"},"schema_version":"1.0","source":{"id":"2506.08099","kind":"arxiv","version":1}},"canonical_sha256":"4c18c7b2dbb95e74e5b2217f80a2815361ed3ef356b72fcdcd3d8aab94298450","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4c18c7b2dbb95e74e5b2217f80a2815361ed3ef356b72fcdcd3d8aab94298450","first_computed_at":"2026-07-05T11:18:44.836912Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:18:44.836912Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GTJiQ6ylN9e46YBIZ4kRR+zvDerzGTXSkak1bT6tDu7C/yWaJAzlAMTPquSkR8uwKMJZU2xpEeE/awM4DF1rAw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:18:44.837371Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.08099","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:16daca52e82b1b7507fbe4b357b00690c96517008e2e9053a05c19807c75dadf","sha256:f12e8ee2cfa697ba1cc18a81c39c48a62c9a9a73e74fb73a21f75bee50dc0134"],"state_sha256":"a1a72137fb61968e15ae1d792a402605237f0dba13530a8e645ab16247cf6213"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T+K0AIaQO2n6o4ns+WWKQsWf+MSzGiwev1PWwXBaXkcGGk64vatiC6TrG1r9RQpgr5gWF9Z5wTAsS/jE94kpCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T15:44:27.880948Z","bundle_sha256":"f4e3d11e934066e92aee1d8fcf7d04b71010a506c47d22270a06f4b0b2a0b8ab"}}