{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:UDPOCQL7ZCKNBR77ATWDY6W65W","short_pith_number":"pith:UDPOCQL7","canonical_record":{"source":{"id":"2409.07124","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-09-11T09:22:20Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"760204ec2fb07c3642acfd687f21009c3bf16b43abbc1b74f230150c90b43aec","abstract_canon_sha256":"2dae18e2f7609818a1a2ce41b362302ddaa47e71acbeb2583f819043310c987a"},"schema_version":"1.0"},"canonical_sha256":"a0dee1417fc894d0c7ff04ec3c7adeedb8b35c8e0dc2b8a5509303e11804c7c0","source":{"kind":"arxiv","id":"2409.07124","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.07124","created_at":"2026-07-05T10:25:09Z"},{"alias_kind":"arxiv_version","alias_value":"2409.07124v2","created_at":"2026-07-05T10:25:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.07124","created_at":"2026-07-05T10:25:09Z"},{"alias_kind":"pith_short_12","alias_value":"UDPOCQL7ZCKN","created_at":"2026-07-05T10:25:09Z"},{"alias_kind":"pith_short_16","alias_value":"UDPOCQL7ZCKNBR77","created_at":"2026-07-05T10:25:09Z"},{"alias_kind":"pith_short_8","alias_value":"UDPOCQL7","created_at":"2026-07-05T10:25:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:UDPOCQL7ZCKNBR77ATWDY6W65W","target":"record","payload":{"canonical_record":{"source":{"id":"2409.07124","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-09-11T09:22:20Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"760204ec2fb07c3642acfd687f21009c3bf16b43abbc1b74f230150c90b43aec","abstract_canon_sha256":"2dae18e2f7609818a1a2ce41b362302ddaa47e71acbeb2583f819043310c987a"},"schema_version":"1.0"},"canonical_sha256":"a0dee1417fc894d0c7ff04ec3c7adeedb8b35c8e0dc2b8a5509303e11804c7c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:25:09.752705Z","signature_b64":"gQuuwi2zj8hic71ZoZC/t+mRtJFcw5BT924+BpGr1ci/ZIVQJKsr/V69IOGbgvs+NDY+TKB1S1RDhSa8d/sbBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0dee1417fc894d0c7ff04ec3c7adeedb8b35c8e0dc2b8a5509303e11804c7c0","last_reissued_at":"2026-07-05T10:25:09.752030Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:25:09.752030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2409.07124","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:25:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iv5n1pCxC6Sd3fW2S3T0tXOtbKO1T/Z5pY6GkEGK2nbM9QwOwJ4Hs50/Sd4KqUGRPOvx6eGlecB4z6dj4PYrAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T10:05:17.061450Z"},"content_sha256":"2f32006e1da0bf481cab02e07c8acd1d40aeab16af2043d51819f3ce464f494f","schema_version":"1.0","event_id":"sha256:2f32006e1da0bf481cab02e07c8acd1d40aeab16af2043d51819f3ce464f494f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:UDPOCQL7ZCKNBR77ATWDY6W65W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Galactic Distribution of Supernovae and OB Associations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"M. Kachelriess, V. Mikalsen","submitted_at":"2024-09-11T09:22:20Z","abstract_excerpt":"We update and extend a previous model by Higdon and Lingenfelter for the longitudinal profile of the N\\,II intensity in the Galactic plane. The model is based on four logarithmic spiral arms, to which features like the Local Arm and local sources are added. Connecting then the N\\,II to the H\\,II emission, we use this model to determine the average spatial distribution of OBassociations in the Milky Way. Combined with a stellar mass and cluster distribution function, the model predicts the average spatial and temporal distribution of core-collapse supernovae in the Milky Way. In addition to thi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.07124","kind":"arxiv","version":2},"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/2409.07124/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":"2026-07-05T10:25:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wsV3eNevsO7O15Lub9kRnJpycSEFMk60fqHSSXsiKLQZXyMXlBcEmY1+YkXqKxX1MOjvZSPDyjScZWhHEdj3CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T10:05:17.062418Z"},"content_sha256":"3e2df73a04f0b1efdbfc8f57d9140e49343f479b17965035e77b24220c767d1a","schema_version":"1.0","event_id":"sha256:3e2df73a04f0b1efdbfc8f57d9140e49343f479b17965035e77b24220c767d1a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UDPOCQL7ZCKNBR77ATWDY6W65W/bundle.json","state_url":"https://pith.science/pith/UDPOCQL7ZCKNBR77ATWDY6W65W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UDPOCQL7ZCKNBR77ATWDY6W65W/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":"2026-08-21T10:05:17Z","links":{"resolver":"https://pith.science/pith/UDPOCQL7ZCKNBR77ATWDY6W65W","bundle":"https://pith.science/pith/UDPOCQL7ZCKNBR77ATWDY6W65W/bundle.json","state":"https://pith.science/pith/UDPOCQL7ZCKNBR77ATWDY6W65W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UDPOCQL7ZCKNBR77ATWDY6W65W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:UDPOCQL7ZCKNBR77ATWDY6W65W","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":"2dae18e2f7609818a1a2ce41b362302ddaa47e71acbeb2583f819043310c987a","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-09-11T09:22:20Z","title_canon_sha256":"760204ec2fb07c3642acfd687f21009c3bf16b43abbc1b74f230150c90b43aec"},"schema_version":"1.0","source":{"id":"2409.07124","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.07124","created_at":"2026-07-05T10:25:09Z"},{"alias_kind":"arxiv_version","alias_value":"2409.07124v2","created_at":"2026-07-05T10:25:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.07124","created_at":"2026-07-05T10:25:09Z"},{"alias_kind":"pith_short_12","alias_value":"UDPOCQL7ZCKN","created_at":"2026-07-05T10:25:09Z"},{"alias_kind":"pith_short_16","alias_value":"UDPOCQL7ZCKNBR77","created_at":"2026-07-05T10:25:09Z"},{"alias_kind":"pith_short_8","alias_value":"UDPOCQL7","created_at":"2026-07-05T10:25:09Z"}],"graph_snapshots":[{"event_id":"sha256:3e2df73a04f0b1efdbfc8f57d9140e49343f479b17965035e77b24220c767d1a","target":"graph","created_at":"2026-07-05T10:25:09Z","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/2409.07124/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We update and extend a previous model by Higdon and Lingenfelter for the longitudinal profile of the N\\,II intensity in the Galactic plane. The model is based on four logarithmic spiral arms, to which features like the Local Arm and local sources are added. Connecting then the N\\,II to the H\\,II emission, we use this model to determine the average spatial distribution of OBassociations in the Milky Way. Combined with a stellar mass and cluster distribution function, the model predicts the average spatial and temporal distribution of core-collapse supernovae in the Milky Way. In addition to thi","authors_text":"M. Kachelriess, V. Mikalsen","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-09-11T09:22:20Z","title":"Galactic Distribution of Supernovae and OB Associations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.07124","kind":"arxiv","version":2},"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":"sha256:2f32006e1da0bf481cab02e07c8acd1d40aeab16af2043d51819f3ce464f494f","target":"record","created_at":"2026-07-05T10:25:09Z","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":"2dae18e2f7609818a1a2ce41b362302ddaa47e71acbeb2583f819043310c987a","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-09-11T09:22:20Z","title_canon_sha256":"760204ec2fb07c3642acfd687f21009c3bf16b43abbc1b74f230150c90b43aec"},"schema_version":"1.0","source":{"id":"2409.07124","kind":"arxiv","version":2}},"canonical_sha256":"a0dee1417fc894d0c7ff04ec3c7adeedb8b35c8e0dc2b8a5509303e11804c7c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a0dee1417fc894d0c7ff04ec3c7adeedb8b35c8e0dc2b8a5509303e11804c7c0","first_computed_at":"2026-07-05T10:25:09.752030Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:25:09.752030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gQuuwi2zj8hic71ZoZC/t+mRtJFcw5BT924+BpGr1ci/ZIVQJKsr/V69IOGbgvs+NDY+TKB1S1RDhSa8d/sbBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:25:09.752705Z","signed_message":"canonical_sha256_bytes"},"source_id":"2409.07124","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f32006e1da0bf481cab02e07c8acd1d40aeab16af2043d51819f3ce464f494f","sha256:3e2df73a04f0b1efdbfc8f57d9140e49343f479b17965035e77b24220c767d1a"],"state_sha256":"7f5b48dac657bea277d763302e3af7b9f30806ea3a2615746f937b12b37d16ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2D60Wu+AZEOEzOutQoquiUrQM/aXzfauxFkXRNRFrEApeRCr3GuVMCGR4cK72IIaBVBB6ekSWKDGlM+OrRqtCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T10:05:17.068713Z","bundle_sha256":"66940582da2846693470c2ec9cf11c42b0d697231124c6d528098f153b8ac1a8"}}