{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:APLGK2X2A6SFGVBUO7LOK3PS5N","short_pith_number":"pith:APLGK2X2","canonical_record":{"source":{"id":"0906.5117","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-28T06:53:31Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"e3df442639c6559b116ff52c564973c76716a45a8fbfa3490751d82dd48cec6b","abstract_canon_sha256":"8f28892067468e29a2a10ac717db3f58942657cc594623a61f5c1da3e9cd388e"},"schema_version":"1.0"},"canonical_sha256":"03d6656afa07a453543477d6e56df2eb717336592025466c3f2564a64a77bd77","source":{"kind":"arxiv","id":"0906.5117","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.5117","created_at":"2026-05-18T02:13:12Z"},{"alias_kind":"arxiv_version","alias_value":"0906.5117v1","created_at":"2026-05-18T02:13:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.5117","created_at":"2026-05-18T02:13:12Z"},{"alias_kind":"pith_short_12","alias_value":"APLGK2X2A6SF","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"APLGK2X2A6SFGVBU","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"APLGK2X2","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:APLGK2X2A6SFGVBUO7LOK3PS5N","target":"record","payload":{"canonical_record":{"source":{"id":"0906.5117","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-28T06:53:31Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"e3df442639c6559b116ff52c564973c76716a45a8fbfa3490751d82dd48cec6b","abstract_canon_sha256":"8f28892067468e29a2a10ac717db3f58942657cc594623a61f5c1da3e9cd388e"},"schema_version":"1.0"},"canonical_sha256":"03d6656afa07a453543477d6e56df2eb717336592025466c3f2564a64a77bd77","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:12.188898Z","signature_b64":"Yo/00ybuxqQkiVy3KLvbWA1r9vX7WUUQ/zQCEizIVJaS43NHhDUw5qo+Nzwdkdrjk+f70uk6RGh2CY1XWyLsDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"03d6656afa07a453543477d6e56df2eb717336592025466c3f2564a64a77bd77","last_reissued_at":"2026-05-18T02:13:12.188512Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:12.188512Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.5117","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":"2026-05-18T02:13:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MC8zemMT+rKliRmoBJzKDpUYYXHfG4o9T73ksMU5d2jVyrzfQJ2NhTXjC++v/XOmiViQP9jJDC+KnK9y/iM6CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T19:00:35.547233Z"},"content_sha256":"aeac56511fa0885dd27f1aa56170f5f9a5eea8744e5c47a73d213c552a0123ae","schema_version":"1.0","event_id":"sha256:aeac56511fa0885dd27f1aa56170f5f9a5eea8744e5c47a73d213c552a0123ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:APLGK2X2A6SFGVBUO7LOK3PS5N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dark impact and galactic star formation: Origin of the Gould belt","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Kenji Bekki","submitted_at":"2009-06-28T06:53:31Z","abstract_excerpt":"The Milky Way has a giant stellar structure in the solar neighborhood, which has a size of $\\sim 1$ kpc, a mass of $\\sim 10^6 {\\rm M}_{\\odot}$, and a ring-like distribution of young stars. Fundamental physical properties of this local enigmatic structure, known as the Gould belt (GB), have not been reproduced by previously proposed models. We first show that the local enigmatic structure can be formed about 30 Myr ago as a result of a high-speed, oblique collision between a gas cloud with a mass of $\\sim 10^6 {\\rm M}_{\\odot}$ and a dark matter clump with a mass of $\\sim 10^7 {\\rm M}_{\\odot}$ b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.5117","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":""},"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":"2026-05-18T02:13:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"twjRULpHScZqLlFbjRspt2xG8R4B4iWUAWR0XKf2gudCVNf0NXLuVrHmfhDlCYbeHoatrmDvb7TMdkiglIZ3Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T19:00:35.547595Z"},"content_sha256":"3a79fb8ceb8e8591adeca8a436c6565ad88f48fa60842acbb31802a9ea8bd7cc","schema_version":"1.0","event_id":"sha256:3a79fb8ceb8e8591adeca8a436c6565ad88f48fa60842acbb31802a9ea8bd7cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/APLGK2X2A6SFGVBUO7LOK3PS5N/bundle.json","state_url":"https://pith.science/pith/APLGK2X2A6SFGVBUO7LOK3PS5N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/APLGK2X2A6SFGVBUO7LOK3PS5N/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":"2026-05-19T19:00:35Z","links":{"resolver":"https://pith.science/pith/APLGK2X2A6SFGVBUO7LOK3PS5N","bundle":"https://pith.science/pith/APLGK2X2A6SFGVBUO7LOK3PS5N/bundle.json","state":"https://pith.science/pith/APLGK2X2A6SFGVBUO7LOK3PS5N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/APLGK2X2A6SFGVBUO7LOK3PS5N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:APLGK2X2A6SFGVBUO7LOK3PS5N","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":"8f28892067468e29a2a10ac717db3f58942657cc594623a61f5c1da3e9cd388e","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-28T06:53:31Z","title_canon_sha256":"e3df442639c6559b116ff52c564973c76716a45a8fbfa3490751d82dd48cec6b"},"schema_version":"1.0","source":{"id":"0906.5117","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.5117","created_at":"2026-05-18T02:13:12Z"},{"alias_kind":"arxiv_version","alias_value":"0906.5117v1","created_at":"2026-05-18T02:13:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.5117","created_at":"2026-05-18T02:13:12Z"},{"alias_kind":"pith_short_12","alias_value":"APLGK2X2A6SF","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"APLGK2X2A6SFGVBU","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"APLGK2X2","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:3a79fb8ceb8e8591adeca8a436c6565ad88f48fa60842acbb31802a9ea8bd7cc","target":"graph","created_at":"2026-05-18T02:13:12Z","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"},"paper":{"abstract_excerpt":"The Milky Way has a giant stellar structure in the solar neighborhood, which has a size of $\\sim 1$ kpc, a mass of $\\sim 10^6 {\\rm M}_{\\odot}$, and a ring-like distribution of young stars. Fundamental physical properties of this local enigmatic structure, known as the Gould belt (GB), have not been reproduced by previously proposed models. We first show that the local enigmatic structure can be formed about 30 Myr ago as a result of a high-speed, oblique collision between a gas cloud with a mass of $\\sim 10^6 {\\rm M}_{\\odot}$ and a dark matter clump with a mass of $\\sim 10^7 {\\rm M}_{\\odot}$ b","authors_text":"Kenji Bekki","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-28T06:53:31Z","title":"Dark impact and galactic star formation: Origin of the Gould belt"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.5117","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:aeac56511fa0885dd27f1aa56170f5f9a5eea8744e5c47a73d213c552a0123ae","target":"record","created_at":"2026-05-18T02:13:12Z","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":"8f28892067468e29a2a10ac717db3f58942657cc594623a61f5c1da3e9cd388e","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-28T06:53:31Z","title_canon_sha256":"e3df442639c6559b116ff52c564973c76716a45a8fbfa3490751d82dd48cec6b"},"schema_version":"1.0","source":{"id":"0906.5117","kind":"arxiv","version":1}},"canonical_sha256":"03d6656afa07a453543477d6e56df2eb717336592025466c3f2564a64a77bd77","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"03d6656afa07a453543477d6e56df2eb717336592025466c3f2564a64a77bd77","first_computed_at":"2026-05-18T02:13:12.188512Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:12.188512Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Yo/00ybuxqQkiVy3KLvbWA1r9vX7WUUQ/zQCEizIVJaS43NHhDUw5qo+Nzwdkdrjk+f70uk6RGh2CY1XWyLsDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:12.188898Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.5117","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aeac56511fa0885dd27f1aa56170f5f9a5eea8744e5c47a73d213c552a0123ae","sha256:3a79fb8ceb8e8591adeca8a436c6565ad88f48fa60842acbb31802a9ea8bd7cc"],"state_sha256":"b7174784d248481063ad1cb029aee606fdac51050efc55dd5b3a4febc68bd8c0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UxfumDn27QsRCnO0D/Zn36+959nSv/9sOa1ryAkSNlr35iLffdrjQWWMWadiDT629dbLS8pDJNKoBHkLO8UYCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T19:00:35.550952Z","bundle_sha256":"71f6e64320692aa20b7ed4e4041106b03216b6c16fa68b84c84fdfbfa8d47f49"}}