{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:T7FEFA7SFOJUSPWONVWUWOAIKY","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":"fa6c9bc397d3ecb5a5b2ebf6c0787cf027186ab21ec9d1c57097fc8ef32b1b90","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-03-28T02:06:01Z","title_canon_sha256":"8653ec60292d1cec061cfb3afac81cc4f48ad8f0afef7a444836a875ae6829d0"},"schema_version":"1.0","source":{"id":"1304.8001","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.8001","created_at":"2026-05-18T03:26:51Z"},{"alias_kind":"arxiv_version","alias_value":"1304.8001v1","created_at":"2026-05-18T03:26:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.8001","created_at":"2026-05-18T03:26:51Z"},{"alias_kind":"pith_short_12","alias_value":"T7FEFA7SFOJU","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"T7FEFA7SFOJUSPWO","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"T7FEFA7S","created_at":"2026-05-18T12:27:59Z"}],"graph_snapshots":[{"event_id":"sha256:5be8daa5159b34760e7772c23853e5620fde1dba3c28c579df652c144e8b8447","target":"graph","created_at":"2026-05-18T03:26:51Z","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 spiral structure of our Milky Way has not yet been well outlined. HII regions, giant molecular clouds (GMCs) and 6.7-GHz methanol masers are primary tracers for spiral arms. We collect and update the database of these tracers which has been used in Hou, Han & Shi (2009) for mapping the spiral structure.","authors_text":"J. L. Han, L. G. Hou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-03-28T02:06:01Z","title":"The spiral structure of our Milky Way"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.8001","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:bda88b3d6d1e03ed5acb53618321c8f717ddee900272b47b44db70f0b1ed8596","target":"record","created_at":"2026-05-18T03:26:51Z","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":"fa6c9bc397d3ecb5a5b2ebf6c0787cf027186ab21ec9d1c57097fc8ef32b1b90","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-03-28T02:06:01Z","title_canon_sha256":"8653ec60292d1cec061cfb3afac81cc4f48ad8f0afef7a444836a875ae6829d0"},"schema_version":"1.0","source":{"id":"1304.8001","kind":"arxiv","version":1}},"canonical_sha256":"9fca4283f22b93493ece6d6d4b38085625c009e6849f16cfa0220efc4b3127f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9fca4283f22b93493ece6d6d4b38085625c009e6849f16cfa0220efc4b3127f3","first_computed_at":"2026-05-18T03:26:51.206558Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:26:51.206558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AOxYY6M6EPO116fZU+IBvFWKo70HZwgvz3yv+lyD6JBKyWwpnJwfPCcOgCtTuZ/dJ3SsIZhQZngIVaCJzgGoAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:26:51.207230Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.8001","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bda88b3d6d1e03ed5acb53618321c8f717ddee900272b47b44db70f0b1ed8596","sha256:5be8daa5159b34760e7772c23853e5620fde1dba3c28c579df652c144e8b8447"],"state_sha256":"6c224c8d252a667acfd5b3bbe4bf981d905301c338948a8d30310012b028349e"}