{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:D7BS4MDBJWSO5HSQIKHYB7WQZE","short_pith_number":"pith:D7BS4MDB","canonical_record":{"source":{"id":"2606.02028","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-01T10:16:24Z","cross_cats_sorted":[],"title_canon_sha256":"52b5ab70393c866060ee94ef3996b93fcd904f3689e83e3c9910330ae2aa3cda","abstract_canon_sha256":"2e634234ee3a7e3c431e24935dff004dc90784b28fe59a18ace944fffab00438"},"schema_version":"1.0"},"canonical_sha256":"1fc32e30614da4ee9e50428f80fed0c93686e1ee31c395fe71d9bd05fbec4f3f","source":{"kind":"arxiv","id":"2606.02028","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.02028","created_at":"2026-06-02T02:05:03Z"},{"alias_kind":"arxiv_version","alias_value":"2606.02028v1","created_at":"2026-06-02T02:05:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.02028","created_at":"2026-06-02T02:05:03Z"},{"alias_kind":"pith_short_12","alias_value":"D7BS4MDBJWSO","created_at":"2026-06-02T02:05:03Z"},{"alias_kind":"pith_short_16","alias_value":"D7BS4MDBJWSO5HSQ","created_at":"2026-06-02T02:05:03Z"},{"alias_kind":"pith_short_8","alias_value":"D7BS4MDB","created_at":"2026-06-02T02:05:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:D7BS4MDBJWSO5HSQIKHYB7WQZE","target":"record","payload":{"canonical_record":{"source":{"id":"2606.02028","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-01T10:16:24Z","cross_cats_sorted":[],"title_canon_sha256":"52b5ab70393c866060ee94ef3996b93fcd904f3689e83e3c9910330ae2aa3cda","abstract_canon_sha256":"2e634234ee3a7e3c431e24935dff004dc90784b28fe59a18ace944fffab00438"},"schema_version":"1.0"},"canonical_sha256":"1fc32e30614da4ee9e50428f80fed0c93686e1ee31c395fe71d9bd05fbec4f3f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-02T02:05:03.938202Z","signature_b64":"UhNek3mfXEedbAUloDnOsgZic3ZveNDrw7axDQz+Wiyybf08pIl5aLpkyDjKuKnqZfLGx2HpH57whQW+jYacCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1fc32e30614da4ee9e50428f80fed0c93686e1ee31c395fe71d9bd05fbec4f3f","last_reissued_at":"2026-06-02T02:05:03.937411Z","signature_status":"signed_v1","first_computed_at":"2026-06-02T02:05:03.937411Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.02028","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":"2026-06-02T02:05:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eqg70e+e0iztHyUn74f9st+rbRohNxJYbhPRHr97IZmyte1RMIuWSh7NMj/KPAbK3dw/r3tZPWuE24AEsVCeBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:04:54.358436Z"},"content_sha256":"22926c4b69453bc84f44995c6d771d20f939e5ae38ceef49c979ce0f57db9c4f","schema_version":"1.0","event_id":"sha256:22926c4b69453bc84f44995c6d771d20f939e5ae38ceef49c979ce0f57db9c4f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:D7BS4MDBJWSO5HSQIKHYB7WQZE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A study of the Physical Properties and Star Formation Activity of a Large Sample of Molecular Clouds: I Distances","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ji Yang, Juan Mei, Lixia Yuan, Miaomiao Zhang, Min Fang, Qing-Zeng Yan, Shiyu Zhang, Xuepeng Chen, Yang Su, Zhibo Jiang, Zhiwei Chen","submitted_at":"2026-06-01T10:16:24Z","abstract_excerpt":"Accurate distances to molecular clouds are crucial for determining their physical properties, understanding star formation, and tracing Galactic spiral structure. A number of 103,517 molecular clouds has been identified by the DBSCAN algorithm in the MWISP Phase I CO survey (l = 9.75-229.75 deg, |b| <= 5.25 deg), most of which lack reliable distances. In this work, we propose three independent methods, all of which match the molecular cloud's velocity-integrated intensity maps of 12CO lines from the MWISP with the three-dimensional dust extinction maps derived from Gaia, Pan-STARRS 1, and 2MAS"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.02028","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/2606.02028/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":"2026-06-02T02:05:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TL7BGPH4YOVk/NXqY7xo55zF3K+dZGKup8hivj398Vq95BiIkEMy0nWmsOrVNDt2kCOc2lAaSugJOW4MTdtHAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:04:54.359203Z"},"content_sha256":"a272c0bcdfe7039144ee8c8544d0b2ad491a34ecec256089d61e5bfe32ec9cb8","schema_version":"1.0","event_id":"sha256:a272c0bcdfe7039144ee8c8544d0b2ad491a34ecec256089d61e5bfe32ec9cb8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D7BS4MDBJWSO5HSQIKHYB7WQZE/bundle.json","state_url":"https://pith.science/pith/D7BS4MDBJWSO5HSQIKHYB7WQZE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D7BS4MDBJWSO5HSQIKHYB7WQZE/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":"2026-06-05T20:04:54Z","links":{"resolver":"https://pith.science/pith/D7BS4MDBJWSO5HSQIKHYB7WQZE","bundle":"https://pith.science/pith/D7BS4MDBJWSO5HSQIKHYB7WQZE/bundle.json","state":"https://pith.science/pith/D7BS4MDBJWSO5HSQIKHYB7WQZE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D7BS4MDBJWSO5HSQIKHYB7WQZE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:D7BS4MDBJWSO5HSQIKHYB7WQZE","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":"2e634234ee3a7e3c431e24935dff004dc90784b28fe59a18ace944fffab00438","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-01T10:16:24Z","title_canon_sha256":"52b5ab70393c866060ee94ef3996b93fcd904f3689e83e3c9910330ae2aa3cda"},"schema_version":"1.0","source":{"id":"2606.02028","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.02028","created_at":"2026-06-02T02:05:03Z"},{"alias_kind":"arxiv_version","alias_value":"2606.02028v1","created_at":"2026-06-02T02:05:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.02028","created_at":"2026-06-02T02:05:03Z"},{"alias_kind":"pith_short_12","alias_value":"D7BS4MDBJWSO","created_at":"2026-06-02T02:05:03Z"},{"alias_kind":"pith_short_16","alias_value":"D7BS4MDBJWSO5HSQ","created_at":"2026-06-02T02:05:03Z"},{"alias_kind":"pith_short_8","alias_value":"D7BS4MDB","created_at":"2026-06-02T02:05:03Z"}],"graph_snapshots":[{"event_id":"sha256:a272c0bcdfe7039144ee8c8544d0b2ad491a34ecec256089d61e5bfe32ec9cb8","target":"graph","created_at":"2026-06-02T02:05:03Z","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/2606.02028/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Accurate distances to molecular clouds are crucial for determining their physical properties, understanding star formation, and tracing Galactic spiral structure. A number of 103,517 molecular clouds has been identified by the DBSCAN algorithm in the MWISP Phase I CO survey (l = 9.75-229.75 deg, |b| <= 5.25 deg), most of which lack reliable distances. In this work, we propose three independent methods, all of which match the molecular cloud's velocity-integrated intensity maps of 12CO lines from the MWISP with the three-dimensional dust extinction maps derived from Gaia, Pan-STARRS 1, and 2MAS","authors_text":"Ji Yang, Juan Mei, Lixia Yuan, Miaomiao Zhang, Min Fang, Qing-Zeng Yan, Shiyu Zhang, Xuepeng Chen, Yang Su, Zhibo Jiang, Zhiwei Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-01T10:16:24Z","title":"A study of the Physical Properties and Star Formation Activity of a Large Sample of Molecular Clouds: I Distances"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.02028","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":"sha256:22926c4b69453bc84f44995c6d771d20f939e5ae38ceef49c979ce0f57db9c4f","target":"record","created_at":"2026-06-02T02:05:03Z","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":"2e634234ee3a7e3c431e24935dff004dc90784b28fe59a18ace944fffab00438","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-01T10:16:24Z","title_canon_sha256":"52b5ab70393c866060ee94ef3996b93fcd904f3689e83e3c9910330ae2aa3cda"},"schema_version":"1.0","source":{"id":"2606.02028","kind":"arxiv","version":1}},"canonical_sha256":"1fc32e30614da4ee9e50428f80fed0c93686e1ee31c395fe71d9bd05fbec4f3f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1fc32e30614da4ee9e50428f80fed0c93686e1ee31c395fe71d9bd05fbec4f3f","first_computed_at":"2026-06-02T02:05:03.937411Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-02T02:05:03.937411Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UhNek3mfXEedbAUloDnOsgZic3ZveNDrw7axDQz+Wiyybf08pIl5aLpkyDjKuKnqZfLGx2HpH57whQW+jYacCg==","signature_status":"signed_v1","signed_at":"2026-06-02T02:05:03.938202Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.02028","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:22926c4b69453bc84f44995c6d771d20f939e5ae38ceef49c979ce0f57db9c4f","sha256:a272c0bcdfe7039144ee8c8544d0b2ad491a34ecec256089d61e5bfe32ec9cb8"],"state_sha256":"f651c1d419d161d3330e0ab0580cfe8e7cd029cb351b8168b7f2d26e0578ebd6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lHBJ95q+KVXcWJ5lG7CPG6QAZ0p4wMaSX7PbDzHzrL0z6T0K/xEnON1bE3iTj5pvxwxeBK2K/XKWuakCa0HNCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T20:04:54.363776Z","bundle_sha256":"c0f114e348c9ff2fd3bdf82e100a4afbe99f3d54676f67af9abdb878d0d5410d"}}