{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:BSPMUSCYN62I3NNPVG7D6VM6ZG","short_pith_number":"pith:BSPMUSCY","canonical_record":{"source":{"id":"2108.11046","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-08-25T04:52:52Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c20eddc8f01d0390595afdc3ec37ff3eeabf28df7aeecd47f55225e5f0d3068a","abstract_canon_sha256":"9c920c556295e5cb67b536216346cc0721fefaf116dea44a6392c83632a7ca85"},"schema_version":"1.0"},"canonical_sha256":"0c9eca48586fb48db5afa9be3f559ec99405c4acfb0ebce2ca444ac7a0f510f2","source":{"kind":"arxiv","id":"2108.11046","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.11046","created_at":"2026-07-05T03:34:33Z"},{"alias_kind":"arxiv_version","alias_value":"2108.11046v1","created_at":"2026-07-05T03:34:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.11046","created_at":"2026-07-05T03:34:33Z"},{"alias_kind":"pith_short_12","alias_value":"BSPMUSCYN62I","created_at":"2026-07-05T03:34:33Z"},{"alias_kind":"pith_short_16","alias_value":"BSPMUSCYN62I3NNP","created_at":"2026-07-05T03:34:33Z"},{"alias_kind":"pith_short_8","alias_value":"BSPMUSCY","created_at":"2026-07-05T03:34:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:BSPMUSCYN62I3NNPVG7D6VM6ZG","target":"record","payload":{"canonical_record":{"source":{"id":"2108.11046","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-08-25T04:52:52Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c20eddc8f01d0390595afdc3ec37ff3eeabf28df7aeecd47f55225e5f0d3068a","abstract_canon_sha256":"9c920c556295e5cb67b536216346cc0721fefaf116dea44a6392c83632a7ca85"},"schema_version":"1.0"},"canonical_sha256":"0c9eca48586fb48db5afa9be3f559ec99405c4acfb0ebce2ca444ac7a0f510f2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:34:33.448813Z","signature_b64":"57C6CwDT4P1yX+7LXHbyF/ygklIfStb/yoDZOHnorxmM6zUO8ph60jEa3wyrmVO+W3P5b5Yos/+qRH+Rs/H/BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c9eca48586fb48db5afa9be3f559ec99405c4acfb0ebce2ca444ac7a0f510f2","last_reissued_at":"2026-07-05T03:34:33.448443Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:34:33.448443Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2108.11046","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":"2026-07-05T03:34:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/NFkGsouC+D2akJzJ76PVcNcoxdb1/9wnYOhUca3jptB2UjsDwJ7keihFUX1A/ErFMSvI/cDVRo/oe8oGdhqBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-18T04:22:47.790534Z"},"content_sha256":"9068ad3103cfef2d625882289cec0a644dba2b531f7852176f53ee6259e3f0d8","schema_version":"1.0","event_id":"sha256:9068ad3103cfef2d625882289cec0a644dba2b531f7852176f53ee6259e3f0d8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:BSPMUSCYN62I3NNPVG7D6VM6ZG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Improved Measurements of Molecular Cloud Distances Based on Global Search","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Chen Wang, Hongchi Wang, Ji Yang, Qing-Zeng Yan, Xin Zhou, Yang Su, Yan Sun, Ye Xu","submitted_at":"2021-08-25T04:52:52Z","abstract_excerpt":"The principle of the background-eliminated extinction-parallax (BEEP) method is examining the extinction difference between on- and off-cloud regions to reveal the extinction jump caused by molecular clouds, thereby revealing the distance in complex dust environments. The BEEP method requires high-quality images of molecular clouds and high-precision stellar parallaxes and extinction data, which can be provided by the Milky Way Imaging Scroll Painting (MWISP) CO survey and the Gaia DR2 catalog, as well as supplementary AV extinction data. In this work, the BEEP method is further improved (BEEP"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.11046","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/2108.11046/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":"2026-07-05T03:34:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TGm7Z3rhI9VAfq3H2bhD8KzpJIkxT8eMIjtIgVxRRxc9L9om+4ZMujcfJRYEeGHRPeVUSwynUkgRvXY0KgZrBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-18T04:22:47.790906Z"},"content_sha256":"f5680fea500210d86e07f1a8ccf1bebc297263d2cd2594017c69a28df731f794","schema_version":"1.0","event_id":"sha256:f5680fea500210d86e07f1a8ccf1bebc297263d2cd2594017c69a28df731f794"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BSPMUSCYN62I3NNPVG7D6VM6ZG/bundle.json","state_url":"https://pith.science/pith/BSPMUSCYN62I3NNPVG7D6VM6ZG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BSPMUSCYN62I3NNPVG7D6VM6ZG/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":"2026-07-18T04:22:47Z","links":{"resolver":"https://pith.science/pith/BSPMUSCYN62I3NNPVG7D6VM6ZG","bundle":"https://pith.science/pith/BSPMUSCYN62I3NNPVG7D6VM6ZG/bundle.json","state":"https://pith.science/pith/BSPMUSCYN62I3NNPVG7D6VM6ZG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BSPMUSCYN62I3NNPVG7D6VM6ZG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:BSPMUSCYN62I3NNPVG7D6VM6ZG","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":"9c920c556295e5cb67b536216346cc0721fefaf116dea44a6392c83632a7ca85","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-08-25T04:52:52Z","title_canon_sha256":"c20eddc8f01d0390595afdc3ec37ff3eeabf28df7aeecd47f55225e5f0d3068a"},"schema_version":"1.0","source":{"id":"2108.11046","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.11046","created_at":"2026-07-05T03:34:33Z"},{"alias_kind":"arxiv_version","alias_value":"2108.11046v1","created_at":"2026-07-05T03:34:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.11046","created_at":"2026-07-05T03:34:33Z"},{"alias_kind":"pith_short_12","alias_value":"BSPMUSCYN62I","created_at":"2026-07-05T03:34:33Z"},{"alias_kind":"pith_short_16","alias_value":"BSPMUSCYN62I3NNP","created_at":"2026-07-05T03:34:33Z"},{"alias_kind":"pith_short_8","alias_value":"BSPMUSCY","created_at":"2026-07-05T03:34:33Z"}],"graph_snapshots":[{"event_id":"sha256:f5680fea500210d86e07f1a8ccf1bebc297263d2cd2594017c69a28df731f794","target":"graph","created_at":"2026-07-05T03:34:33Z","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/2108.11046/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The principle of the background-eliminated extinction-parallax (BEEP) method is examining the extinction difference between on- and off-cloud regions to reveal the extinction jump caused by molecular clouds, thereby revealing the distance in complex dust environments. The BEEP method requires high-quality images of molecular clouds and high-precision stellar parallaxes and extinction data, which can be provided by the Milky Way Imaging Scroll Painting (MWISP) CO survey and the Gaia DR2 catalog, as well as supplementary AV extinction data. In this work, the BEEP method is further improved (BEEP","authors_text":"Chen Wang, Hongchi Wang, Ji Yang, Qing-Zeng Yan, Xin Zhou, Yang Su, Yan Sun, Ye Xu","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-08-25T04:52:52Z","title":"Improved Measurements of Molecular Cloud Distances Based on Global Search"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.11046","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":"sha256:9068ad3103cfef2d625882289cec0a644dba2b531f7852176f53ee6259e3f0d8","target":"record","created_at":"2026-07-05T03:34:33Z","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":"9c920c556295e5cb67b536216346cc0721fefaf116dea44a6392c83632a7ca85","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-08-25T04:52:52Z","title_canon_sha256":"c20eddc8f01d0390595afdc3ec37ff3eeabf28df7aeecd47f55225e5f0d3068a"},"schema_version":"1.0","source":{"id":"2108.11046","kind":"arxiv","version":1}},"canonical_sha256":"0c9eca48586fb48db5afa9be3f559ec99405c4acfb0ebce2ca444ac7a0f510f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c9eca48586fb48db5afa9be3f559ec99405c4acfb0ebce2ca444ac7a0f510f2","first_computed_at":"2026-07-05T03:34:33.448443Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:34:33.448443Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"57C6CwDT4P1yX+7LXHbyF/ygklIfStb/yoDZOHnorxmM6zUO8ph60jEa3wyrmVO+W3P5b5Yos/+qRH+Rs/H/BA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:34:33.448813Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.11046","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9068ad3103cfef2d625882289cec0a644dba2b531f7852176f53ee6259e3f0d8","sha256:f5680fea500210d86e07f1a8ccf1bebc297263d2cd2594017c69a28df731f794"],"state_sha256":"91577aac91dbb8de040ebfef4fa7dbc78b22a02dc85d671db935db863792fd4c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FewjwtsElApsPbF3DfthjLsusOgJeDvtly1DPoZPs/0tvMcdOqJb/MrfDhz80fo+yGbsAySPTuYYLPC6AHjnCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-18T04:22:47.793003Z","bundle_sha256":"868c66edfe873e6b3bb26b207cbf27a7b8b054b54c4ec14d6ec584691de1c84d"}}