{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:5HCPUJJENAIW4WQYYBRWGIVFCH","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":"debc397dd0596538aeb8fce77ab258e5a1a51defa0d60db8875852d1c4c55ec8","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-26T01:20:22Z","title_canon_sha256":"64c23ac700b1a0b8519763c4b4d742b326b2d77d0b2be4b3ee85610c90b51398"},"schema_version":"1.0","source":{"id":"0801.4050","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0801.4050","created_at":"2026-07-04T15:44:39Z"},{"alias_kind":"arxiv_version","alias_value":"0801.4050v1","created_at":"2026-07-04T15:44:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0801.4050","created_at":"2026-07-04T15:44:39Z"},{"alias_kind":"pith_short_12","alias_value":"5HCPUJJENAIW","created_at":"2026-07-04T15:44:39Z"},{"alias_kind":"pith_short_16","alias_value":"5HCPUJJENAIW4WQY","created_at":"2026-07-04T15:44:39Z"},{"alias_kind":"pith_short_8","alias_value":"5HCPUJJE","created_at":"2026-07-04T15:44:39Z"}],"graph_snapshots":[{"event_id":"sha256:fb574a39b4844b8a1a4a17a3c4ab9c7c99009a7a0c9a55d3683a70a41cf0ae76","target":"graph","created_at":"2026-07-04T15:44:39Z","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/0801.4050/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Normal field stars located behind dense clouds are a valuable resource in interstellar astrophysics, as they provide continua in which to study phenomena such as gas-phase and solid-state absorption features, interstellar extinction and polarization. This paper reports the results of a search for highly reddened stars behind the Taurus Dark Cloud complex. We use the Two Micron All Sky Survey (2MASS) Point Source Catalog to survey a 50 sq deg area of the cloud to a limiting magnitude of K = 10.0. Photometry in the 1.2-2.2 micron passbands from 2MASS is combined with photometry at longer infrare","authors_text":"D. C. B. Whittet, D. M. Watson, J. A. Ives, S. S. Shenoy","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2008-01-26T01:20:22Z","title":"A Catalog of Background Stars Reddened by Dust in the Taurus Dark Clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0801.4050","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":"sha256:08e2613965caa2df9870fa921e9fc763e9d093b201acaabf6529b99d35d88e81","target":"record","created_at":"2026-07-04T15:44:39Z","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":"debc397dd0596538aeb8fce77ab258e5a1a51defa0d60db8875852d1c4c55ec8","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2008-01-26T01:20:22Z","title_canon_sha256":"64c23ac700b1a0b8519763c4b4d742b326b2d77d0b2be4b3ee85610c90b51398"},"schema_version":"1.0","source":{"id":"0801.4050","kind":"arxiv","version":1}},"canonical_sha256":"e9c4fa252468116e5a18c0636322a511f9d6c06cdfefb015866c138c87afdb5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9c4fa252468116e5a18c0636322a511f9d6c06cdfefb015866c138c87afdb5b","first_computed_at":"2026-07-04T15:44:39.976731Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:44:39.976731Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Q5+AaHdp+lYkSrQj41Z6GPlwbg3FezGQA77pfd6RY3L5N1LOZY8sxoSR5+ovOmTyCDiEIxuQre5emq9ly0lDCw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:44:39.977141Z","signed_message":"canonical_sha256_bytes"},"source_id":"0801.4050","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:08e2613965caa2df9870fa921e9fc763e9d093b201acaabf6529b99d35d88e81","sha256:fb574a39b4844b8a1a4a17a3c4ab9c7c99009a7a0c9a55d3683a70a41cf0ae76"],"state_sha256":"d21b0be92375dfd96faacb93eaceaa6d40a0845deadd89a0621c364c5e71c1ef"}