{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:OBGRDQS3DYELVTJASF25DGVBMG","short_pith_number":"pith:OBGRDQS3","canonical_record":{"source":{"id":"1306.2326","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-06-10T20:01:07Z","cross_cats_sorted":[],"title_canon_sha256":"d6bc6a06ad845d37482de16323ecc82cbed64b45bced35d7de2f1c31f8476ea5","abstract_canon_sha256":"069c6f49912b8750af4595a659d67f855b03a2222dffd1fed14b21b6d09dae29"},"schema_version":"1.0"},"canonical_sha256":"704d11c25b1e08bacd209175d19aa161b3fe75bcea4335f1300a908f99d6110a","source":{"kind":"arxiv","id":"1306.2326","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.2326","created_at":"2026-05-18T01:49:24Z"},{"alias_kind":"arxiv_version","alias_value":"1306.2326v1","created_at":"2026-05-18T01:49:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.2326","created_at":"2026-05-18T01:49:24Z"},{"alias_kind":"pith_short_12","alias_value":"OBGRDQS3DYEL","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OBGRDQS3DYELVTJA","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OBGRDQS3","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:OBGRDQS3DYELVTJASF25DGVBMG","target":"record","payload":{"canonical_record":{"source":{"id":"1306.2326","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-06-10T20:01:07Z","cross_cats_sorted":[],"title_canon_sha256":"d6bc6a06ad845d37482de16323ecc82cbed64b45bced35d7de2f1c31f8476ea5","abstract_canon_sha256":"069c6f49912b8750af4595a659d67f855b03a2222dffd1fed14b21b6d09dae29"},"schema_version":"1.0"},"canonical_sha256":"704d11c25b1e08bacd209175d19aa161b3fe75bcea4335f1300a908f99d6110a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:49:24.039901Z","signature_b64":"2+tLX5u7Mc05Jty938nFaaafzo/C7qDWbGFe1dH5TN63Ta7q2lIe+r8jhPpo2T3pU1V/oAJljo3wNyUzjnXkBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"704d11c25b1e08bacd209175d19aa161b3fe75bcea4335f1300a908f99d6110a","last_reissued_at":"2026-05-18T01:49:24.039340Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:49:24.039340Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1306.2326","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":"2026-05-18T01:49:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A/GustC9ddVi42a8PFQVFFNUmjGCr5buSSP4JlDRlZvRk7sskoPRCjtISe6p4skmo7PgPhG53Fk7p18ugPRcCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T07:30:14.266571Z"},"content_sha256":"85590964a81fa470c1e9663109a9139b572d9b33910d03d7bbc65350926fdf43","schema_version":"1.0","event_id":"sha256:85590964a81fa470c1e9663109a9139b572d9b33910d03d7bbc65350926fdf43"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:OBGRDQS3DYELVTJASF25DGVBMG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Near-infrared Variability among YSOs in the Star Formation Region Cygnus OB7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"((2) Institute for Astronomy, Colin A. Aspin (2) ((1) Harvard-Smithsonian Center for Astrophysics), Scott J. Wolk (1), Thomas S. Rice (1), University of Hawaii)","submitted_at":"2013-06-10T20:01:07Z","abstract_excerpt":"We present an analysis of near-infrared time-series photometry in J, H, and K bands for about 100 epochs of a 1 square degree region of the Lynds 1003/1004 dark cloud in the Cygnus OB7 region. Augmented by data from the Wide-field Infrared Survey Explorer (WISE), we identify 96 candidate disk bearing young stellar objects (YSOs) in the region. Of these, 30 are clearly Class I or earlier. Using the Wide-Field imaging CAMera (WFCAM) on the United Kingdom InfraRed Telescope (UKIRT), we were able to obtain photometry over three observing seasons, with photometric uncertainty better than 0.05 mag d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.2326","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":"2026-05-18T01:49:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fkbTbFSbKBB1Dzse6kKgYDhoM5DT5/fieklH1Q0DJuBt9iNFEhJHLTDpSPgAktbsWqXB3X/xFt09f/55HPkKBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T07:30:14.267327Z"},"content_sha256":"a8720744071e140bca3e45ffe29673e7bfd58da2f937b1161f205ac2f41eb217","schema_version":"1.0","event_id":"sha256:a8720744071e140bca3e45ffe29673e7bfd58da2f937b1161f205ac2f41eb217"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OBGRDQS3DYELVTJASF25DGVBMG/bundle.json","state_url":"https://pith.science/pith/OBGRDQS3DYELVTJASF25DGVBMG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OBGRDQS3DYELVTJASF25DGVBMG/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":"2026-05-31T07:30:14Z","links":{"resolver":"https://pith.science/pith/OBGRDQS3DYELVTJASF25DGVBMG","bundle":"https://pith.science/pith/OBGRDQS3DYELVTJASF25DGVBMG/bundle.json","state":"https://pith.science/pith/OBGRDQS3DYELVTJASF25DGVBMG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OBGRDQS3DYELVTJASF25DGVBMG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:OBGRDQS3DYELVTJASF25DGVBMG","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":"069c6f49912b8750af4595a659d67f855b03a2222dffd1fed14b21b6d09dae29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-06-10T20:01:07Z","title_canon_sha256":"d6bc6a06ad845d37482de16323ecc82cbed64b45bced35d7de2f1c31f8476ea5"},"schema_version":"1.0","source":{"id":"1306.2326","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.2326","created_at":"2026-05-18T01:49:24Z"},{"alias_kind":"arxiv_version","alias_value":"1306.2326v1","created_at":"2026-05-18T01:49:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.2326","created_at":"2026-05-18T01:49:24Z"},{"alias_kind":"pith_short_12","alias_value":"OBGRDQS3DYEL","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OBGRDQS3DYELVTJA","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OBGRDQS3","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:a8720744071e140bca3e45ffe29673e7bfd58da2f937b1161f205ac2f41eb217","target":"graph","created_at":"2026-05-18T01:49:24Z","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":"We present an analysis of near-infrared time-series photometry in J, H, and K bands for about 100 epochs of a 1 square degree region of the Lynds 1003/1004 dark cloud in the Cygnus OB7 region. Augmented by data from the Wide-field Infrared Survey Explorer (WISE), we identify 96 candidate disk bearing young stellar objects (YSOs) in the region. Of these, 30 are clearly Class I or earlier. Using the Wide-Field imaging CAMera (WFCAM) on the United Kingdom InfraRed Telescope (UKIRT), we were able to obtain photometry over three observing seasons, with photometric uncertainty better than 0.05 mag d","authors_text":"((2) Institute for Astronomy, Colin A. Aspin (2) ((1) Harvard-Smithsonian Center for Astrophysics), Scott J. Wolk (1), Thomas S. Rice (1), University of Hawaii)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-06-10T20:01:07Z","title":"Near-infrared Variability among YSOs in the Star Formation Region Cygnus OB7"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.2326","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":"sha256:85590964a81fa470c1e9663109a9139b572d9b33910d03d7bbc65350926fdf43","target":"record","created_at":"2026-05-18T01:49:24Z","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":"069c6f49912b8750af4595a659d67f855b03a2222dffd1fed14b21b6d09dae29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-06-10T20:01:07Z","title_canon_sha256":"d6bc6a06ad845d37482de16323ecc82cbed64b45bced35d7de2f1c31f8476ea5"},"schema_version":"1.0","source":{"id":"1306.2326","kind":"arxiv","version":1}},"canonical_sha256":"704d11c25b1e08bacd209175d19aa161b3fe75bcea4335f1300a908f99d6110a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"704d11c25b1e08bacd209175d19aa161b3fe75bcea4335f1300a908f99d6110a","first_computed_at":"2026-05-18T01:49:24.039340Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:49:24.039340Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2+tLX5u7Mc05Jty938nFaaafzo/C7qDWbGFe1dH5TN63Ta7q2lIe+r8jhPpo2T3pU1V/oAJljo3wNyUzjnXkBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:49:24.039901Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.2326","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85590964a81fa470c1e9663109a9139b572d9b33910d03d7bbc65350926fdf43","sha256:a8720744071e140bca3e45ffe29673e7bfd58da2f937b1161f205ac2f41eb217"],"state_sha256":"74cee39e3f0978f01bde53244df1e6ce5165db3271301de6e18a4c8c9336bd7e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8oIqxl//Lyrc2x2wrvIxYT+1Y5ey1pyPAYA/Au8IN2mhA6lQR9h3TDXwR42+mElUgJ/m3JabBRLuw/zWCVz5CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T07:30:14.270860Z","bundle_sha256":"d3d640220ddff9c4416ba156ccad0adf9ed2b9f7c48abdb33243709b809fad09"}}