{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:MJ7MOGJ4HNFZGM424IQYEZQLKY","short_pith_number":"pith:MJ7MOGJ4","canonical_record":{"source":{"id":"1908.04829","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-08-13T19:06:48Z","cross_cats_sorted":[],"title_canon_sha256":"ea19f8dd9fe042ce169cbd8a872e1e7a33b52dac5de46d01babeac5a568697ed","abstract_canon_sha256":"987067517f7ab5ee7ba3e1ff33b327bc6529b49f423c2ed06f6c6891f73a9be2"},"schema_version":"1.0"},"canonical_sha256":"627ec7193c3b4b93339ae22182660b563490195f4f8f2996dc5a6f83797c67e7","source":{"kind":"arxiv","id":"1908.04829","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.04829","created_at":"2026-07-05T00:10:41Z"},{"alias_kind":"arxiv_version","alias_value":"1908.04829v1","created_at":"2026-07-05T00:10:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.04829","created_at":"2026-07-05T00:10:41Z"},{"alias_kind":"pith_short_12","alias_value":"MJ7MOGJ4HNFZ","created_at":"2026-07-05T00:10:41Z"},{"alias_kind":"pith_short_16","alias_value":"MJ7MOGJ4HNFZGM42","created_at":"2026-07-05T00:10:41Z"},{"alias_kind":"pith_short_8","alias_value":"MJ7MOGJ4","created_at":"2026-07-05T00:10:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:MJ7MOGJ4HNFZGM424IQYEZQLKY","target":"record","payload":{"canonical_record":{"source":{"id":"1908.04829","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-08-13T19:06:48Z","cross_cats_sorted":[],"title_canon_sha256":"ea19f8dd9fe042ce169cbd8a872e1e7a33b52dac5de46d01babeac5a568697ed","abstract_canon_sha256":"987067517f7ab5ee7ba3e1ff33b327bc6529b49f423c2ed06f6c6891f73a9be2"},"schema_version":"1.0"},"canonical_sha256":"627ec7193c3b4b93339ae22182660b563490195f4f8f2996dc5a6f83797c67e7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:10:41.813216Z","signature_b64":"7mYlcNCELd2RJPAbSuwWkzNcN1LImknBIY0Zueqtki+vfsMBJpmhrXMCx3nBO27vaw+C5t8C4yoQ4bc/wy1/BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"627ec7193c3b4b93339ae22182660b563490195f4f8f2996dc5a6f83797c67e7","last_reissued_at":"2026-07-05T00:10:41.812809Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:10:41.812809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.04829","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":"2026-07-05T00:10:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GwL8RarF8Zs97JhdDcxxCz/8kWDhBOLfcDafUmWQ40Z2yl6teo8bhVWSQrV2u+i61B7BUcUT8+VCnUICEEzrBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T12:38:50.376064Z"},"content_sha256":"a5bc2a9fe7a342d5de2b0678a0b848c3381f9a656dc26e58e9176193ba4a3522","schema_version":"1.0","event_id":"sha256:a5bc2a9fe7a342d5de2b0678a0b848c3381f9a656dc26e58e9176193ba4a3522"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:MJ7MOGJ4HNFZGM424IQYEZQLKY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Structure of Dark Molecular Gas in the Galaxy -- II. Physical State of \"CO-Dark\" Gas in the Perseus Arm","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"David A. Neufeld, David E. Hogg, Mark G. Wolfire, Michael P. Busch, Philip D. Engelke, Ronald J. Allen","submitted_at":"2019-08-13T19:06:48Z","abstract_excerpt":"We report the results from a new, highly sensitive ($\\Delta T_{mb} \\sim 3 $mK) survey for thermal OH emission at 1665 and 1667 MHz over a dense, 9 x 9-pixel grid covering a $1\\deg$ x $1\\deg$ patch of sky in the direction of $l = 105\\deg, b = +2.50\\deg$ towards the Perseus spiral arm of our Galaxy. We compare our Green Bank Telescope (GBT) 1667 MHz OH results with archival CO J=1-0 observations from the Five College Radio Astronomy Observatory (FCRAO) Outer Galaxy Survey within the velocity range of the Perseus Arm at these galactic coordinates. Out of the 81 statistically-independent pointings"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.04829","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/1908.04829/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":"2026-07-05T00:10:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tA39rAjIvxefu+coVF+ANcTSkGdVPlga8gAUFhZ6So/T/hbcrL89Tpt3QnkgZMZeziP5PIw3T0ngvcat3rQcCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T12:38:50.376765Z"},"content_sha256":"1513619afe20c5e334aa1364f4d3954137d444f861250e2463d5fe71693b1f92","schema_version":"1.0","event_id":"sha256:1513619afe20c5e334aa1364f4d3954137d444f861250e2463d5fe71693b1f92"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MJ7MOGJ4HNFZGM424IQYEZQLKY/bundle.json","state_url":"https://pith.science/pith/MJ7MOGJ4HNFZGM424IQYEZQLKY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MJ7MOGJ4HNFZGM424IQYEZQLKY/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":"2026-08-16T12:38:50Z","links":{"resolver":"https://pith.science/pith/MJ7MOGJ4HNFZGM424IQYEZQLKY","bundle":"https://pith.science/pith/MJ7MOGJ4HNFZGM424IQYEZQLKY/bundle.json","state":"https://pith.science/pith/MJ7MOGJ4HNFZGM424IQYEZQLKY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MJ7MOGJ4HNFZGM424IQYEZQLKY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MJ7MOGJ4HNFZGM424IQYEZQLKY","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":"987067517f7ab5ee7ba3e1ff33b327bc6529b49f423c2ed06f6c6891f73a9be2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-08-13T19:06:48Z","title_canon_sha256":"ea19f8dd9fe042ce169cbd8a872e1e7a33b52dac5de46d01babeac5a568697ed"},"schema_version":"1.0","source":{"id":"1908.04829","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.04829","created_at":"2026-07-05T00:10:41Z"},{"alias_kind":"arxiv_version","alias_value":"1908.04829v1","created_at":"2026-07-05T00:10:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.04829","created_at":"2026-07-05T00:10:41Z"},{"alias_kind":"pith_short_12","alias_value":"MJ7MOGJ4HNFZ","created_at":"2026-07-05T00:10:41Z"},{"alias_kind":"pith_short_16","alias_value":"MJ7MOGJ4HNFZGM42","created_at":"2026-07-05T00:10:41Z"},{"alias_kind":"pith_short_8","alias_value":"MJ7MOGJ4","created_at":"2026-07-05T00:10:41Z"}],"graph_snapshots":[{"event_id":"sha256:1513619afe20c5e334aa1364f4d3954137d444f861250e2463d5fe71693b1f92","target":"graph","created_at":"2026-07-05T00:10:41Z","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/1908.04829/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the results from a new, highly sensitive ($\\Delta T_{mb} \\sim 3 $mK) survey for thermal OH emission at 1665 and 1667 MHz over a dense, 9 x 9-pixel grid covering a $1\\deg$ x $1\\deg$ patch of sky in the direction of $l = 105\\deg, b = +2.50\\deg$ towards the Perseus spiral arm of our Galaxy. We compare our Green Bank Telescope (GBT) 1667 MHz OH results with archival CO J=1-0 observations from the Five College Radio Astronomy Observatory (FCRAO) Outer Galaxy Survey within the velocity range of the Perseus Arm at these galactic coordinates. Out of the 81 statistically-independent pointings","authors_text":"David A. Neufeld, David E. Hogg, Mark G. Wolfire, Michael P. Busch, Philip D. Engelke, Ronald J. Allen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-08-13T19:06:48Z","title":"The Structure of Dark Molecular Gas in the Galaxy -- II. Physical State of \"CO-Dark\" Gas in the Perseus Arm"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.04829","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:a5bc2a9fe7a342d5de2b0678a0b848c3381f9a656dc26e58e9176193ba4a3522","target":"record","created_at":"2026-07-05T00:10:41Z","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":"987067517f7ab5ee7ba3e1ff33b327bc6529b49f423c2ed06f6c6891f73a9be2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-08-13T19:06:48Z","title_canon_sha256":"ea19f8dd9fe042ce169cbd8a872e1e7a33b52dac5de46d01babeac5a568697ed"},"schema_version":"1.0","source":{"id":"1908.04829","kind":"arxiv","version":1}},"canonical_sha256":"627ec7193c3b4b93339ae22182660b563490195f4f8f2996dc5a6f83797c67e7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"627ec7193c3b4b93339ae22182660b563490195f4f8f2996dc5a6f83797c67e7","first_computed_at":"2026-07-05T00:10:41.812809Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:10:41.812809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7mYlcNCELd2RJPAbSuwWkzNcN1LImknBIY0Zueqtki+vfsMBJpmhrXMCx3nBO27vaw+C5t8C4yoQ4bc/wy1/BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:10:41.813216Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.04829","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5bc2a9fe7a342d5de2b0678a0b848c3381f9a656dc26e58e9176193ba4a3522","sha256:1513619afe20c5e334aa1364f4d3954137d444f861250e2463d5fe71693b1f92"],"state_sha256":"723836bc427df8d56aef3ed38fde5dc875ef3c233da0b06c1162ddb75b45e31f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tHIRl/rrbKbkQcK/hz2bP3QJ311hDWhJlK1f6TYzN88Ma8Iv2LnHPPwPoLKr0avJwvCZVFVLehFgZIeihxImAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T12:38:50.382655Z","bundle_sha256":"a45ea11f537c1705465a19a757a11ec881a7172555bdf0e0b165d88843fb330b"}}