{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:VUCMCIWR4ER5UVS3RAP6ID53LQ","short_pith_number":"pith:VUCMCIWR","canonical_record":{"source":{"id":"1407.7778","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-29T17:11:25Z","cross_cats_sorted":[],"title_canon_sha256":"d2ccc2962c230d1c5e77e3c2bf13593ecb91e8345a1b9e7124b351ef12f03693","abstract_canon_sha256":"506d448de0f9da476524775e597fe5490d1ee34e93e0cea947daa90e9727b8da"},"schema_version":"1.0"},"canonical_sha256":"ad04c122d1e123da565b881fe40fbb5c21fdca142853960e4a7d064ac46fe5ae","source":{"kind":"arxiv","id":"1407.7778","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.7778","created_at":"2026-05-18T01:42:28Z"},{"alias_kind":"arxiv_version","alias_value":"1407.7778v1","created_at":"2026-05-18T01:42:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.7778","created_at":"2026-05-18T01:42:28Z"},{"alias_kind":"pith_short_12","alias_value":"VUCMCIWR4ER5","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"VUCMCIWR4ER5UVS3","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"VUCMCIWR","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:VUCMCIWR4ER5UVS3RAP6ID53LQ","target":"record","payload":{"canonical_record":{"source":{"id":"1407.7778","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-29T17:11:25Z","cross_cats_sorted":[],"title_canon_sha256":"d2ccc2962c230d1c5e77e3c2bf13593ecb91e8345a1b9e7124b351ef12f03693","abstract_canon_sha256":"506d448de0f9da476524775e597fe5490d1ee34e93e0cea947daa90e9727b8da"},"schema_version":"1.0"},"canonical_sha256":"ad04c122d1e123da565b881fe40fbb5c21fdca142853960e4a7d064ac46fe5ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:28.762945Z","signature_b64":"pr95fdV80oThaxmf+zcAxY5BsRIKNwXt6mIrH3kGdKo5ZTfDMkgmoQTorAIfABnpgrDNkIOP/HS0BxtA+LhQDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad04c122d1e123da565b881fe40fbb5c21fdca142853960e4a7d064ac46fe5ae","last_reissued_at":"2026-05-18T01:42:28.762150Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:28.762150Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.7778","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":"2026-05-18T01:42:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gCBI50Dc1pJWsSaS76qTcz3kmoZURYP1iELN9YegHX627YAY4vFxHw/w4gaIZn1p/CKYYsosctPNgvH7BpiaDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:45:27.802260Z"},"content_sha256":"7e8fea600b727e61b10cd6331818dbe7858b96b10638fbe2078c1be61a85602e","schema_version":"1.0","event_id":"sha256:7e8fea600b727e61b10cd6331818dbe7858b96b10638fbe2078c1be61a85602e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:VUCMCIWR4ER5UVS3RAP6ID53LQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cold and warm atomic gas around the Perseus molecular cloud I: Basic Properties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Carl Heiles, Claire E. Murray, Jesse Miller, Min-Young Lee, Snezana Stanimirovic","submitted_at":"2014-07-29T17:11:25Z","abstract_excerpt":"(Abridged) Using the Arecibo Observatory we have obtained neutral hydrogen (HI) absorption and emission spectral pairs in the direction of 26 background radio continuum sources in the vicinity of the Perseus molecular cloud. Strong absorption lines were detected in all cases allowing us to estimate spin temperature (T_s) and optical depth for 107 individual Gaussian components along these lines of sight. Basic properties of individual HI clouds (spin temperature, optical depth, and the column density of the cold and warm neutral medium, CNM and WNM) in and around Perseus are very similar to th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.7778","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":"2026-05-18T01:42:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O1r/C4hGlIdthoQVOD+l7ndUsMklQhibaowN2K9CiUAAWye1UEcYvExJ9AdEGDJRXlUhR4vxnqnB+1VWwrveAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:45:27.802653Z"},"content_sha256":"58d0124b41762cb3e3bea70b7b6b7f3e1813d0e5fdaaa0590449407867a326bc","schema_version":"1.0","event_id":"sha256:58d0124b41762cb3e3bea70b7b6b7f3e1813d0e5fdaaa0590449407867a326bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VUCMCIWR4ER5UVS3RAP6ID53LQ/bundle.json","state_url":"https://pith.science/pith/VUCMCIWR4ER5UVS3RAP6ID53LQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VUCMCIWR4ER5UVS3RAP6ID53LQ/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":"2026-05-27T21:45:27Z","links":{"resolver":"https://pith.science/pith/VUCMCIWR4ER5UVS3RAP6ID53LQ","bundle":"https://pith.science/pith/VUCMCIWR4ER5UVS3RAP6ID53LQ/bundle.json","state":"https://pith.science/pith/VUCMCIWR4ER5UVS3RAP6ID53LQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VUCMCIWR4ER5UVS3RAP6ID53LQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:VUCMCIWR4ER5UVS3RAP6ID53LQ","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":"506d448de0f9da476524775e597fe5490d1ee34e93e0cea947daa90e9727b8da","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-29T17:11:25Z","title_canon_sha256":"d2ccc2962c230d1c5e77e3c2bf13593ecb91e8345a1b9e7124b351ef12f03693"},"schema_version":"1.0","source":{"id":"1407.7778","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.7778","created_at":"2026-05-18T01:42:28Z"},{"alias_kind":"arxiv_version","alias_value":"1407.7778v1","created_at":"2026-05-18T01:42:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.7778","created_at":"2026-05-18T01:42:28Z"},{"alias_kind":"pith_short_12","alias_value":"VUCMCIWR4ER5","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"VUCMCIWR4ER5UVS3","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"VUCMCIWR","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:58d0124b41762cb3e3bea70b7b6b7f3e1813d0e5fdaaa0590449407867a326bc","target":"graph","created_at":"2026-05-18T01:42:28Z","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":"(Abridged) Using the Arecibo Observatory we have obtained neutral hydrogen (HI) absorption and emission spectral pairs in the direction of 26 background radio continuum sources in the vicinity of the Perseus molecular cloud. Strong absorption lines were detected in all cases allowing us to estimate spin temperature (T_s) and optical depth for 107 individual Gaussian components along these lines of sight. Basic properties of individual HI clouds (spin temperature, optical depth, and the column density of the cold and warm neutral medium, CNM and WNM) in and around Perseus are very similar to th","authors_text":"Carl Heiles, Claire E. Murray, Jesse Miller, Min-Young Lee, Snezana Stanimirovic","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-29T17:11:25Z","title":"Cold and warm atomic gas around the Perseus molecular cloud I: Basic Properties"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.7778","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":"sha256:7e8fea600b727e61b10cd6331818dbe7858b96b10638fbe2078c1be61a85602e","target":"record","created_at":"2026-05-18T01:42:28Z","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":"506d448de0f9da476524775e597fe5490d1ee34e93e0cea947daa90e9727b8da","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-29T17:11:25Z","title_canon_sha256":"d2ccc2962c230d1c5e77e3c2bf13593ecb91e8345a1b9e7124b351ef12f03693"},"schema_version":"1.0","source":{"id":"1407.7778","kind":"arxiv","version":1}},"canonical_sha256":"ad04c122d1e123da565b881fe40fbb5c21fdca142853960e4a7d064ac46fe5ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad04c122d1e123da565b881fe40fbb5c21fdca142853960e4a7d064ac46fe5ae","first_computed_at":"2026-05-18T01:42:28.762150Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:28.762150Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pr95fdV80oThaxmf+zcAxY5BsRIKNwXt6mIrH3kGdKo5ZTfDMkgmoQTorAIfABnpgrDNkIOP/HS0BxtA+LhQDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:28.762945Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.7778","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7e8fea600b727e61b10cd6331818dbe7858b96b10638fbe2078c1be61a85602e","sha256:58d0124b41762cb3e3bea70b7b6b7f3e1813d0e5fdaaa0590449407867a326bc"],"state_sha256":"9e37066d1a1baa9f53a8e3bbff819888dc4144c651be6ed6070a0e35bd60f9d0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NvNTmFcmdVIhyupAddX66qbys9/lnm8EwyF1f2XiZgBBXQluBX0OyifeFasQXp8r7xRyTZ+jU1T7LMKL/M43Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T21:45:27.804810Z","bundle_sha256":"c690f5e126dc56007939440d202442101fb715f9b78a8f6d85bb886cc73eb96b"}}