{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:GIU6LXA4ZERPVG5TBGAHAVTCWN","short_pith_number":"pith:GIU6LXA4","canonical_record":{"source":{"id":"1604.03059","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-11T18:40:49Z","cross_cats_sorted":[],"title_canon_sha256":"14aa4febc0f382d5ffe63fc9545c5e3aec33bfa635a378fc673a7373f17faab9","abstract_canon_sha256":"67e0ee50fbdcd3d868ebc59e7e9196f1ce49a131e8876ffc74906b0bde044bfd"},"schema_version":"1.0"},"canonical_sha256":"3229e5dc1cc922fa9bb30980705662b37e8c846f054ce2654817404eef843b10","source":{"kind":"arxiv","id":"1604.03059","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.03059","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"arxiv_version","alias_value":"1604.03059v1","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.03059","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"pith_short_12","alias_value":"GIU6LXA4ZERP","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GIU6LXA4ZERPVG5T","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GIU6LXA4","created_at":"2026-05-18T12:30:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:GIU6LXA4ZERPVG5TBGAHAVTCWN","target":"record","payload":{"canonical_record":{"source":{"id":"1604.03059","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-11T18:40:49Z","cross_cats_sorted":[],"title_canon_sha256":"14aa4febc0f382d5ffe63fc9545c5e3aec33bfa635a378fc673a7373f17faab9","abstract_canon_sha256":"67e0ee50fbdcd3d868ebc59e7e9196f1ce49a131e8876ffc74906b0bde044bfd"},"schema_version":"1.0"},"canonical_sha256":"3229e5dc1cc922fa9bb30980705662b37e8c846f054ce2654817404eef843b10","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:12.894181Z","signature_b64":"L7n7d1FtejCp+RVIqbzrC2qIRt/Z6ETR+3vC8mFLdIlRZN8vYWQpYMAOt8mohvECJlbiU0GZCEA8B7E3hhwKBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3229e5dc1cc922fa9bb30980705662b37e8c846f054ce2654817404eef843b10","last_reissued_at":"2026-05-18T01:16:12.893495Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:12.893495Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.03059","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":"2026-05-18T01:16:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MeECsvehC19GPCqMz7Rrifrr8oABuLxoM3ixFbWmWdJbLTWmAGb/NyTKUaqe/AoeYCY3pdoCLlqq+nt8tJO5DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:24:03.265477Z"},"content_sha256":"f0ec9c4ef45257c4aace3c64001de2f1a4374cb8a3a2952bc25bfddd3aded987","schema_version":"1.0","event_id":"sha256:f0ec9c4ef45257c4aace3c64001de2f1a4374cb8a3a2952bc25bfddd3aded987"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:GIU6LXA4ZERPVG5TBGAHAVTCWN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radiative Transfer of HCN: Interpreting observations of hyperfine anomalies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A.M. Mullins, B. Wiles, E.R. Keto, J. Barrett, M.P. Redman, N. Guegan, R.M. Loughnane","submitted_at":"2016-04-11T18:40:49Z","abstract_excerpt":"Molecules with hyperfine splitting of their rotational line spectra are useful probes of optical depth, via the relative line strengths of their hyperfine components.The hyperfine splitting is particularly advantageous in interpreting the physical conditions of the emitting gas because with a second rotational transition, both gas density and temperature can be derived. For HCN however, the relative strengths of the hyperfine lines are anomalous. They appear in ratios which can vary significantly from source to source, and are inconsistent with local thermodynamic equilibrium. This is the HCN "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.03059","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":"2026-05-18T01:16:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uDYuhTqJvCH+Fu3+U4e1BpAiKi8CNz4061t/V11GzAwigFBFfRaUiEIAjDKIs6YRUc7+3SiWsCA7caShOZ3TBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T10:24:03.265830Z"},"content_sha256":"7beb54698aa95284a3f8ad1d9bbcb4649bb963f829ddd91401524611b1eb3718","schema_version":"1.0","event_id":"sha256:7beb54698aa95284a3f8ad1d9bbcb4649bb963f829ddd91401524611b1eb3718"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GIU6LXA4ZERPVG5TBGAHAVTCWN/bundle.json","state_url":"https://pith.science/pith/GIU6LXA4ZERPVG5TBGAHAVTCWN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GIU6LXA4ZERPVG5TBGAHAVTCWN/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":"2026-05-28T10:24:03Z","links":{"resolver":"https://pith.science/pith/GIU6LXA4ZERPVG5TBGAHAVTCWN","bundle":"https://pith.science/pith/GIU6LXA4ZERPVG5TBGAHAVTCWN/bundle.json","state":"https://pith.science/pith/GIU6LXA4ZERPVG5TBGAHAVTCWN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GIU6LXA4ZERPVG5TBGAHAVTCWN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:GIU6LXA4ZERPVG5TBGAHAVTCWN","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":"67e0ee50fbdcd3d868ebc59e7e9196f1ce49a131e8876ffc74906b0bde044bfd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-11T18:40:49Z","title_canon_sha256":"14aa4febc0f382d5ffe63fc9545c5e3aec33bfa635a378fc673a7373f17faab9"},"schema_version":"1.0","source":{"id":"1604.03059","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.03059","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"arxiv_version","alias_value":"1604.03059v1","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.03059","created_at":"2026-05-18T01:16:12Z"},{"alias_kind":"pith_short_12","alias_value":"GIU6LXA4ZERP","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GIU6LXA4ZERPVG5T","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GIU6LXA4","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:7beb54698aa95284a3f8ad1d9bbcb4649bb963f829ddd91401524611b1eb3718","target":"graph","created_at":"2026-05-18T01:16:12Z","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":"Molecules with hyperfine splitting of their rotational line spectra are useful probes of optical depth, via the relative line strengths of their hyperfine components.The hyperfine splitting is particularly advantageous in interpreting the physical conditions of the emitting gas because with a second rotational transition, both gas density and temperature can be derived. For HCN however, the relative strengths of the hyperfine lines are anomalous. They appear in ratios which can vary significantly from source to source, and are inconsistent with local thermodynamic equilibrium. This is the HCN ","authors_text":"A.M. Mullins, B. Wiles, E.R. Keto, J. Barrett, M.P. Redman, N. Guegan, R.M. Loughnane","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-11T18:40:49Z","title":"Radiative Transfer of HCN: Interpreting observations of hyperfine anomalies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.03059","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:f0ec9c4ef45257c4aace3c64001de2f1a4374cb8a3a2952bc25bfddd3aded987","target":"record","created_at":"2026-05-18T01:16:12Z","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":"67e0ee50fbdcd3d868ebc59e7e9196f1ce49a131e8876ffc74906b0bde044bfd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-11T18:40:49Z","title_canon_sha256":"14aa4febc0f382d5ffe63fc9545c5e3aec33bfa635a378fc673a7373f17faab9"},"schema_version":"1.0","source":{"id":"1604.03059","kind":"arxiv","version":1}},"canonical_sha256":"3229e5dc1cc922fa9bb30980705662b37e8c846f054ce2654817404eef843b10","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3229e5dc1cc922fa9bb30980705662b37e8c846f054ce2654817404eef843b10","first_computed_at":"2026-05-18T01:16:12.893495Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:12.893495Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L7n7d1FtejCp+RVIqbzrC2qIRt/Z6ETR+3vC8mFLdIlRZN8vYWQpYMAOt8mohvECJlbiU0GZCEA8B7E3hhwKBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:12.894181Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.03059","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f0ec9c4ef45257c4aace3c64001de2f1a4374cb8a3a2952bc25bfddd3aded987","sha256:7beb54698aa95284a3f8ad1d9bbcb4649bb963f829ddd91401524611b1eb3718"],"state_sha256":"3fe3f831566464e51e346374ae6a856cfee744a7113ca0a5e8ce9cf0fbdb5638"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"asR51ibq9RB+3xScDh0unmpZLWKFZOjI+t+pOAlJ/hnvNUppAvWOoA6nFoMgu5gBigLIohtTcjKbaEXhE1DfBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T10:24:03.267832Z","bundle_sha256":"26474299becd368dd70ab2caf9f7d8021d250648c37ce273758ec3a802c83298"}}