{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:CM2NU25XSHT7W5IGSX7C6VYRM7","short_pith_number":"pith:CM2NU25X","canonical_record":{"source":{"id":"1604.05805","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-20T03:47:26Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"3aba4d6190cccbe5f2a17eb03936bebf00993ffde8ec102924a7c65f20a9c531","abstract_canon_sha256":"70e20710c9be419077e563e1ff57c3b63503649530e41ea31769959be4f30c8d"},"schema_version":"1.0"},"canonical_sha256":"1334da6bb791e7fb750695fe2f571167d7590f1c3833550a61e5a4de69427cda","source":{"kind":"arxiv","id":"1604.05805","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.05805","created_at":"2026-05-18T01:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"1604.05805v3","created_at":"2026-05-18T01:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.05805","created_at":"2026-05-18T01:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"CM2NU25XSHT7","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"CM2NU25XSHT7W5IG","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"CM2NU25X","created_at":"2026-05-18T12:30:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:CM2NU25XSHT7W5IGSX7C6VYRM7","target":"record","payload":{"canonical_record":{"source":{"id":"1604.05805","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-20T03:47:26Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"3aba4d6190cccbe5f2a17eb03936bebf00993ffde8ec102924a7c65f20a9c531","abstract_canon_sha256":"70e20710c9be419077e563e1ff57c3b63503649530e41ea31769959be4f30c8d"},"schema_version":"1.0"},"canonical_sha256":"1334da6bb791e7fb750695fe2f571167d7590f1c3833550a61e5a4de69427cda","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:13.260843Z","signature_b64":"tiTrmfbHLC1wEt+/qVPWm4ThiLhXo+p6grbGPUhUpH7/5fUng9hf+Kwi0CfOxNUT+Nfr50yNBbSGvcNQvMeqBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1334da6bb791e7fb750695fe2f571167d7590f1c3833550a61e5a4de69427cda","last_reissued_at":"2026-05-18T01:04:13.260327Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:13.260327Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.05805","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:04:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D4HGPO1X+5R47spP5CBkadFgbZJycgwaguvenNc7Q3lpvpbwkeuZmWXLAiYJLjNdDzKVtCLzi54rs16hSVHkBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:10:45.852835Z"},"content_sha256":"13c1bd7aa46e2ea6c3300e782b481e05309a44e7afefab3f9c5cc4b85aab1723","schema_version":"1.0","event_id":"sha256:13c1bd7aa46e2ea6c3300e782b481e05309a44e7afefab3f9c5cc4b85aab1723"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:CM2NU25XSHT7W5IGSX7C6VYRM7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Herschel/HIFI Spectral Mapping of C$^+$, CH$^+$, and CH in Orion BN/KL: The Prevailing Role of Ultraviolet Irradiation in CH$^+$ Formation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Dariusz C. Lis, David A. Neufeld, Edith Falgarone, Edwin A. Bergin, Gary Melnick, Harshal Gupta, John C. Pearson, Maryvonne Gerin, Patrick W. Morris, Volker Ossenkopf-Okada, Zsofia Nagy","submitted_at":"2016-04-20T03:47:26Z","abstract_excerpt":"The CH$^+$ ion is a key species in the initial steps of interstellar carbon chemistry. Its formation in diverse environments where it is observed is not well understood, however, because the main production pathway is so endothermic (4280 K) that it is unlikely to proceed at the typical temperatures of molecular clouds. We investigation CH$^+$ formation with the first velocity-resolved spectral mapping of the CH$^+$ $J=1-0, 2-1$ rotational transitions, three sets of CH $\\Lambda$-doubled triplet lines, $^{12}$C$^+$ and $^{13}$C$^+$, and CH$_3$OH 835~GHz E-symmetry Q branch transitions, obtained"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.05805","kind":"arxiv","version":3},"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":"2026-05-18T01:04:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m0XsSeA+aR2jbqv2c5J8+C9awUc4zDWGNMqr4lDz/fYXB/tnnG2AkjDE1rOglOCVeLsVg5UQYo1/YQfxPVKtCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:10:45.853499Z"},"content_sha256":"f201d4ebefd6118783679d4e10f26993026f51a408ac3c5f0810ed116747d4a4","schema_version":"1.0","event_id":"sha256:f201d4ebefd6118783679d4e10f26993026f51a408ac3c5f0810ed116747d4a4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CM2NU25XSHT7W5IGSX7C6VYRM7/bundle.json","state_url":"https://pith.science/pith/CM2NU25XSHT7W5IGSX7C6VYRM7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CM2NU25XSHT7W5IGSX7C6VYRM7/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":"2026-05-27T08:10:45Z","links":{"resolver":"https://pith.science/pith/CM2NU25XSHT7W5IGSX7C6VYRM7","bundle":"https://pith.science/pith/CM2NU25XSHT7W5IGSX7C6VYRM7/bundle.json","state":"https://pith.science/pith/CM2NU25XSHT7W5IGSX7C6VYRM7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CM2NU25XSHT7W5IGSX7C6VYRM7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:CM2NU25XSHT7W5IGSX7C6VYRM7","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":"70e20710c9be419077e563e1ff57c3b63503649530e41ea31769959be4f30c8d","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-20T03:47:26Z","title_canon_sha256":"3aba4d6190cccbe5f2a17eb03936bebf00993ffde8ec102924a7c65f20a9c531"},"schema_version":"1.0","source":{"id":"1604.05805","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.05805","created_at":"2026-05-18T01:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"1604.05805v3","created_at":"2026-05-18T01:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.05805","created_at":"2026-05-18T01:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"CM2NU25XSHT7","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"CM2NU25XSHT7W5IG","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"CM2NU25X","created_at":"2026-05-18T12:30:09Z"}],"graph_snapshots":[{"event_id":"sha256:f201d4ebefd6118783679d4e10f26993026f51a408ac3c5f0810ed116747d4a4","target":"graph","created_at":"2026-05-18T01:04:13Z","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":"The CH$^+$ ion is a key species in the initial steps of interstellar carbon chemistry. Its formation in diverse environments where it is observed is not well understood, however, because the main production pathway is so endothermic (4280 K) that it is unlikely to proceed at the typical temperatures of molecular clouds. We investigation CH$^+$ formation with the first velocity-resolved spectral mapping of the CH$^+$ $J=1-0, 2-1$ rotational transitions, three sets of CH $\\Lambda$-doubled triplet lines, $^{12}$C$^+$ and $^{13}$C$^+$, and CH$_3$OH 835~GHz E-symmetry Q branch transitions, obtained","authors_text":"Dariusz C. Lis, David A. Neufeld, Edith Falgarone, Edwin A. Bergin, Gary Melnick, Harshal Gupta, John C. Pearson, Maryvonne Gerin, Patrick W. Morris, Volker Ossenkopf-Okada, Zsofia Nagy","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-20T03:47:26Z","title":"Herschel/HIFI Spectral Mapping of C$^+$, CH$^+$, and CH in Orion BN/KL: The Prevailing Role of Ultraviolet Irradiation in CH$^+$ Formation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.05805","kind":"arxiv","version":3},"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":"sha256:13c1bd7aa46e2ea6c3300e782b481e05309a44e7afefab3f9c5cc4b85aab1723","target":"record","created_at":"2026-05-18T01:04:13Z","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":"70e20710c9be419077e563e1ff57c3b63503649530e41ea31769959be4f30c8d","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-20T03:47:26Z","title_canon_sha256":"3aba4d6190cccbe5f2a17eb03936bebf00993ffde8ec102924a7c65f20a9c531"},"schema_version":"1.0","source":{"id":"1604.05805","kind":"arxiv","version":3}},"canonical_sha256":"1334da6bb791e7fb750695fe2f571167d7590f1c3833550a61e5a4de69427cda","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1334da6bb791e7fb750695fe2f571167d7590f1c3833550a61e5a4de69427cda","first_computed_at":"2026-05-18T01:04:13.260327Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:13.260327Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tiTrmfbHLC1wEt+/qVPWm4ThiLhXo+p6grbGPUhUpH7/5fUng9hf+Kwi0CfOxNUT+Nfr50yNBbSGvcNQvMeqBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:13.260843Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.05805","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13c1bd7aa46e2ea6c3300e782b481e05309a44e7afefab3f9c5cc4b85aab1723","sha256:f201d4ebefd6118783679d4e10f26993026f51a408ac3c5f0810ed116747d4a4"],"state_sha256":"56dcd859e1d23b90ebd7acce5d8206268ddceba00d68303da400756dcc38768f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DVtVt8WFzsFeDtqNR2SqeGODty1jYsco20FFwXTXNi6QEDpfupnCCfLFiAqgv56Ve3HLKAkeXB+okzLWxicbCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T08:10:45.856963Z","bundle_sha256":"475989121e249b994d55051da555ff38ffc4f88891312ad2c994091f5d56900f"}}