{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:ZOCFXIXLVJO7W6AKNOIQTKM32U","short_pith_number":"pith:ZOCFXIXL","canonical_record":{"source":{"id":"1308.4080","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-19T17:26:05Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"9c8a020d48f2c53f6619d7c9b6cda79e2d46ad7ce5274a740b710e6efdaaa668","abstract_canon_sha256":"21588859b0809a117d777dba5ac032b3ebcdcb277b6e989f71a9580c67fa424c"},"schema_version":"1.0"},"canonical_sha256":"cb845ba2ebaa5dfb780a6b9109a99bd52b132e13bda316611afe898350ad1f4b","source":{"kind":"arxiv","id":"1308.4080","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.4080","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"arxiv_version","alias_value":"1308.4080v2","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.4080","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"pith_short_12","alias_value":"ZOCFXIXLVJO7","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZOCFXIXLVJO7W6AK","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZOCFXIXL","created_at":"2026-05-18T12:28:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:ZOCFXIXLVJO7W6AKNOIQTKM32U","target":"record","payload":{"canonical_record":{"source":{"id":"1308.4080","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-19T17:26:05Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"9c8a020d48f2c53f6619d7c9b6cda79e2d46ad7ce5274a740b710e6efdaaa668","abstract_canon_sha256":"21588859b0809a117d777dba5ac032b3ebcdcb277b6e989f71a9580c67fa424c"},"schema_version":"1.0"},"canonical_sha256":"cb845ba2ebaa5dfb780a6b9109a99bd52b132e13bda316611afe898350ad1f4b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:11:46.156613Z","signature_b64":"XBjAuhiRYVeohLBau4pd1kLfCAng61j9WeOyhq+4ZE6Iqjti8nQdaLbrqitLSJSKMMO7ygQA698l9IplwV8jCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb845ba2ebaa5dfb780a6b9109a99bd52b132e13bda316611afe898350ad1f4b","last_reissued_at":"2026-05-18T03:11:46.155707Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:11:46.155707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.4080","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:11:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AMBlTnwGIxUisw3dWRBM92GCeChsFRc4TxoiesBxrcLo2IWNHBq1WtX0i2QjmAeKCOFrPb25oADS9FUO1I9fBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:17:15.811278Z"},"content_sha256":"9c289f7809f5a0e54b8b0ac35bbaff4e1a53d475f4fd8fe51fe988f6ada898bb","schema_version":"1.0","event_id":"sha256:9c289f7809f5a0e54b8b0ac35bbaff4e1a53d475f4fd8fe51fe988f6ada898bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:ZOCFXIXLVJO7W6AKNOIQTKM32U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The abundances of hydrocarbon functional groups in the interstellar medium inferred from laboratory spectra of hydrogenated and methylated polycyclic aromatic hydrocarbons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"astro-ph.GA","authors_text":"Cornelia J\\\"ager, Friedrich Huisken, Hans-Joachim R\\\"ader, Klaus M\\\"ullen, Manfred Friedrich, Mathias Steglich, Thomas Henning, Winfried Plass","submitted_at":"2013-08-19T17:26:05Z","abstract_excerpt":"Infrared (IR) absorption spectra of individual polycyclic aromatic hydrocarbons (PAHs) containing methyl (-CH3), methylene (>CH2), or diamond-like *CH groups and IR spectra of mixtures of methylated and hydrogenated PAHs prepared by gas phase condensation were measured at room temperature (as grains in pellets) and at low temperature (isolated in Ne matrices). In addition, the PAH blends were subjected to an in-depth molecular structure analysis by means of high-performance liquid chromatography, nuclear magnetic resonance spectroscopy, and matrix-assisted laser desorption/ionization time-of-f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.4080","kind":"arxiv","version":2},"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":"2026-05-18T03:11:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t9JE1W7P6uFLCoD7whoOx+aQoZTTMoXWzyM0OCTpRYcOqNcAEHFwLG4WGqC9/5kI+KBiX/XF5rpoC4kL6+qgBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:17:15.811972Z"},"content_sha256":"d57e6267ac254279fb1a0a12b3806f33d555eb8c6353e36cab9b3494bc2fb36e","schema_version":"1.0","event_id":"sha256:d57e6267ac254279fb1a0a12b3806f33d555eb8c6353e36cab9b3494bc2fb36e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZOCFXIXLVJO7W6AKNOIQTKM32U/bundle.json","state_url":"https://pith.science/pith/ZOCFXIXLVJO7W6AKNOIQTKM32U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZOCFXIXLVJO7W6AKNOIQTKM32U/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":"2026-05-26T11:17:15Z","links":{"resolver":"https://pith.science/pith/ZOCFXIXLVJO7W6AKNOIQTKM32U","bundle":"https://pith.science/pith/ZOCFXIXLVJO7W6AKNOIQTKM32U/bundle.json","state":"https://pith.science/pith/ZOCFXIXLVJO7W6AKNOIQTKM32U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZOCFXIXLVJO7W6AKNOIQTKM32U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ZOCFXIXLVJO7W6AKNOIQTKM32U","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":"21588859b0809a117d777dba5ac032b3ebcdcb277b6e989f71a9580c67fa424c","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-19T17:26:05Z","title_canon_sha256":"9c8a020d48f2c53f6619d7c9b6cda79e2d46ad7ce5274a740b710e6efdaaa668"},"schema_version":"1.0","source":{"id":"1308.4080","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.4080","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"arxiv_version","alias_value":"1308.4080v2","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.4080","created_at":"2026-05-18T03:11:46Z"},{"alias_kind":"pith_short_12","alias_value":"ZOCFXIXLVJO7","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZOCFXIXLVJO7W6AK","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZOCFXIXL","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:d57e6267ac254279fb1a0a12b3806f33d555eb8c6353e36cab9b3494bc2fb36e","target":"graph","created_at":"2026-05-18T03:11:46Z","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":"Infrared (IR) absorption spectra of individual polycyclic aromatic hydrocarbons (PAHs) containing methyl (-CH3), methylene (>CH2), or diamond-like *CH groups and IR spectra of mixtures of methylated and hydrogenated PAHs prepared by gas phase condensation were measured at room temperature (as grains in pellets) and at low temperature (isolated in Ne matrices). In addition, the PAH blends were subjected to an in-depth molecular structure analysis by means of high-performance liquid chromatography, nuclear magnetic resonance spectroscopy, and matrix-assisted laser desorption/ionization time-of-f","authors_text":"Cornelia J\\\"ager, Friedrich Huisken, Hans-Joachim R\\\"ader, Klaus M\\\"ullen, Manfred Friedrich, Mathias Steglich, Thomas Henning, Winfried Plass","cross_cats":["physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-19T17:26:05Z","title":"The abundances of hydrocarbon functional groups in the interstellar medium inferred from laboratory spectra of hydrogenated and methylated polycyclic aromatic hydrocarbons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.4080","kind":"arxiv","version":2},"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":"sha256:9c289f7809f5a0e54b8b0ac35bbaff4e1a53d475f4fd8fe51fe988f6ada898bb","target":"record","created_at":"2026-05-18T03:11:46Z","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":"21588859b0809a117d777dba5ac032b3ebcdcb277b6e989f71a9580c67fa424c","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-08-19T17:26:05Z","title_canon_sha256":"9c8a020d48f2c53f6619d7c9b6cda79e2d46ad7ce5274a740b710e6efdaaa668"},"schema_version":"1.0","source":{"id":"1308.4080","kind":"arxiv","version":2}},"canonical_sha256":"cb845ba2ebaa5dfb780a6b9109a99bd52b132e13bda316611afe898350ad1f4b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb845ba2ebaa5dfb780a6b9109a99bd52b132e13bda316611afe898350ad1f4b","first_computed_at":"2026-05-18T03:11:46.155707Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:11:46.155707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XBjAuhiRYVeohLBau4pd1kLfCAng61j9WeOyhq+4ZE6Iqjti8nQdaLbrqitLSJSKMMO7ygQA698l9IplwV8jCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:11:46.156613Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.4080","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9c289f7809f5a0e54b8b0ac35bbaff4e1a53d475f4fd8fe51fe988f6ada898bb","sha256:d57e6267ac254279fb1a0a12b3806f33d555eb8c6353e36cab9b3494bc2fb36e"],"state_sha256":"59ec86dde113c473ba7a83de62ccdae26255cefd51987118711db2a83073b9a6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YHGxhJotP+hDOnY65gQ0bK+UGQwmWHOcyxQ2134ue45Km6Senwb7Emll/TQY/fSFzQ3zYvroFLTgg9XqCyQpBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:17:15.815470Z","bundle_sha256":"d2bc09042843f098a5b716a06883ca7c721eda86ba2b1f50fae582060090dcb2"}}