{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:MQG7YNFM7JR6RV2EW6DNQB557Y","short_pith_number":"pith:MQG7YNFM","canonical_record":{"source":{"id":"1601.06856","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-26T00:43:02Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"26065f0ad8c116f6bb9c7e7f864e7388f1e0cc4227b1dcc068e5a6830e09747e","abstract_canon_sha256":"0441e597c431cff649afdaaee8097796936b10b71c37ab10a4243b434ab256ca"},"schema_version":"1.0"},"canonical_sha256":"640dfc34acfa63e8d744b786d807bdfe05745d03b5303b45fbe781cefd3e686e","source":{"kind":"arxiv","id":"1601.06856","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.06856","created_at":"2026-05-18T01:16:43Z"},{"alias_kind":"arxiv_version","alias_value":"1601.06856v1","created_at":"2026-05-18T01:16:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.06856","created_at":"2026-05-18T01:16:43Z"},{"alias_kind":"pith_short_12","alias_value":"MQG7YNFM7JR6","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MQG7YNFM7JR6RV2E","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MQG7YNFM","created_at":"2026-05-18T12:30:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:MQG7YNFM7JR6RV2EW6DNQB557Y","target":"record","payload":{"canonical_record":{"source":{"id":"1601.06856","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-26T00:43:02Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"26065f0ad8c116f6bb9c7e7f864e7388f1e0cc4227b1dcc068e5a6830e09747e","abstract_canon_sha256":"0441e597c431cff649afdaaee8097796936b10b71c37ab10a4243b434ab256ca"},"schema_version":"1.0"},"canonical_sha256":"640dfc34acfa63e8d744b786d807bdfe05745d03b5303b45fbe781cefd3e686e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:43.113181Z","signature_b64":"k77EuMYIjZALBWMbA29oFkORQtsCO7DjLSL4oU1xF0UhiBJ3y8Ae6zSwGob46SXyGyzfh+3pvWhGT22ZA3pXCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"640dfc34acfa63e8d744b786d807bdfe05745d03b5303b45fbe781cefd3e686e","last_reissued_at":"2026-05-18T01:16:43.112640Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:43.112640Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.06856","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":"2026-05-18T01:16:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2sO6kJceFMPZabYSqdj6cipV3ueoMP0nKs7tcFpkwgmvisp03v9IxZqeFDFMf+63IZ3mPzRdnq4MBh+B/mITAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T19:05:23.502721Z"},"content_sha256":"3dd60a2ba44db8d18618ecbb4e6b869aafaca3fc5b3ccfead2501c8ad676d62d","schema_version":"1.0","event_id":"sha256:3dd60a2ba44db8d18618ecbb4e6b869aafaca3fc5b3ccfead2501c8ad676d62d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:MQG7YNFM7JR6RV2EW6DNQB557Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Single and Double Photoionization and Photodissociation of Toluene by Soft X-rays in Circumstellar Environment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"astro-ph.SR","authors_text":"((1) Valongo Observatory, (2) Chemical Institute, (3) Physics Institute, Federal University of Rio de Janeiro), F. Fantuzzi (2), H. M. Boechat-Roberty (1), M. A. C. Nascimento (2), T. Monfredini (1), W. Wolff (3)","submitted_at":"2016-01-26T00:43:02Z","abstract_excerpt":"The formation of polycyclic aromatic hydrocarbons (PAHs) and their methyl derivatives occurs mainly in the dust shells of asymptotic giant branch (AGB) stars. The bands at 3.3 and 3.4 $\\mu$m, observed in infrared emission spectra of several objects, are attributed C-H vibrational modes in aromatic and aliphatic structures, respectively. In general, the feature at 3.3 $\\mu$m is more intense than the 3.4 $\\mu$m. Photoionization and photodissociation processes of toluene, the precursor of methylated PAHs, were studied using synchrotron radiation at soft X-ray energies around the carbon K edge wit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.06856","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":"2026-05-18T01:16:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b/C9zqIFK7DA65deuQ8xSHUIRM2M3uxvyftSxBAb54l2ODIsD7PuROFkK+1z6vJgu4uID3FZv2wVyxSoM1S9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T19:05:23.503074Z"},"content_sha256":"720ba7c7634405b7f372d0f470aaad9ca2d0859aa5cae3baa873ff4e16d733eb","schema_version":"1.0","event_id":"sha256:720ba7c7634405b7f372d0f470aaad9ca2d0859aa5cae3baa873ff4e16d733eb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MQG7YNFM7JR6RV2EW6DNQB557Y/bundle.json","state_url":"https://pith.science/pith/MQG7YNFM7JR6RV2EW6DNQB557Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MQG7YNFM7JR6RV2EW6DNQB557Y/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":"2026-06-04T19:05:23Z","links":{"resolver":"https://pith.science/pith/MQG7YNFM7JR6RV2EW6DNQB557Y","bundle":"https://pith.science/pith/MQG7YNFM7JR6RV2EW6DNQB557Y/bundle.json","state":"https://pith.science/pith/MQG7YNFM7JR6RV2EW6DNQB557Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MQG7YNFM7JR6RV2EW6DNQB557Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:MQG7YNFM7JR6RV2EW6DNQB557Y","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":"0441e597c431cff649afdaaee8097796936b10b71c37ab10a4243b434ab256ca","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-26T00:43:02Z","title_canon_sha256":"26065f0ad8c116f6bb9c7e7f864e7388f1e0cc4227b1dcc068e5a6830e09747e"},"schema_version":"1.0","source":{"id":"1601.06856","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.06856","created_at":"2026-05-18T01:16:43Z"},{"alias_kind":"arxiv_version","alias_value":"1601.06856v1","created_at":"2026-05-18T01:16:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.06856","created_at":"2026-05-18T01:16:43Z"},{"alias_kind":"pith_short_12","alias_value":"MQG7YNFM7JR6","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_16","alias_value":"MQG7YNFM7JR6RV2E","created_at":"2026-05-18T12:30:32Z"},{"alias_kind":"pith_short_8","alias_value":"MQG7YNFM","created_at":"2026-05-18T12:30:32Z"}],"graph_snapshots":[{"event_id":"sha256:720ba7c7634405b7f372d0f470aaad9ca2d0859aa5cae3baa873ff4e16d733eb","target":"graph","created_at":"2026-05-18T01:16:43Z","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 formation of polycyclic aromatic hydrocarbons (PAHs) and their methyl derivatives occurs mainly in the dust shells of asymptotic giant branch (AGB) stars. The bands at 3.3 and 3.4 $\\mu$m, observed in infrared emission spectra of several objects, are attributed C-H vibrational modes in aromatic and aliphatic structures, respectively. In general, the feature at 3.3 $\\mu$m is more intense than the 3.4 $\\mu$m. Photoionization and photodissociation processes of toluene, the precursor of methylated PAHs, were studied using synchrotron radiation at soft X-ray energies around the carbon K edge wit","authors_text":"((1) Valongo Observatory, (2) Chemical Institute, (3) Physics Institute, Federal University of Rio de Janeiro), F. Fantuzzi (2), H. M. Boechat-Roberty (1), M. A. C. Nascimento (2), T. Monfredini (1), W. Wolff (3)","cross_cats":["physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-26T00:43:02Z","title":"Single and Double Photoionization and Photodissociation of Toluene by Soft X-rays in Circumstellar Environment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.06856","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":"sha256:3dd60a2ba44db8d18618ecbb4e6b869aafaca3fc5b3ccfead2501c8ad676d62d","target":"record","created_at":"2026-05-18T01:16:43Z","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":"0441e597c431cff649afdaaee8097796936b10b71c37ab10a4243b434ab256ca","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-26T00:43:02Z","title_canon_sha256":"26065f0ad8c116f6bb9c7e7f864e7388f1e0cc4227b1dcc068e5a6830e09747e"},"schema_version":"1.0","source":{"id":"1601.06856","kind":"arxiv","version":1}},"canonical_sha256":"640dfc34acfa63e8d744b786d807bdfe05745d03b5303b45fbe781cefd3e686e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"640dfc34acfa63e8d744b786d807bdfe05745d03b5303b45fbe781cefd3e686e","first_computed_at":"2026-05-18T01:16:43.112640Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:43.112640Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k77EuMYIjZALBWMbA29oFkORQtsCO7DjLSL4oU1xF0UhiBJ3y8Ae6zSwGob46SXyGyzfh+3pvWhGT22ZA3pXCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:43.113181Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.06856","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3dd60a2ba44db8d18618ecbb4e6b869aafaca3fc5b3ccfead2501c8ad676d62d","sha256:720ba7c7634405b7f372d0f470aaad9ca2d0859aa5cae3baa873ff4e16d733eb"],"state_sha256":"9eeffff7fe707c11fcac88548f8f33fb6283b9db4576b4f0dce857c81b36793e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uEgpmRyBB+tfX1vlhQLs9Uatj06lMFR+13h2eXnitaZawhnIkg8djef2TD+vstU4uLBPMRWXboUfXcKK0qQKCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T19:05:23.504975Z","bundle_sha256":"1a6d616f8fae0d387d4cebd71921f66a342d21bc3ba5d47a1ed33b26b42634bd"}}