{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:IPGOPRDPPRIMGDX2DKHB6PVMB2","short_pith_number":"pith:IPGOPRDP","canonical_record":{"source":{"id":"1705.01939","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-05-04T14:21:29Z","cross_cats_sorted":[],"title_canon_sha256":"18885416eeaf5733ca8bf42ac35c12ab23c0db599e9aa8054040dfc8c3f0fc82","abstract_canon_sha256":"757ef33b045afc573b3ba4b8e1adef364a9e67e06637896a77fede601e3bc720"},"schema_version":"1.0"},"canonical_sha256":"43cce7c46f7c50c30efa1a8e1f3eac0ead588ab558b808cc7a670d397219f34e","source":{"kind":"arxiv","id":"1705.01939","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.01939","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"arxiv_version","alias_value":"1705.01939v1","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.01939","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"pith_short_12","alias_value":"IPGOPRDPPRIM","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IPGOPRDPPRIMGDX2","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IPGOPRDP","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:IPGOPRDPPRIMGDX2DKHB6PVMB2","target":"record","payload":{"canonical_record":{"source":{"id":"1705.01939","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-05-04T14:21:29Z","cross_cats_sorted":[],"title_canon_sha256":"18885416eeaf5733ca8bf42ac35c12ab23c0db599e9aa8054040dfc8c3f0fc82","abstract_canon_sha256":"757ef33b045afc573b3ba4b8e1adef364a9e67e06637896a77fede601e3bc720"},"schema_version":"1.0"},"canonical_sha256":"43cce7c46f7c50c30efa1a8e1f3eac0ead588ab558b808cc7a670d397219f34e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:52.989656Z","signature_b64":"jJ1MCrjUZM8KkJ31NX8N+odaxNp3Np3Y2zOYUDFbdi8CtcwhrTCoAGAbIB5tvk70hvvhMITmwe6iexgYWki9BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"43cce7c46f7c50c30efa1a8e1f3eac0ead588ab558b808cc7a670d397219f34e","last_reissued_at":"2026-05-18T00:38:52.989030Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:52.989030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.01939","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":"2026-05-18T00:38:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dkN5p366GkYetNK+mhwqGlxeB4aL9m6EPYdPoBPip9G+FY2ueLE8GbpEB79skq6j2UX+MF9SHIH3xUP75nuaDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:30:03.230876Z"},"content_sha256":"651847f7fc742f25046bbae522844b74f62e2b29f74b73ea7b1d1cbb68d873ad","schema_version":"1.0","event_id":"sha256:651847f7fc742f25046bbae522844b74f62e2b29f74b73ea7b1d1cbb68d873ad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:IPGOPRDPPRIMGDX2DKHB6PVMB2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Excited state characterization of carbonyl containing carotenoids: a comparison between single and multireference descriptions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Benedetta Mennucci, Riccardo Spezia, Stefan Knecht","submitted_at":"2017-05-04T14:21:29Z","abstract_excerpt":"Carotenoids can play multiple roles in biological photoreceptors thanks to their rich photophysics. In the present work, we have investigated six of the most common carbonyl containing carotenoids: Echinenone, Canthaxanthin, Astaxanthin, Fucoxanthin, Capsanthin and Capsorubin. Their excitation properties are investigated by means of a hybrid density functional theory (DFT) and multireference configuration interaction (MRCI) approach to elucidate the role of the carbonyl group: the bright transition is of {\\pi}{\\pi}* character, as expected, but the presence of a C=O moiety reduces the energy of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.01939","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":"2026-05-18T00:38:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KfP1N0EFR2PPJjg982WYx6ZQ6XTzD24uI8STYp0mdhTDMWkz3tKAPOSWI9P0FYUUmjOpl2sq5r0dm+HKRvPqDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:30:03.231501Z"},"content_sha256":"39f46be262266854db024f3c7b6299c0808fc20aadb2b8fdf9160320ab4c0bdc","schema_version":"1.0","event_id":"sha256:39f46be262266854db024f3c7b6299c0808fc20aadb2b8fdf9160320ab4c0bdc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IPGOPRDPPRIMGDX2DKHB6PVMB2/bundle.json","state_url":"https://pith.science/pith/IPGOPRDPPRIMGDX2DKHB6PVMB2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IPGOPRDPPRIMGDX2DKHB6PVMB2/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":"2026-05-28T08:30:03Z","links":{"resolver":"https://pith.science/pith/IPGOPRDPPRIMGDX2DKHB6PVMB2","bundle":"https://pith.science/pith/IPGOPRDPPRIMGDX2DKHB6PVMB2/bundle.json","state":"https://pith.science/pith/IPGOPRDPPRIMGDX2DKHB6PVMB2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IPGOPRDPPRIMGDX2DKHB6PVMB2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:IPGOPRDPPRIMGDX2DKHB6PVMB2","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":"757ef33b045afc573b3ba4b8e1adef364a9e67e06637896a77fede601e3bc720","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-05-04T14:21:29Z","title_canon_sha256":"18885416eeaf5733ca8bf42ac35c12ab23c0db599e9aa8054040dfc8c3f0fc82"},"schema_version":"1.0","source":{"id":"1705.01939","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.01939","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"arxiv_version","alias_value":"1705.01939v1","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.01939","created_at":"2026-05-18T00:38:52Z"},{"alias_kind":"pith_short_12","alias_value":"IPGOPRDPPRIM","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IPGOPRDPPRIMGDX2","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IPGOPRDP","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:39f46be262266854db024f3c7b6299c0808fc20aadb2b8fdf9160320ab4c0bdc","target":"graph","created_at":"2026-05-18T00:38:52Z","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":"Carotenoids can play multiple roles in biological photoreceptors thanks to their rich photophysics. In the present work, we have investigated six of the most common carbonyl containing carotenoids: Echinenone, Canthaxanthin, Astaxanthin, Fucoxanthin, Capsanthin and Capsorubin. Their excitation properties are investigated by means of a hybrid density functional theory (DFT) and multireference configuration interaction (MRCI) approach to elucidate the role of the carbonyl group: the bright transition is of {\\pi}{\\pi}* character, as expected, but the presence of a C=O moiety reduces the energy of","authors_text":"Benedetta Mennucci, Riccardo Spezia, Stefan Knecht","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-05-04T14:21:29Z","title":"Excited state characterization of carbonyl containing carotenoids: a comparison between single and multireference descriptions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.01939","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":"sha256:651847f7fc742f25046bbae522844b74f62e2b29f74b73ea7b1d1cbb68d873ad","target":"record","created_at":"2026-05-18T00:38:52Z","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":"757ef33b045afc573b3ba4b8e1adef364a9e67e06637896a77fede601e3bc720","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2017-05-04T14:21:29Z","title_canon_sha256":"18885416eeaf5733ca8bf42ac35c12ab23c0db599e9aa8054040dfc8c3f0fc82"},"schema_version":"1.0","source":{"id":"1705.01939","kind":"arxiv","version":1}},"canonical_sha256":"43cce7c46f7c50c30efa1a8e1f3eac0ead588ab558b808cc7a670d397219f34e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43cce7c46f7c50c30efa1a8e1f3eac0ead588ab558b808cc7a670d397219f34e","first_computed_at":"2026-05-18T00:38:52.989030Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:52.989030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jJ1MCrjUZM8KkJ31NX8N+odaxNp3Np3Y2zOYUDFbdi8CtcwhrTCoAGAbIB5tvk70hvvhMITmwe6iexgYWki9BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:52.989656Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.01939","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:651847f7fc742f25046bbae522844b74f62e2b29f74b73ea7b1d1cbb68d873ad","sha256:39f46be262266854db024f3c7b6299c0808fc20aadb2b8fdf9160320ab4c0bdc"],"state_sha256":"e04d964677250b2385c200f39e5678b1f7acb43f5a4dd5474976ad003ed3f321"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7BS/+Ot+70cczUC7S5InN5n9puvqoCrChPlOJcz2MOCqY6k1qJnZJg3jaN7EzqrGq9pfiVDWTIwMJPPJcPuWAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:30:03.235072Z","bundle_sha256":"ca2c8e54b6bfb7871d0ac18ae70b016b49646442c8a4c3e4f5f98450cb93939d"}}