{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:ECVXFCZII4BLDP7TSWNRG2RSZB","short_pith_number":"pith:ECVXFCZI","canonical_record":{"source":{"id":"1612.05399","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-12-16T09:20:37Z","cross_cats_sorted":[],"title_canon_sha256":"7df5947e2fd93623a545c0d0ba5b1ea93c43aa202ca593c96575b9c7f408dc4d","abstract_canon_sha256":"b34eac3d2449e987f850763bfa9f5595ddc6a89279005d1e1118aeeff9c15e23"},"schema_version":"1.0"},"canonical_sha256":"20ab728b284702b1bff3959b136a32c84dfd93a25f9f5c8e3bd20d9e63608069","source":{"kind":"arxiv","id":"1612.05399","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.05399","created_at":"2026-05-18T00:54:51Z"},{"alias_kind":"arxiv_version","alias_value":"1612.05399v1","created_at":"2026-05-18T00:54:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.05399","created_at":"2026-05-18T00:54:51Z"},{"alias_kind":"pith_short_12","alias_value":"ECVXFCZII4BL","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"ECVXFCZII4BLDP7T","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"ECVXFCZI","created_at":"2026-05-18T12:30:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:ECVXFCZII4BLDP7TSWNRG2RSZB","target":"record","payload":{"canonical_record":{"source":{"id":"1612.05399","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-12-16T09:20:37Z","cross_cats_sorted":[],"title_canon_sha256":"7df5947e2fd93623a545c0d0ba5b1ea93c43aa202ca593c96575b9c7f408dc4d","abstract_canon_sha256":"b34eac3d2449e987f850763bfa9f5595ddc6a89279005d1e1118aeeff9c15e23"},"schema_version":"1.0"},"canonical_sha256":"20ab728b284702b1bff3959b136a32c84dfd93a25f9f5c8e3bd20d9e63608069","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:54:51.872817Z","signature_b64":"0iw1erWQSsdZGY/Ex8Str0FAZ8LRWjwDBaQjpTdnkqGEormeTNwDwwx2s3Udee2cYi5iAHJg55i1ssKc1SdqBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20ab728b284702b1bff3959b136a32c84dfd93a25f9f5c8e3bd20d9e63608069","last_reissued_at":"2026-05-18T00:54:51.872224Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:54:51.872224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1612.05399","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":"2026-05-18T00:54:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ImOAeTwV7IUij7dXOccr9Odfwv0v8yYfAZJ7zpanNBm/ZiyCX5SkfAYY31r4fdYBGLtOFpR64jblprq6rG87Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:41:59.547277Z"},"content_sha256":"3dff3e7f89a46be4c72737d25e9486545c346c16f9cc4bf6ccf1056ab2163526","schema_version":"1.0","event_id":"sha256:3dff3e7f89a46be4c72737d25e9486545c346c16f9cc4bf6ccf1056ab2163526"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:ECVXFCZII4BLDP7TSWNRG2RSZB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical properties of azobenzene-functionalized self-assembled monolayers: Intermolecular coupling and many-body interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Caterina Cocchi, Claudia Draxl, Cornelius Gahl, Martin Weinelt, Thomas Moldt","submitted_at":"2016-12-16T09:20:37Z","abstract_excerpt":"In a joint theoretical and experimental work the optical properties of azobenzene-functionalized self-assembled monolayers (SAMs) are studied at different molecular packing densities. Our results, based on density-functional and many-body perturbation theory, as well as on differential reflectance (DR) spectroscopy, shed light on the microscopic mechanisms ruling photo-absorption in these systems. While the optical excitations are intrinsically excitonic in nature, regardless of the molecular concentration, in densely-packed SAMs intermolecular coupling and local-field effects are responsible "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.05399","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":"2026-05-18T00:54:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SvpdhSkmZ3kvUqkFYWsOUJrhQJrRpUQLR4odGDghsY7wXQWrfJymlzyjcYnNG4/AOEuQuk6TN2jGd7Ar1GqdAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:41:59.547690Z"},"content_sha256":"908c732c649d1144acecc56d827e73ec1b34ab8c2d0e1f7eceeda41bff19528f","schema_version":"1.0","event_id":"sha256:908c732c649d1144acecc56d827e73ec1b34ab8c2d0e1f7eceeda41bff19528f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ECVXFCZII4BLDP7TSWNRG2RSZB/bundle.json","state_url":"https://pith.science/pith/ECVXFCZII4BLDP7TSWNRG2RSZB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ECVXFCZII4BLDP7TSWNRG2RSZB/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":"2026-05-27T12:41:59Z","links":{"resolver":"https://pith.science/pith/ECVXFCZII4BLDP7TSWNRG2RSZB","bundle":"https://pith.science/pith/ECVXFCZII4BLDP7TSWNRG2RSZB/bundle.json","state":"https://pith.science/pith/ECVXFCZII4BLDP7TSWNRG2RSZB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ECVXFCZII4BLDP7TSWNRG2RSZB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ECVXFCZII4BLDP7TSWNRG2RSZB","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":"b34eac3d2449e987f850763bfa9f5595ddc6a89279005d1e1118aeeff9c15e23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-12-16T09:20:37Z","title_canon_sha256":"7df5947e2fd93623a545c0d0ba5b1ea93c43aa202ca593c96575b9c7f408dc4d"},"schema_version":"1.0","source":{"id":"1612.05399","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.05399","created_at":"2026-05-18T00:54:51Z"},{"alias_kind":"arxiv_version","alias_value":"1612.05399v1","created_at":"2026-05-18T00:54:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.05399","created_at":"2026-05-18T00:54:51Z"},{"alias_kind":"pith_short_12","alias_value":"ECVXFCZII4BL","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"ECVXFCZII4BLDP7T","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"ECVXFCZI","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:908c732c649d1144acecc56d827e73ec1b34ab8c2d0e1f7eceeda41bff19528f","target":"graph","created_at":"2026-05-18T00:54:51Z","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":"In a joint theoretical and experimental work the optical properties of azobenzene-functionalized self-assembled monolayers (SAMs) are studied at different molecular packing densities. Our results, based on density-functional and many-body perturbation theory, as well as on differential reflectance (DR) spectroscopy, shed light on the microscopic mechanisms ruling photo-absorption in these systems. While the optical excitations are intrinsically excitonic in nature, regardless of the molecular concentration, in densely-packed SAMs intermolecular coupling and local-field effects are responsible ","authors_text":"Caterina Cocchi, Claudia Draxl, Cornelius Gahl, Martin Weinelt, Thomas Moldt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-12-16T09:20:37Z","title":"Optical properties of azobenzene-functionalized self-assembled monolayers: Intermolecular coupling and many-body interactions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.05399","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":"sha256:3dff3e7f89a46be4c72737d25e9486545c346c16f9cc4bf6ccf1056ab2163526","target":"record","created_at":"2026-05-18T00:54:51Z","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":"b34eac3d2449e987f850763bfa9f5595ddc6a89279005d1e1118aeeff9c15e23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-12-16T09:20:37Z","title_canon_sha256":"7df5947e2fd93623a545c0d0ba5b1ea93c43aa202ca593c96575b9c7f408dc4d"},"schema_version":"1.0","source":{"id":"1612.05399","kind":"arxiv","version":1}},"canonical_sha256":"20ab728b284702b1bff3959b136a32c84dfd93a25f9f5c8e3bd20d9e63608069","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20ab728b284702b1bff3959b136a32c84dfd93a25f9f5c8e3bd20d9e63608069","first_computed_at":"2026-05-18T00:54:51.872224Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:54:51.872224Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0iw1erWQSsdZGY/Ex8Str0FAZ8LRWjwDBaQjpTdnkqGEormeTNwDwwx2s3Udee2cYi5iAHJg55i1ssKc1SdqBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:54:51.872817Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.05399","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3dff3e7f89a46be4c72737d25e9486545c346c16f9cc4bf6ccf1056ab2163526","sha256:908c732c649d1144acecc56d827e73ec1b34ab8c2d0e1f7eceeda41bff19528f"],"state_sha256":"82c84d50cef65388d1402a910bcf641a6327265ef1ab2305430a47713c7c3011"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4RQdlW70+O++X61GkoJHpqI85KvqwmfqMhYBl89nnKLt71wuCt+UEgpWP8WW+MsmnqmoJDGwYbS3dbWD9TwmAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T12:41:59.550172Z","bundle_sha256":"f0af7ee7ab48985fd0c98902522b920503d36ae660438561d1d96f4a263009bf"}}