{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:U67MD4IY5OAXE6YJWGJNVQGYOL","short_pith_number":"pith:U67MD4IY","canonical_record":{"source":{"id":"1905.06029","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-05-15T08:36:06Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"9bf1d4a23725246af6da114d7d6cea98d45ae67507e69c505d1585eea57773ba","abstract_canon_sha256":"093d8ea5d3c410fa7c97b4ca780baa792e3f4e06e684818bc20ba46abc05fd34"},"schema_version":"1.0"},"canonical_sha256":"a7bec1f118eb81727b09b192dac0d872cdd148b25b15a5fd0a7e1e5cd6d4e13e","source":{"kind":"arxiv","id":"1905.06029","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.06029","created_at":"2026-05-17T23:46:07Z"},{"alias_kind":"arxiv_version","alias_value":"1905.06029v1","created_at":"2026-05-17T23:46:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.06029","created_at":"2026-05-17T23:46:07Z"},{"alias_kind":"pith_short_12","alias_value":"U67MD4IY5OAX","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"U67MD4IY5OAXE6YJ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"U67MD4IY","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:U67MD4IY5OAXE6YJWGJNVQGYOL","target":"record","payload":{"canonical_record":{"source":{"id":"1905.06029","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-05-15T08:36:06Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"9bf1d4a23725246af6da114d7d6cea98d45ae67507e69c505d1585eea57773ba","abstract_canon_sha256":"093d8ea5d3c410fa7c97b4ca780baa792e3f4e06e684818bc20ba46abc05fd34"},"schema_version":"1.0"},"canonical_sha256":"a7bec1f118eb81727b09b192dac0d872cdd148b25b15a5fd0a7e1e5cd6d4e13e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:46:07.688923Z","signature_b64":"fPLCa1NgzBOk90b11jlG1Xb3llK3YOYkmzbYzbCXKyGHFjTcE60/UTaLIXY11I9eDLoytbzsEw2GajWvJzdLAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7bec1f118eb81727b09b192dac0d872cdd148b25b15a5fd0a7e1e5cd6d4e13e","last_reissued_at":"2026-05-17T23:46:07.688286Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:46:07.688286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.06029","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":"2026-05-17T23:46:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XycuAs4zfw2cJP6vm9TQUdfMMR0kOdxL45TnDwHWM6W7oCPMi7UkHe1TEyjddXiE5JDlzwVUnG66HGof2jiiBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T13:06:15.346270Z"},"content_sha256":"7cceeaf884cbac95f2d7dacc4cd36b67ebd701a8b439148ef867b354d5d50b9e","schema_version":"1.0","event_id":"sha256:7cceeaf884cbac95f2d7dacc4cd36b67ebd701a8b439148ef867b354d5d50b9e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:U67MD4IY5OAXE6YJWGJNVQGYOL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-Uniqueness of Parameters Extracted from Resonant Second-Order Nonlinear Optical Spectroscopies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.chem-ph","authors_text":"Abderrahmane Tadjeddine (LCPO, Bertrand Busson (LCPO, Inc)","submitted_at":"2019-05-15T08:36:06Z","abstract_excerpt":"Experimental data from second-order nonlinear optical spectroscopies (SFG, DFG, and SHG) provide parameters relevant to the physical chemistry of interfaces and thin films. We show that there are in general 2 N or 2 N-1 equivalent sets of parameters to fit an experimental curve comprising N resonant features, of vibrational or electronic origin for example. We provide the algorithm to calculate these sets, among which the most appropriate has to be selected. The main consequences deal with the existence of \"ghost resonances\", the need of a critical analysis of fit results, and the procedure to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.06029","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":"2026-05-17T23:46:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f0QYgujphaGSobPF2w6q6Vb38+xYebfUs11WNw2Mo/Liv3M4hxgb2f4uaTjJI327t4Lsvyt9bqVSz5C7uIhyAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T13:06:15.346629Z"},"content_sha256":"c6dc2666e01085e78a039d1bdd5fba5332ea212993e3c6daaea27c2e101edc67","schema_version":"1.0","event_id":"sha256:c6dc2666e01085e78a039d1bdd5fba5332ea212993e3c6daaea27c2e101edc67"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U67MD4IY5OAXE6YJWGJNVQGYOL/bundle.json","state_url":"https://pith.science/pith/U67MD4IY5OAXE6YJWGJNVQGYOL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U67MD4IY5OAXE6YJWGJNVQGYOL/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":"2026-06-08T13:06:15Z","links":{"resolver":"https://pith.science/pith/U67MD4IY5OAXE6YJWGJNVQGYOL","bundle":"https://pith.science/pith/U67MD4IY5OAXE6YJWGJNVQGYOL/bundle.json","state":"https://pith.science/pith/U67MD4IY5OAXE6YJWGJNVQGYOL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U67MD4IY5OAXE6YJWGJNVQGYOL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:U67MD4IY5OAXE6YJWGJNVQGYOL","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":"093d8ea5d3c410fa7c97b4ca780baa792e3f4e06e684818bc20ba46abc05fd34","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-05-15T08:36:06Z","title_canon_sha256":"9bf1d4a23725246af6da114d7d6cea98d45ae67507e69c505d1585eea57773ba"},"schema_version":"1.0","source":{"id":"1905.06029","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.06029","created_at":"2026-05-17T23:46:07Z"},{"alias_kind":"arxiv_version","alias_value":"1905.06029v1","created_at":"2026-05-17T23:46:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.06029","created_at":"2026-05-17T23:46:07Z"},{"alias_kind":"pith_short_12","alias_value":"U67MD4IY5OAX","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"U67MD4IY5OAXE6YJ","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"U67MD4IY","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:c6dc2666e01085e78a039d1bdd5fba5332ea212993e3c6daaea27c2e101edc67","target":"graph","created_at":"2026-05-17T23:46:07Z","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":"Experimental data from second-order nonlinear optical spectroscopies (SFG, DFG, and SHG) provide parameters relevant to the physical chemistry of interfaces and thin films. We show that there are in general 2 N or 2 N-1 equivalent sets of parameters to fit an experimental curve comprising N resonant features, of vibrational or electronic origin for example. We provide the algorithm to calculate these sets, among which the most appropriate has to be selected. The main consequences deal with the existence of \"ghost resonances\", the need of a critical analysis of fit results, and the procedure to","authors_text":"Abderrahmane Tadjeddine (LCPO, Bertrand Busson (LCPO, Inc)","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-05-15T08:36:06Z","title":"Non-Uniqueness of Parameters Extracted from Resonant Second-Order Nonlinear Optical Spectroscopies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.06029","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":"sha256:7cceeaf884cbac95f2d7dacc4cd36b67ebd701a8b439148ef867b354d5d50b9e","target":"record","created_at":"2026-05-17T23:46:07Z","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":"093d8ea5d3c410fa7c97b4ca780baa792e3f4e06e684818bc20ba46abc05fd34","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2019-05-15T08:36:06Z","title_canon_sha256":"9bf1d4a23725246af6da114d7d6cea98d45ae67507e69c505d1585eea57773ba"},"schema_version":"1.0","source":{"id":"1905.06029","kind":"arxiv","version":1}},"canonical_sha256":"a7bec1f118eb81727b09b192dac0d872cdd148b25b15a5fd0a7e1e5cd6d4e13e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7bec1f118eb81727b09b192dac0d872cdd148b25b15a5fd0a7e1e5cd6d4e13e","first_computed_at":"2026-05-17T23:46:07.688286Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:07.688286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fPLCa1NgzBOk90b11jlG1Xb3llK3YOYkmzbYzbCXKyGHFjTcE60/UTaLIXY11I9eDLoytbzsEw2GajWvJzdLAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:07.688923Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.06029","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7cceeaf884cbac95f2d7dacc4cd36b67ebd701a8b439148ef867b354d5d50b9e","sha256:c6dc2666e01085e78a039d1bdd5fba5332ea212993e3c6daaea27c2e101edc67"],"state_sha256":"41682e95673d6205f395995402510a10a0d5c457d0e1e7ade975c073d0e72219"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"atTpKguALX/m9PqTV5s1saDK5SXukkXr5v47mtFkdkvZkNn07ybtBmi2nHM4j2GJWFw4t7LxCYw5nlmR921kDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T13:06:15.348624Z","bundle_sha256":"7f1717d24cfa868d2b86ecd48847c0f62fe8d11d0faaf5441952dea889541173"}}