{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:KKAEMTKXOEZQ743LNQBNECPU3F","short_pith_number":"pith:KKAEMTKX","canonical_record":{"source":{"id":"2405.10901","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-05-17T16:40:07Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"a499174fbdb686211f54c70b7f6489539fd9a4be43414536472c8e65d24b86dd","abstract_canon_sha256":"d40586bd5363b873b3bf41901bb36d6ea29e0793d6d2892c18a20df42c902e59"},"schema_version":"1.0"},"canonical_sha256":"5280464d5771330ff36b6c02d209f4d948cdc06c63e946f90d7c31e9050438ee","source":{"kind":"arxiv","id":"2405.10901","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.10901","created_at":"2026-07-05T08:20:19Z"},{"alias_kind":"arxiv_version","alias_value":"2405.10901v1","created_at":"2026-07-05T08:20:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.10901","created_at":"2026-07-05T08:20:19Z"},{"alias_kind":"pith_short_12","alias_value":"KKAEMTKXOEZQ","created_at":"2026-07-05T08:20:19Z"},{"alias_kind":"pith_short_16","alias_value":"KKAEMTKXOEZQ743L","created_at":"2026-07-05T08:20:19Z"},{"alias_kind":"pith_short_8","alias_value":"KKAEMTKX","created_at":"2026-07-05T08:20:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:KKAEMTKXOEZQ743LNQBNECPU3F","target":"record","payload":{"canonical_record":{"source":{"id":"2405.10901","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-05-17T16:40:07Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"a499174fbdb686211f54c70b7f6489539fd9a4be43414536472c8e65d24b86dd","abstract_canon_sha256":"d40586bd5363b873b3bf41901bb36d6ea29e0793d6d2892c18a20df42c902e59"},"schema_version":"1.0"},"canonical_sha256":"5280464d5771330ff36b6c02d209f4d948cdc06c63e946f90d7c31e9050438ee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:20:19.175425Z","signature_b64":"1nIaHWyTKwhSgUEhRZvkNM94Anm83/N74hu6ufA40Grmu/ayIFKJLjYQNOiStWkK4qyocKXa3ryBVnW7RnobCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5280464d5771330ff36b6c02d209f4d948cdc06c63e946f90d7c31e9050438ee","last_reissued_at":"2026-07-05T08:20:19.174964Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:20:19.174964Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2405.10901","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":"2026-07-05T08:20:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nQJ7loiuUwrBwiSBa6W9z6fqhFGXL8+YIElhxD9XoPq7fr71lyVnlSaFexp/HWzE678QOCAFYKULrwO4maedCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T16:34:03.517184Z"},"content_sha256":"040689f04d6e1773f850a3cee8bd66a1dca693bcf850e748f0dfeb3bb93f542c","schema_version":"1.0","event_id":"sha256:040689f04d6e1773f850a3cee8bd66a1dca693bcf850e748f0dfeb3bb93f542c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:KKAEMTKXOEZQ743LNQBNECPU3F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Inverse Design for Waveguide Dispersion with a Differentiable Mode Solver","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.optics","authors_text":"Dodd Gray, Gavin N. West, Rajeev J. Ram","submitted_at":"2024-05-17T16:40:07Z","abstract_excerpt":"Inverse design of optical components based on adjoint sensitivity analysis has the potential to address the most challenging photonic engineering problems. However existing inverse design tools based on finite-difference-time-domain (FDTD) models are poorly suited for optimizing waveguide modes for adiabatic transformation or perturbative coupling, which lies at the heart of many important photonic devices. Among these, dispersion engineering of optical waveguides is especially challenging in ultrafast and nonlinear optical applications involving broad optical bandwidths and frequency-dependen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.10901","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2405.10901/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T08:20:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WEbJnBjizwLBrLf8sq0vnYL4e5u2Af1jBWqTKyakhjSefxBW1n/FLotkpP9l9hSoOlin+KxLHN2l79W8mG4HDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T16:34:03.517540Z"},"content_sha256":"9382320a9f6c4d9bc077a7760ea06a020fba93d575fef69bbaf89bf9bca035eb","schema_version":"1.0","event_id":"sha256:9382320a9f6c4d9bc077a7760ea06a020fba93d575fef69bbaf89bf9bca035eb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KKAEMTKXOEZQ743LNQBNECPU3F/bundle.json","state_url":"https://pith.science/pith/KKAEMTKXOEZQ743LNQBNECPU3F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KKAEMTKXOEZQ743LNQBNECPU3F/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":"2026-08-17T16:34:03Z","links":{"resolver":"https://pith.science/pith/KKAEMTKXOEZQ743LNQBNECPU3F","bundle":"https://pith.science/pith/KKAEMTKXOEZQ743LNQBNECPU3F/bundle.json","state":"https://pith.science/pith/KKAEMTKXOEZQ743LNQBNECPU3F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KKAEMTKXOEZQ743LNQBNECPU3F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:KKAEMTKXOEZQ743LNQBNECPU3F","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":"d40586bd5363b873b3bf41901bb36d6ea29e0793d6d2892c18a20df42c902e59","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-05-17T16:40:07Z","title_canon_sha256":"a499174fbdb686211f54c70b7f6489539fd9a4be43414536472c8e65d24b86dd"},"schema_version":"1.0","source":{"id":"2405.10901","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.10901","created_at":"2026-07-05T08:20:19Z"},{"alias_kind":"arxiv_version","alias_value":"2405.10901v1","created_at":"2026-07-05T08:20:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.10901","created_at":"2026-07-05T08:20:19Z"},{"alias_kind":"pith_short_12","alias_value":"KKAEMTKXOEZQ","created_at":"2026-07-05T08:20:19Z"},{"alias_kind":"pith_short_16","alias_value":"KKAEMTKXOEZQ743L","created_at":"2026-07-05T08:20:19Z"},{"alias_kind":"pith_short_8","alias_value":"KKAEMTKX","created_at":"2026-07-05T08:20:19Z"}],"graph_snapshots":[{"event_id":"sha256:9382320a9f6c4d9bc077a7760ea06a020fba93d575fef69bbaf89bf9bca035eb","target":"graph","created_at":"2026-07-05T08:20:19Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2405.10901/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Inverse design of optical components based on adjoint sensitivity analysis has the potential to address the most challenging photonic engineering problems. However existing inverse design tools based on finite-difference-time-domain (FDTD) models are poorly suited for optimizing waveguide modes for adiabatic transformation or perturbative coupling, which lies at the heart of many important photonic devices. Among these, dispersion engineering of optical waveguides is especially challenging in ultrafast and nonlinear optical applications involving broad optical bandwidths and frequency-dependen","authors_text":"Dodd Gray, Gavin N. West, Rajeev J. Ram","cross_cats":["physics.comp-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-05-17T16:40:07Z","title":"Inverse Design for Waveguide Dispersion with a Differentiable Mode Solver"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.10901","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":"sha256:040689f04d6e1773f850a3cee8bd66a1dca693bcf850e748f0dfeb3bb93f542c","target":"record","created_at":"2026-07-05T08:20:19Z","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":"d40586bd5363b873b3bf41901bb36d6ea29e0793d6d2892c18a20df42c902e59","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-05-17T16:40:07Z","title_canon_sha256":"a499174fbdb686211f54c70b7f6489539fd9a4be43414536472c8e65d24b86dd"},"schema_version":"1.0","source":{"id":"2405.10901","kind":"arxiv","version":1}},"canonical_sha256":"5280464d5771330ff36b6c02d209f4d948cdc06c63e946f90d7c31e9050438ee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5280464d5771330ff36b6c02d209f4d948cdc06c63e946f90d7c31e9050438ee","first_computed_at":"2026-07-05T08:20:19.174964Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:20:19.174964Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1nIaHWyTKwhSgUEhRZvkNM94Anm83/N74hu6ufA40Grmu/ayIFKJLjYQNOiStWkK4qyocKXa3ryBVnW7RnobCw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:20:19.175425Z","signed_message":"canonical_sha256_bytes"},"source_id":"2405.10901","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:040689f04d6e1773f850a3cee8bd66a1dca693bcf850e748f0dfeb3bb93f542c","sha256:9382320a9f6c4d9bc077a7760ea06a020fba93d575fef69bbaf89bf9bca035eb"],"state_sha256":"3f3db6ba0d35b6c6ecc5d6aa9742fe7dde912158e82dd57f761ed6831e8881c0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UeLrve333AVP/hzsFGtCNNYXrmDS64b71XEZn0RqTdARZ7n7lXx6QtbkeNlHkxczAB1mav+D54HG6MHn8+jqDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T16:34:03.520229Z","bundle_sha256":"0cf4f29a5576afdaad74c44fc613dd7a4a49502ba2936aea8bc26d2b4371ccf8"}}