{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:ZAQ4H4JQLFOXA2GGHVSCYZIZCN","short_pith_number":"pith:ZAQ4H4JQ","canonical_record":{"source":{"id":"2411.08157","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-11-12T20:06:46Z","cross_cats_sorted":[],"title_canon_sha256":"2a6462cecbf1c0f4f7cac6887dc6016d463aa1b9a99792caa5cea07e84b9b98e","abstract_canon_sha256":"b524c11dae82e38ca903a2d7e7a753a53c5bcc0cf2cc4b511b557e6e546bea0e"},"schema_version":"1.0"},"canonical_sha256":"c821c3f130595d7068c63d642c6519137e85b128d617ffa683f4c7779dcfaaaf","source":{"kind":"arxiv","id":"2411.08157","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.08157","created_at":"2026-07-05T09:34:42Z"},{"alias_kind":"arxiv_version","alias_value":"2411.08157v1","created_at":"2026-07-05T09:34:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.08157","created_at":"2026-07-05T09:34:42Z"},{"alias_kind":"pith_short_12","alias_value":"ZAQ4H4JQLFOX","created_at":"2026-07-05T09:34:42Z"},{"alias_kind":"pith_short_16","alias_value":"ZAQ4H4JQLFOXA2GG","created_at":"2026-07-05T09:34:42Z"},{"alias_kind":"pith_short_8","alias_value":"ZAQ4H4JQ","created_at":"2026-07-05T09:34:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:ZAQ4H4JQLFOXA2GGHVSCYZIZCN","target":"record","payload":{"canonical_record":{"source":{"id":"2411.08157","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-11-12T20:06:46Z","cross_cats_sorted":[],"title_canon_sha256":"2a6462cecbf1c0f4f7cac6887dc6016d463aa1b9a99792caa5cea07e84b9b98e","abstract_canon_sha256":"b524c11dae82e38ca903a2d7e7a753a53c5bcc0cf2cc4b511b557e6e546bea0e"},"schema_version":"1.0"},"canonical_sha256":"c821c3f130595d7068c63d642c6519137e85b128d617ffa683f4c7779dcfaaaf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:34:42.235967Z","signature_b64":"GwX0CA4aiisaVaL/1jtpzCBlaBIbtN2mnXDG4lURxCfljQxZybZbnDo0Dm/cpdofzXwGpZSn5t6SkWJOxPSIDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c821c3f130595d7068c63d642c6519137e85b128d617ffa683f4c7779dcfaaaf","last_reissued_at":"2026-07-05T09:34:42.235489Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:34:42.235489Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2411.08157","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":"2026-07-05T09:34:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d0WVOZvIWC4GuuZiIe1pHXLHcFOnxW3u3MjEyRUBzbCyqPAEloAlMpzqDw1QGZ/nDz8gB2hhcmiTaSi4iEruBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:34:16.993441Z"},"content_sha256":"1f72ef5a9d871c8abf99cc2cbea8366ce4d73528217bce33d1cd9dca4b8f5345","schema_version":"1.0","event_id":"sha256:1f72ef5a9d871c8abf99cc2cbea8366ce4d73528217bce33d1cd9dca4b8f5345"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:ZAQ4H4JQLFOXA2GGHVSCYZIZCN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spatiotemporal Superfocusing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"F. J. Garc\\'ia-Vidal, Guangwei Hu, Hao Hu, Haotian Wu, Qianru Yang, Yu Luo","submitted_at":"2024-11-12T20:06:46Z","abstract_excerpt":"Superfocusing confines light within subwavelength structures, breaking the diffraction limit. Structures with spatial singularities, such as metallic cones, are crucial to enable nanoscale focusing, leading to significant advancements in nanophotonics, sensing, and imaging. Here, we exploit the spatiotemporal analogue of the wedge structure, i.e. a dielectric medium sandwiched between two subluminal interfaces with distinct velocities, to focus propagating waves beyond the diffraction limit, achieving spatiotemporal superfocusing. Within this structure, an incident pulse undergoes continuous s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.08157","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/2411.08157/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":"2026-07-05T09:34:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dVvvegEv/BrwqoOHQQ88SvNzOEIw3qzZYJnIeWWMHrbe93no1Quvfe+eyC07PQ1LbiZUDBxPKyiiF+/UVszXBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:34:16.994421Z"},"content_sha256":"2a03e193f73f0c7f4e5ea98dc771d4c9f400db31f4434eac6f443c1ce71476dd","schema_version":"1.0","event_id":"sha256:2a03e193f73f0c7f4e5ea98dc771d4c9f400db31f4434eac6f443c1ce71476dd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZAQ4H4JQLFOXA2GGHVSCYZIZCN/bundle.json","state_url":"https://pith.science/pith/ZAQ4H4JQLFOXA2GGHVSCYZIZCN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZAQ4H4JQLFOXA2GGHVSCYZIZCN/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":"2026-08-05T18:34:16Z","links":{"resolver":"https://pith.science/pith/ZAQ4H4JQLFOXA2GGHVSCYZIZCN","bundle":"https://pith.science/pith/ZAQ4H4JQLFOXA2GGHVSCYZIZCN/bundle.json","state":"https://pith.science/pith/ZAQ4H4JQLFOXA2GGHVSCYZIZCN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZAQ4H4JQLFOXA2GGHVSCYZIZCN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:ZAQ4H4JQLFOXA2GGHVSCYZIZCN","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":"b524c11dae82e38ca903a2d7e7a753a53c5bcc0cf2cc4b511b557e6e546bea0e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-11-12T20:06:46Z","title_canon_sha256":"2a6462cecbf1c0f4f7cac6887dc6016d463aa1b9a99792caa5cea07e84b9b98e"},"schema_version":"1.0","source":{"id":"2411.08157","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2411.08157","created_at":"2026-07-05T09:34:42Z"},{"alias_kind":"arxiv_version","alias_value":"2411.08157v1","created_at":"2026-07-05T09:34:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2411.08157","created_at":"2026-07-05T09:34:42Z"},{"alias_kind":"pith_short_12","alias_value":"ZAQ4H4JQLFOX","created_at":"2026-07-05T09:34:42Z"},{"alias_kind":"pith_short_16","alias_value":"ZAQ4H4JQLFOXA2GG","created_at":"2026-07-05T09:34:42Z"},{"alias_kind":"pith_short_8","alias_value":"ZAQ4H4JQ","created_at":"2026-07-05T09:34:42Z"}],"graph_snapshots":[{"event_id":"sha256:2a03e193f73f0c7f4e5ea98dc771d4c9f400db31f4434eac6f443c1ce71476dd","target":"graph","created_at":"2026-07-05T09:34:42Z","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/2411.08157/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Superfocusing confines light within subwavelength structures, breaking the diffraction limit. Structures with spatial singularities, such as metallic cones, are crucial to enable nanoscale focusing, leading to significant advancements in nanophotonics, sensing, and imaging. Here, we exploit the spatiotemporal analogue of the wedge structure, i.e. a dielectric medium sandwiched between two subluminal interfaces with distinct velocities, to focus propagating waves beyond the diffraction limit, achieving spatiotemporal superfocusing. Within this structure, an incident pulse undergoes continuous s","authors_text":"F. J. Garc\\'ia-Vidal, Guangwei Hu, Hao Hu, Haotian Wu, Qianru Yang, Yu Luo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-11-12T20:06:46Z","title":"Spatiotemporal Superfocusing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.08157","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":"sha256:1f72ef5a9d871c8abf99cc2cbea8366ce4d73528217bce33d1cd9dca4b8f5345","target":"record","created_at":"2026-07-05T09:34:42Z","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":"b524c11dae82e38ca903a2d7e7a753a53c5bcc0cf2cc4b511b557e6e546bea0e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-11-12T20:06:46Z","title_canon_sha256":"2a6462cecbf1c0f4f7cac6887dc6016d463aa1b9a99792caa5cea07e84b9b98e"},"schema_version":"1.0","source":{"id":"2411.08157","kind":"arxiv","version":1}},"canonical_sha256":"c821c3f130595d7068c63d642c6519137e85b128d617ffa683f4c7779dcfaaaf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c821c3f130595d7068c63d642c6519137e85b128d617ffa683f4c7779dcfaaaf","first_computed_at":"2026-07-05T09:34:42.235489Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:34:42.235489Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GwX0CA4aiisaVaL/1jtpzCBlaBIbtN2mnXDG4lURxCfljQxZybZbnDo0Dm/cpdofzXwGpZSn5t6SkWJOxPSIDw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:34:42.235967Z","signed_message":"canonical_sha256_bytes"},"source_id":"2411.08157","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1f72ef5a9d871c8abf99cc2cbea8366ce4d73528217bce33d1cd9dca4b8f5345","sha256:2a03e193f73f0c7f4e5ea98dc771d4c9f400db31f4434eac6f443c1ce71476dd"],"state_sha256":"43540f8a352215b5c6980c29c4d9a9dd2bf1e3ff059de270e13784d327c5d3d6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EYtCAyYSsTcneHsqBhmdr6iDWBwzwiGuSjgV5ty39fr4cVPIDSWEuLoqg1cmCe4lb658A8ku1zt31I+IpHo9CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T18:34:17.002422Z","bundle_sha256":"e3014d78603be4930b25279e6b027e6ec9290b7779641b4418e529fae15fd1de"}}