{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:BY3ZG6YZW22WMURSLORC2WBR73","short_pith_number":"pith:BY3ZG6YZ","canonical_record":{"source":{"id":"0904.3602","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2009-04-23T06:01:45Z","cross_cats_sorted":[],"title_canon_sha256":"07b587b5cb2c9d0dbfea51ce9378a04091b2ee94fc09784f76b82e9624091308","abstract_canon_sha256":"165bef2fb5de096b1aa2b79439cb7027d63ed4af6dde87cee1b1476c7af85243"},"schema_version":"1.0"},"canonical_sha256":"0e37937b19b6b56652325ba22d5831feecfb73e9eb796bb09035f6c75eedaf59","source":{"kind":"arxiv","id":"0904.3602","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.3602","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"arxiv_version","alias_value":"0904.3602v1","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.3602","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"pith_short_12","alias_value":"BY3ZG6YZW22W","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BY3ZG6YZW22WMURS","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BY3ZG6YZ","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:BY3ZG6YZW22WMURSLORC2WBR73","target":"record","payload":{"canonical_record":{"source":{"id":"0904.3602","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2009-04-23T06:01:45Z","cross_cats_sorted":[],"title_canon_sha256":"07b587b5cb2c9d0dbfea51ce9378a04091b2ee94fc09784f76b82e9624091308","abstract_canon_sha256":"165bef2fb5de096b1aa2b79439cb7027d63ed4af6dde87cee1b1476c7af85243"},"schema_version":"1.0"},"canonical_sha256":"0e37937b19b6b56652325ba22d5831feecfb73e9eb796bb09035f6c75eedaf59","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:40.660281Z","signature_b64":"UqWMNdNphdyWaUIGKethqbIkHNA2Xaj5QE8BpizWdxQ0aygGPYhZ/Y1CcHGL5wNKfemzXcTydHraJbiLGxLoCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0e37937b19b6b56652325ba22d5831feecfb73e9eb796bb09035f6c75eedaf59","last_reissued_at":"2026-05-18T02:25:40.659835Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:40.659835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0904.3602","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":"2026-05-18T02:25:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qEDZoa8G54Uk9+AQHDA2e2kU6h4OGFOq0jH42M68LaOg69fk6vbGeeLAUAPGUbFzkI8lqEjmjYNOPiz0moIvCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T16:35:15.208239Z"},"content_sha256":"0965502196d986a596ee1b30d7dde783dda1d3d20edf351b6fd43eb1fe8008c8","schema_version":"1.0","event_id":"sha256:0965502196d986a596ee1b30d7dde783dda1d3d20edf351b6fd43eb1fe8008c8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:BY3ZG6YZW22WMURSLORC2WBR73","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dielectric Optical Cloak","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Guy Bartal, Jason Valentine, Jensen Li, Thomas Zentgraf, Xiang Zhang","submitted_at":"2009-04-23T06:01:45Z","abstract_excerpt":"Invisibility or cloaking has captured human's imagination for many years. With the recent advancement of metamaterials, several theoretical proposals show cloaking of objects is possible, however, so far there is a lack of an experimental demonstration at optical frequencies. Here, we report the first experimental realization of a dielectric optical cloak. The cloak is designed using quasi-conformal mapping to conceal an object that is placed under a curved reflecting surface which imitates the reflection of a flat surface. Our cloak consists only of isotropic dielectric materials which enable"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.3602","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":"2026-05-18T02:25:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f5sL5OYphFe5B3GudTPZi+pT+z42q/322/jJlZkhSnsoY9MoLoycSYcmka7DycKHMMeOZ5ThTle4kovZVEO3Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T16:35:15.208953Z"},"content_sha256":"3571108be3084abad139d1821562a4a6c9b7babf206b2229bebdf811fe179589","schema_version":"1.0","event_id":"sha256:3571108be3084abad139d1821562a4a6c9b7babf206b2229bebdf811fe179589"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BY3ZG6YZW22WMURSLORC2WBR73/bundle.json","state_url":"https://pith.science/pith/BY3ZG6YZW22WMURSLORC2WBR73/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BY3ZG6YZW22WMURSLORC2WBR73/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":"2026-06-11T16:35:15Z","links":{"resolver":"https://pith.science/pith/BY3ZG6YZW22WMURSLORC2WBR73","bundle":"https://pith.science/pith/BY3ZG6YZW22WMURSLORC2WBR73/bundle.json","state":"https://pith.science/pith/BY3ZG6YZW22WMURSLORC2WBR73/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BY3ZG6YZW22WMURSLORC2WBR73/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:BY3ZG6YZW22WMURSLORC2WBR73","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":"165bef2fb5de096b1aa2b79439cb7027d63ed4af6dde87cee1b1476c7af85243","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2009-04-23T06:01:45Z","title_canon_sha256":"07b587b5cb2c9d0dbfea51ce9378a04091b2ee94fc09784f76b82e9624091308"},"schema_version":"1.0","source":{"id":"0904.3602","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.3602","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"arxiv_version","alias_value":"0904.3602v1","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.3602","created_at":"2026-05-18T02:25:40Z"},{"alias_kind":"pith_short_12","alias_value":"BY3ZG6YZW22W","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BY3ZG6YZW22WMURS","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BY3ZG6YZ","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:3571108be3084abad139d1821562a4a6c9b7babf206b2229bebdf811fe179589","target":"graph","created_at":"2026-05-18T02:25:40Z","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":"Invisibility or cloaking has captured human's imagination for many years. With the recent advancement of metamaterials, several theoretical proposals show cloaking of objects is possible, however, so far there is a lack of an experimental demonstration at optical frequencies. Here, we report the first experimental realization of a dielectric optical cloak. The cloak is designed using quasi-conformal mapping to conceal an object that is placed under a curved reflecting surface which imitates the reflection of a flat surface. Our cloak consists only of isotropic dielectric materials which enable","authors_text":"Guy Bartal, Jason Valentine, Jensen Li, Thomas Zentgraf, Xiang Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2009-04-23T06:01:45Z","title":"Dielectric Optical Cloak"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.3602","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":"sha256:0965502196d986a596ee1b30d7dde783dda1d3d20edf351b6fd43eb1fe8008c8","target":"record","created_at":"2026-05-18T02:25:40Z","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":"165bef2fb5de096b1aa2b79439cb7027d63ed4af6dde87cee1b1476c7af85243","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2009-04-23T06:01:45Z","title_canon_sha256":"07b587b5cb2c9d0dbfea51ce9378a04091b2ee94fc09784f76b82e9624091308"},"schema_version":"1.0","source":{"id":"0904.3602","kind":"arxiv","version":1}},"canonical_sha256":"0e37937b19b6b56652325ba22d5831feecfb73e9eb796bb09035f6c75eedaf59","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0e37937b19b6b56652325ba22d5831feecfb73e9eb796bb09035f6c75eedaf59","first_computed_at":"2026-05-18T02:25:40.659835Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:40.659835Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UqWMNdNphdyWaUIGKethqbIkHNA2Xaj5QE8BpizWdxQ0aygGPYhZ/Y1CcHGL5wNKfemzXcTydHraJbiLGxLoCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:40.660281Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.3602","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0965502196d986a596ee1b30d7dde783dda1d3d20edf351b6fd43eb1fe8008c8","sha256:3571108be3084abad139d1821562a4a6c9b7babf206b2229bebdf811fe179589"],"state_sha256":"5fe681d0c72137a0e50e0b9c0524ba79f0e280c70fb06fcb85122a4189d7db26"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JBx+t9ClxHXkIV8tUmCwCriEhwyY40CHwrhtltG5pAIoS3+a7s6vLFGasY83NwAsgA3BG+QhvYyRCspLw8R0Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T16:35:15.212630Z","bundle_sha256":"02397bc9b4d0bf0d4e254639dc66db8ab23140167aab3c825276bbd1cacbc320"}}