{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:MYF5MS7MSZ2AW4Y4X4OWSVJDQF","short_pith_number":"pith:MYF5MS7M","canonical_record":{"source":{"id":"2606.29019","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-06-27T17:38:20Z","cross_cats_sorted":[],"title_canon_sha256":"435cb65bb9b7f95045a8239361f4216453c1239ed40c1df3f689738a308f10c8","abstract_canon_sha256":"ec1c196367b1630986a97e0540500e58f37edb20e6c18241748590eee2054b19"},"schema_version":"1.0"},"canonical_sha256":"660bd64bec96740b731cbf1d69552381494f6cd6185cd8e1f307d4837b19a0f4","source":{"kind":"arxiv","id":"2606.29019","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.29019","created_at":"2026-06-30T01:17:49Z"},{"alias_kind":"arxiv_version","alias_value":"2606.29019v1","created_at":"2026-06-30T01:17:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.29019","created_at":"2026-06-30T01:17:49Z"},{"alias_kind":"pith_short_12","alias_value":"MYF5MS7MSZ2A","created_at":"2026-06-30T01:17:49Z"},{"alias_kind":"pith_short_16","alias_value":"MYF5MS7MSZ2AW4Y4","created_at":"2026-06-30T01:17:49Z"},{"alias_kind":"pith_short_8","alias_value":"MYF5MS7M","created_at":"2026-06-30T01:17:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:MYF5MS7MSZ2AW4Y4X4OWSVJDQF","target":"record","payload":{"canonical_record":{"source":{"id":"2606.29019","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-06-27T17:38:20Z","cross_cats_sorted":[],"title_canon_sha256":"435cb65bb9b7f95045a8239361f4216453c1239ed40c1df3f689738a308f10c8","abstract_canon_sha256":"ec1c196367b1630986a97e0540500e58f37edb20e6c18241748590eee2054b19"},"schema_version":"1.0"},"canonical_sha256":"660bd64bec96740b731cbf1d69552381494f6cd6185cd8e1f307d4837b19a0f4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-30T01:17:49.628812Z","signature_b64":"hEOstvZHYVFl5exlLRiYy2RTxFNmK0NXpSHDnc/AejhD+ZqkVZbwc0kt+S+e3vM9fF6WR6tnzLR727LqGDcYBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"660bd64bec96740b731cbf1d69552381494f6cd6185cd8e1f307d4837b19a0f4","last_reissued_at":"2026-06-30T01:17:49.628246Z","signature_status":"signed_v1","first_computed_at":"2026-06-30T01:17:49.628246Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.29019","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":"2026-06-30T01:17:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xTJfN3WkHicH1tm+9mOIUX3tEONIoIny9emS4h6u4yHQsDzpeP8gr+OuQ0xHsVvk9eymMdlibP8CtAql4fTiDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:24:08.270393Z"},"content_sha256":"bbcd1265332b552e629a4e0cb4c9dd16b7a06b74d68358c7032d240d3c6c89d0","schema_version":"1.0","event_id":"sha256:bbcd1265332b552e629a4e0cb4c9dd16b7a06b74d68358c7032d240d3c6c89d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:MYF5MS7MSZ2AW4Y4X4OWSVJDQF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optically dense nanowire metamaterials are transparent to polarization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Ad Lagendijk, Shravan Raghunathan, Willem L.Vos","submitted_at":"2026-06-27T17:38:20Z","abstract_excerpt":"We study the transport of light through dense opaque anisotropic metamaterials consisting of oriented nanowires. The nanowires consist of polymer photoresist that is structured by direct laser writing (DLW) with two-photon induced polymerization, with radii between $a = 0.5$ and $1~\\mu \\text{m}$. Our flat samples have a thickness up to 9 layers, from $L = 3~\\mu \\text{m}$ to $20~\\mu \\text{m}$. Within each layer, the nanowires are parallel and spaced with random nearest-neighbor distances; nanowires in adjacent layers are perpendicular. The diffuse optical transmission at $\\lambda = 633~$nm is a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.29019","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/2606.29019/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":"2026-06-30T01:17:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cCmAaxm+ZNWLdW3dlf0tKcltMRD0PDUwViGMkCRj6bdJ0ki/Imjd/eeXQfR8ZQdnauPgOpLKA0fyzNfhrUwjDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:24:08.270762Z"},"content_sha256":"4b314bc44fb7866fdb61151fc9899e96a95b7f74bec05ed06a9b7af703c1b52b","schema_version":"1.0","event_id":"sha256:4b314bc44fb7866fdb61151fc9899e96a95b7f74bec05ed06a9b7af703c1b52b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MYF5MS7MSZ2AW4Y4X4OWSVJDQF/bundle.json","state_url":"https://pith.science/pith/MYF5MS7MSZ2AW4Y4X4OWSVJDQF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MYF5MS7MSZ2AW4Y4X4OWSVJDQF/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":"2026-07-07T08:24:08Z","links":{"resolver":"https://pith.science/pith/MYF5MS7MSZ2AW4Y4X4OWSVJDQF","bundle":"https://pith.science/pith/MYF5MS7MSZ2AW4Y4X4OWSVJDQF/bundle.json","state":"https://pith.science/pith/MYF5MS7MSZ2AW4Y4X4OWSVJDQF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MYF5MS7MSZ2AW4Y4X4OWSVJDQF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:MYF5MS7MSZ2AW4Y4X4OWSVJDQF","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":"ec1c196367b1630986a97e0540500e58f37edb20e6c18241748590eee2054b19","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-06-27T17:38:20Z","title_canon_sha256":"435cb65bb9b7f95045a8239361f4216453c1239ed40c1df3f689738a308f10c8"},"schema_version":"1.0","source":{"id":"2606.29019","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.29019","created_at":"2026-06-30T01:17:49Z"},{"alias_kind":"arxiv_version","alias_value":"2606.29019v1","created_at":"2026-06-30T01:17:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.29019","created_at":"2026-06-30T01:17:49Z"},{"alias_kind":"pith_short_12","alias_value":"MYF5MS7MSZ2A","created_at":"2026-06-30T01:17:49Z"},{"alias_kind":"pith_short_16","alias_value":"MYF5MS7MSZ2AW4Y4","created_at":"2026-06-30T01:17:49Z"},{"alias_kind":"pith_short_8","alias_value":"MYF5MS7M","created_at":"2026-06-30T01:17:49Z"}],"graph_snapshots":[{"event_id":"sha256:4b314bc44fb7866fdb61151fc9899e96a95b7f74bec05ed06a9b7af703c1b52b","target":"graph","created_at":"2026-06-30T01:17:49Z","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/2606.29019/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the transport of light through dense opaque anisotropic metamaterials consisting of oriented nanowires. The nanowires consist of polymer photoresist that is structured by direct laser writing (DLW) with two-photon induced polymerization, with radii between $a = 0.5$ and $1~\\mu \\text{m}$. Our flat samples have a thickness up to 9 layers, from $L = 3~\\mu \\text{m}$ to $20~\\mu \\text{m}$. Within each layer, the nanowires are parallel and spaced with random nearest-neighbor distances; nanowires in adjacent layers are perpendicular. The diffuse optical transmission at $\\lambda = 633~$nm is a","authors_text":"Ad Lagendijk, Shravan Raghunathan, Willem L.Vos","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-06-27T17:38:20Z","title":"Optically dense nanowire metamaterials are transparent to polarization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.29019","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:bbcd1265332b552e629a4e0cb4c9dd16b7a06b74d68358c7032d240d3c6c89d0","target":"record","created_at":"2026-06-30T01:17:49Z","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":"ec1c196367b1630986a97e0540500e58f37edb20e6c18241748590eee2054b19","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2026-06-27T17:38:20Z","title_canon_sha256":"435cb65bb9b7f95045a8239361f4216453c1239ed40c1df3f689738a308f10c8"},"schema_version":"1.0","source":{"id":"2606.29019","kind":"arxiv","version":1}},"canonical_sha256":"660bd64bec96740b731cbf1d69552381494f6cd6185cd8e1f307d4837b19a0f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"660bd64bec96740b731cbf1d69552381494f6cd6185cd8e1f307d4837b19a0f4","first_computed_at":"2026-06-30T01:17:49.628246Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-30T01:17:49.628246Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hEOstvZHYVFl5exlLRiYy2RTxFNmK0NXpSHDnc/AejhD+ZqkVZbwc0kt+S+e3vM9fF6WR6tnzLR727LqGDcYBQ==","signature_status":"signed_v1","signed_at":"2026-06-30T01:17:49.628812Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.29019","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bbcd1265332b552e629a4e0cb4c9dd16b7a06b74d68358c7032d240d3c6c89d0","sha256:4b314bc44fb7866fdb61151fc9899e96a95b7f74bec05ed06a9b7af703c1b52b"],"state_sha256":"e95fa0baa4c4a7e5fcc16c2eac6eb7b9d1b25771ff4f1c1f5b495c619062e767"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ozTGLwkSJTxGIpGP1P8/j6WFt/NP+E31lKDkaCdGYP+4SvWRF19Ch5tML6Qm68/hrvDXMxGpESDDRfVNnVujBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T08:24:08.272637Z","bundle_sha256":"188e0f2bab8f9ac2e5271478c3ba9d028c73c515ec7803343c289da4ec464573"}}