{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:RPQF3AWAMJHNF3FUU2I467BZRG","short_pith_number":"pith:RPQF3AWA","canonical_record":{"source":{"id":"1901.05720","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-01-17T10:35:40Z","cross_cats_sorted":[],"title_canon_sha256":"028a991df9f46b712754628d564b0ce2dbe0030539b4099e0d030c0d91a71373","abstract_canon_sha256":"37d88ab63fd749b05e9ddc8a0ac6d55fe5382534d197b1c5795a358945fe0001"},"schema_version":"1.0"},"canonical_sha256":"8be05d82c0624ed2ecb4a691cf7c3989b0023b38f2a95a3b4d2004cb20791416","source":{"kind":"arxiv","id":"1901.05720","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.05720","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"arxiv_version","alias_value":"1901.05720v1","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.05720","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"pith_short_12","alias_value":"RPQF3AWAMJHN","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"RPQF3AWAMJHNF3FU","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"RPQF3AWA","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:RPQF3AWAMJHNF3FUU2I467BZRG","target":"record","payload":{"canonical_record":{"source":{"id":"1901.05720","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-01-17T10:35:40Z","cross_cats_sorted":[],"title_canon_sha256":"028a991df9f46b712754628d564b0ce2dbe0030539b4099e0d030c0d91a71373","abstract_canon_sha256":"37d88ab63fd749b05e9ddc8a0ac6d55fe5382534d197b1c5795a358945fe0001"},"schema_version":"1.0"},"canonical_sha256":"8be05d82c0624ed2ecb4a691cf7c3989b0023b38f2a95a3b4d2004cb20791416","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:22.032098Z","signature_b64":"jM/zCwMCLM4HUCF89d7SuesaY2k526lD7vMhVQ2iwCQnCS3ngcSmmP1jlHqbst9HvxuXWDju0cv/tfm//ff0BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8be05d82c0624ed2ecb4a691cf7c3989b0023b38f2a95a3b4d2004cb20791416","last_reissued_at":"2026-05-17T23:48:22.031459Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:22.031459Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.05720","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":"2026-05-17T23:48:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hFcFT39DWxp9QLeazBpI2fAEcm4KTaVdrZzEMBjoI/cxLzv/5INHAVNNPpqUMns8QQG8VVzO1eu9+MULmVOWAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T11:59:29.466783Z"},"content_sha256":"1ac97bbda54919da576b68f5866d14c5266152828d17545009bc3f2a933993ce","schema_version":"1.0","event_id":"sha256:1ac97bbda54919da576b68f5866d14c5266152828d17545009bc3f2a933993ce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:RPQF3AWAMJHNF3FUU2I467BZRG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electromagnetic surface waves guided by the planar interface of isotropic chiral materials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Maimoona Naheed (Quaid-i-Azam University), Muhammad Faryad (Lahore University of Management Sciences), Tom G. Mackay (University of Edinburgh)","submitted_at":"2019-01-17T10:35:40Z","abstract_excerpt":"The propagation of electromagnetic surface waves guided by the planar interface of two isotropic chiral materials, namely materials $\\calA$ and $\\calB$, was investigated by numerically solving the associated canonical boundary-value problem. Isotropic chiral material $\\calB$ was modeled as a homogenized composite material, arising from the homogenization of an isotropic chiral component material and an isotropic achiral, nonmagnetic, component material characterized by the relative permittivity $\\eps_a^\\calB$. Changes in the nature of the surface waves were explored as the volume fraction $f_a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.05720","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":"2026-05-17T23:48:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mUugIwdUin6gR6HH8Yzm7rGTulzIsBaWQ6SPcOr7SXp0Fl6kRraK3EM3YnL/FegYhRgtulVDWLwEpZlTy6IOBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T11:59:29.467437Z"},"content_sha256":"e6e4b89165e8504b51329752680c76508d122980d2c76fbc275a9a23c591e3e5","schema_version":"1.0","event_id":"sha256:e6e4b89165e8504b51329752680c76508d122980d2c76fbc275a9a23c591e3e5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RPQF3AWAMJHNF3FUU2I467BZRG/bundle.json","state_url":"https://pith.science/pith/RPQF3AWAMJHNF3FUU2I467BZRG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RPQF3AWAMJHNF3FUU2I467BZRG/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":"2026-06-07T11:59:29Z","links":{"resolver":"https://pith.science/pith/RPQF3AWAMJHNF3FUU2I467BZRG","bundle":"https://pith.science/pith/RPQF3AWAMJHNF3FUU2I467BZRG/bundle.json","state":"https://pith.science/pith/RPQF3AWAMJHNF3FUU2I467BZRG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RPQF3AWAMJHNF3FUU2I467BZRG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:RPQF3AWAMJHNF3FUU2I467BZRG","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":"37d88ab63fd749b05e9ddc8a0ac6d55fe5382534d197b1c5795a358945fe0001","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-01-17T10:35:40Z","title_canon_sha256":"028a991df9f46b712754628d564b0ce2dbe0030539b4099e0d030c0d91a71373"},"schema_version":"1.0","source":{"id":"1901.05720","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.05720","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"arxiv_version","alias_value":"1901.05720v1","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.05720","created_at":"2026-05-17T23:48:22Z"},{"alias_kind":"pith_short_12","alias_value":"RPQF3AWAMJHN","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"RPQF3AWAMJHNF3FU","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"RPQF3AWA","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:e6e4b89165e8504b51329752680c76508d122980d2c76fbc275a9a23c591e3e5","target":"graph","created_at":"2026-05-17T23:48:22Z","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":"The propagation of electromagnetic surface waves guided by the planar interface of two isotropic chiral materials, namely materials $\\calA$ and $\\calB$, was investigated by numerically solving the associated canonical boundary-value problem. Isotropic chiral material $\\calB$ was modeled as a homogenized composite material, arising from the homogenization of an isotropic chiral component material and an isotropic achiral, nonmagnetic, component material characterized by the relative permittivity $\\eps_a^\\calB$. Changes in the nature of the surface waves were explored as the volume fraction $f_a","authors_text":"Maimoona Naheed (Quaid-i-Azam University), Muhammad Faryad (Lahore University of Management Sciences), Tom G. Mackay (University of Edinburgh)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-01-17T10:35:40Z","title":"Electromagnetic surface waves guided by the planar interface of isotropic chiral materials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.05720","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":"sha256:1ac97bbda54919da576b68f5866d14c5266152828d17545009bc3f2a933993ce","target":"record","created_at":"2026-05-17T23:48:22Z","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":"37d88ab63fd749b05e9ddc8a0ac6d55fe5382534d197b1c5795a358945fe0001","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-01-17T10:35:40Z","title_canon_sha256":"028a991df9f46b712754628d564b0ce2dbe0030539b4099e0d030c0d91a71373"},"schema_version":"1.0","source":{"id":"1901.05720","kind":"arxiv","version":1}},"canonical_sha256":"8be05d82c0624ed2ecb4a691cf7c3989b0023b38f2a95a3b4d2004cb20791416","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8be05d82c0624ed2ecb4a691cf7c3989b0023b38f2a95a3b4d2004cb20791416","first_computed_at":"2026-05-17T23:48:22.031459Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:22.031459Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jM/zCwMCLM4HUCF89d7SuesaY2k526lD7vMhVQ2iwCQnCS3ngcSmmP1jlHqbst9HvxuXWDju0cv/tfm//ff0BA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:22.032098Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.05720","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ac97bbda54919da576b68f5866d14c5266152828d17545009bc3f2a933993ce","sha256:e6e4b89165e8504b51329752680c76508d122980d2c76fbc275a9a23c591e3e5"],"state_sha256":"9bd0b92be36fb62aa0ff66570834d8aed8f6b4639cce3e6f4787a3d39c4e2564"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WWo1Tv+fCLutxjv0BX+P1p25g/KqpRgfJuawQvwqow+ZloM6pnTtVZOrTWQdDHfMOzYzNd4HD4hqQmQF8SlQCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T11:59:29.469594Z","bundle_sha256":"b55d306adbe7a1ad76018c773515570302a062372f1aeeedf78c1100d29a669b"}}