{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SCWQPC4YY5ZMQFR77AVAOGPJFV","short_pith_number":"pith:SCWQPC4Y","canonical_record":{"source":{"id":"1811.02831","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-11-07T10:55:04Z","cross_cats_sorted":[],"title_canon_sha256":"2976bd2a631948c1e58008484fcf5a0c2013afed6770f4de494d42e6c3e5b0cf","abstract_canon_sha256":"6900247a52efbd80f14d6b38749c445850bfb59362c97af87d256e0cddeb4bfe"},"schema_version":"1.0"},"canonical_sha256":"90ad078b98c772c8163ff82a0719e92d7f93028cabe62ac91c409b79812da601","source":{"kind":"arxiv","id":"1811.02831","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.02831","created_at":"2026-05-17T23:47:29Z"},{"alias_kind":"arxiv_version","alias_value":"1811.02831v1","created_at":"2026-05-17T23:47:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02831","created_at":"2026-05-17T23:47:29Z"},{"alias_kind":"pith_short_12","alias_value":"SCWQPC4YY5ZM","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SCWQPC4YY5ZMQFR7","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SCWQPC4Y","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SCWQPC4YY5ZMQFR77AVAOGPJFV","target":"record","payload":{"canonical_record":{"source":{"id":"1811.02831","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-11-07T10:55:04Z","cross_cats_sorted":[],"title_canon_sha256":"2976bd2a631948c1e58008484fcf5a0c2013afed6770f4de494d42e6c3e5b0cf","abstract_canon_sha256":"6900247a52efbd80f14d6b38749c445850bfb59362c97af87d256e0cddeb4bfe"},"schema_version":"1.0"},"canonical_sha256":"90ad078b98c772c8163ff82a0719e92d7f93028cabe62ac91c409b79812da601","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:29.705799Z","signature_b64":"o3MdcS1JOfnetxIvlqrPpO1KpHHHkd8MHxIrkvtPgQDRt2hVmygfr3h0r+MUC2vJCEnF50TX8aqnQcYb3OK+Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90ad078b98c772c8163ff82a0719e92d7f93028cabe62ac91c409b79812da601","last_reissued_at":"2026-05-17T23:47:29.704427Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:29.704427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.02831","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":"2026-05-17T23:47:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DpYoLcOx/RlG+fYSHho3EL18qaTmHM0Jia4RsXJ1FDRuFyXm8PeS+8RFgIgOIBEBhHxvIHE+q8PNZEbqUY6YCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:17:06.248402Z"},"content_sha256":"b273dbb104cd4947afed2520ef0d0642b342eb02518cbe7e6ba0aff054d522a0","schema_version":"1.0","event_id":"sha256:b273dbb104cd4947afed2520ef0d0642b342eb02518cbe7e6ba0aff054d522a0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SCWQPC4YY5ZMQFR77AVAOGPJFV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Directional Scattering Cancellation for an Electrically Large Dielectric Sphere","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Carlo Forestiere, Giovanni Miano, Mariano Pascale, Roberto Tricarico","submitted_at":"2018-11-07T10:55:04Z","abstract_excerpt":"We demonstrate the directional scattering cancellation for a dielectric sphere of radius up to ten times the incident wavelength, by coating it with a surface of finite conductivity. Specifically, the problem of determining the values of the surface conductivity that guarantees destructive interference among hundreds of multipolar scattering orders at the prescribed angular direction is reduced to the determination of the zeros of a polynomial, whose coefficients are analytically known."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02831","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":"2026-05-17T23:47:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JaMNDHzabfqfsJj6RnqMw6kC+6VUDxGCiutHfrwLcjpknIxUvjdhIkUanoOcx1IWdbclPSN15MEyROT9X62iDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T13:17:06.249114Z"},"content_sha256":"c3c65ec62697d3c8cde80f2c070a3f2088aa216dfb74d2079e7dee526fd30799","schema_version":"1.0","event_id":"sha256:c3c65ec62697d3c8cde80f2c070a3f2088aa216dfb74d2079e7dee526fd30799"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SCWQPC4YY5ZMQFR77AVAOGPJFV/bundle.json","state_url":"https://pith.science/pith/SCWQPC4YY5ZMQFR77AVAOGPJFV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SCWQPC4YY5ZMQFR77AVAOGPJFV/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":"2026-05-25T13:17:06Z","links":{"resolver":"https://pith.science/pith/SCWQPC4YY5ZMQFR77AVAOGPJFV","bundle":"https://pith.science/pith/SCWQPC4YY5ZMQFR77AVAOGPJFV/bundle.json","state":"https://pith.science/pith/SCWQPC4YY5ZMQFR77AVAOGPJFV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SCWQPC4YY5ZMQFR77AVAOGPJFV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SCWQPC4YY5ZMQFR77AVAOGPJFV","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":"6900247a52efbd80f14d6b38749c445850bfb59362c97af87d256e0cddeb4bfe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-11-07T10:55:04Z","title_canon_sha256":"2976bd2a631948c1e58008484fcf5a0c2013afed6770f4de494d42e6c3e5b0cf"},"schema_version":"1.0","source":{"id":"1811.02831","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.02831","created_at":"2026-05-17T23:47:29Z"},{"alias_kind":"arxiv_version","alias_value":"1811.02831v1","created_at":"2026-05-17T23:47:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02831","created_at":"2026-05-17T23:47:29Z"},{"alias_kind":"pith_short_12","alias_value":"SCWQPC4YY5ZM","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SCWQPC4YY5ZMQFR7","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SCWQPC4Y","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:c3c65ec62697d3c8cde80f2c070a3f2088aa216dfb74d2079e7dee526fd30799","target":"graph","created_at":"2026-05-17T23:47:29Z","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":"We demonstrate the directional scattering cancellation for a dielectric sphere of radius up to ten times the incident wavelength, by coating it with a surface of finite conductivity. Specifically, the problem of determining the values of the surface conductivity that guarantees destructive interference among hundreds of multipolar scattering orders at the prescribed angular direction is reduced to the determination of the zeros of a polynomial, whose coefficients are analytically known.","authors_text":"Carlo Forestiere, Giovanni Miano, Mariano Pascale, Roberto Tricarico","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-11-07T10:55:04Z","title":"Directional Scattering Cancellation for an Electrically Large Dielectric Sphere"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02831","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:b273dbb104cd4947afed2520ef0d0642b342eb02518cbe7e6ba0aff054d522a0","target":"record","created_at":"2026-05-17T23:47:29Z","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":"6900247a52efbd80f14d6b38749c445850bfb59362c97af87d256e0cddeb4bfe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-11-07T10:55:04Z","title_canon_sha256":"2976bd2a631948c1e58008484fcf5a0c2013afed6770f4de494d42e6c3e5b0cf"},"schema_version":"1.0","source":{"id":"1811.02831","kind":"arxiv","version":1}},"canonical_sha256":"90ad078b98c772c8163ff82a0719e92d7f93028cabe62ac91c409b79812da601","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90ad078b98c772c8163ff82a0719e92d7f93028cabe62ac91c409b79812da601","first_computed_at":"2026-05-17T23:47:29.704427Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:29.704427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o3MdcS1JOfnetxIvlqrPpO1KpHHHkd8MHxIrkvtPgQDRt2hVmygfr3h0r+MUC2vJCEnF50TX8aqnQcYb3OK+Ag==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:29.705799Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.02831","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b273dbb104cd4947afed2520ef0d0642b342eb02518cbe7e6ba0aff054d522a0","sha256:c3c65ec62697d3c8cde80f2c070a3f2088aa216dfb74d2079e7dee526fd30799"],"state_sha256":"c5389bc7d11469ad6aecf2c8e915a20e3e02579fe922e5691843d2fc23551efa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OnNqjRdMq2TVzu5gOYv8RZ0IEYX29rL+NiuMxHaEw5j0j5zYLqGMXV+hv7qKwRJH2A3MTgtJOXZJbmDvv9n6Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T13:17:06.252732Z","bundle_sha256":"b200aa687b50e9d2991ef9481e0ac747ce2194950495ad71260a16e1c29119e1"}}