{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:Y6WFV7IIDRQBCAOTPLIOKPLFTJ","short_pith_number":"pith:Y6WFV7II","canonical_record":{"source":{"id":"2306.03761","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-06-06T15:22:07Z","cross_cats_sorted":["math.IT","physics.class-ph"],"title_canon_sha256":"a6ebfed19d527c83561063b50ad326d8384eb66f30bd19daecdb0035cec26b2a","abstract_canon_sha256":"89701c6d7a107c0d8376fd5d29b72930037a15384a7a5cabd106cfb5665a7d30"},"schema_version":"1.0"},"canonical_sha256":"c7ac5afd081c601101d37ad0e53d659a4f4ff18939db4da5e5d938beed5f6ebe","source":{"kind":"arxiv","id":"2306.03761","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.03761","created_at":"2026-07-05T06:18:01Z"},{"alias_kind":"arxiv_version","alias_value":"2306.03761v1","created_at":"2026-07-05T06:18:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.03761","created_at":"2026-07-05T06:18:01Z"},{"alias_kind":"pith_short_12","alias_value":"Y6WFV7IIDRQB","created_at":"2026-07-05T06:18:01Z"},{"alias_kind":"pith_short_16","alias_value":"Y6WFV7IIDRQBCAOT","created_at":"2026-07-05T06:18:01Z"},{"alias_kind":"pith_short_8","alias_value":"Y6WFV7II","created_at":"2026-07-05T06:18:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:Y6WFV7IIDRQBCAOTPLIOKPLFTJ","target":"record","payload":{"canonical_record":{"source":{"id":"2306.03761","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-06-06T15:22:07Z","cross_cats_sorted":["math.IT","physics.class-ph"],"title_canon_sha256":"a6ebfed19d527c83561063b50ad326d8384eb66f30bd19daecdb0035cec26b2a","abstract_canon_sha256":"89701c6d7a107c0d8376fd5d29b72930037a15384a7a5cabd106cfb5665a7d30"},"schema_version":"1.0"},"canonical_sha256":"c7ac5afd081c601101d37ad0e53d659a4f4ff18939db4da5e5d938beed5f6ebe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:18:01.842046Z","signature_b64":"m8vtQkXyiHMWlFV7IC4l1K4HhzAP7YUOdZFJsSItGtkRejQT1w3u7bL19o8Jn+S4MRb0HdFEEjYi+co0Yl7cBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c7ac5afd081c601101d37ad0e53d659a4f4ff18939db4da5e5d938beed5f6ebe","last_reissued_at":"2026-07-05T06:18:01.841696Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:18:01.841696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2306.03761","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":"2026-07-05T06:18:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JNqhjhUtykhysFo5Z3AAcRer0xCeDa0xw2GqFYEJOr2XvW/hyhtjFylHDk7W8lzPbTt4MMSCko7AvAAuAg5bDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T09:08:01.959632Z"},"content_sha256":"99fba198a4e13f2f6d61d4d9f604c2688ef9b4719994ce49a3d671344836ee42","schema_version":"1.0","event_id":"sha256:99fba198a4e13f2f6d61d4d9f604c2688ef9b4719994ce49a3d671344836ee42"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:Y6WFV7IIDRQBCAOTPLIOKPLFTJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Generalised Impedance Model of Wireless Links Assisted by Reconfigurable Intelligent Surfaces","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["math.IT","physics.class-ph"],"primary_cat":"cs.IT","authors_text":"Gabriele Gradoni, Keisuke Konno, Qiang Chen, Sergio Terranova","submitted_at":"2023-06-06T15:22:07Z","abstract_excerpt":"We devise an end-to-end communication channel model that describes the performance of RIS-assisted MIMO wireless links. The model borrows the impedance (interaction) matrix formalism from the Method of Moments and provides a physics-based communication model. In configurations where the transmit and receive antenna arrays are distant from the RIS beyond a wavelength, a reduced model provides accurate results for arbitrary RIS unit cell geometry. Importantly, the simplified model configures as a cascaded channel transfer matrix whose mathematical structure is compliant with widely accepted, but"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.03761","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/2306.03761/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":"2026-07-05T06:18:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iiSLMhNbPf2fYnAskKDo2r10TUk8hqD6+TMbzqihCYZWjerwZwbQCNv3hYO52lblX+75TzpFunZudMJRJibgDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T09:08:01.960125Z"},"content_sha256":"a78037e8d614871a695b75da4057ad1a3bdcceea232f0bfd21678dcd2e4e65b0","schema_version":"1.0","event_id":"sha256:a78037e8d614871a695b75da4057ad1a3bdcceea232f0bfd21678dcd2e4e65b0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y6WFV7IIDRQBCAOTPLIOKPLFTJ/bundle.json","state_url":"https://pith.science/pith/Y6WFV7IIDRQBCAOTPLIOKPLFTJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y6WFV7IIDRQBCAOTPLIOKPLFTJ/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":"2026-08-23T09:08:01Z","links":{"resolver":"https://pith.science/pith/Y6WFV7IIDRQBCAOTPLIOKPLFTJ","bundle":"https://pith.science/pith/Y6WFV7IIDRQBCAOTPLIOKPLFTJ/bundle.json","state":"https://pith.science/pith/Y6WFV7IIDRQBCAOTPLIOKPLFTJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y6WFV7IIDRQBCAOTPLIOKPLFTJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:Y6WFV7IIDRQBCAOTPLIOKPLFTJ","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":"89701c6d7a107c0d8376fd5d29b72930037a15384a7a5cabd106cfb5665a7d30","cross_cats_sorted":["math.IT","physics.class-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-06-06T15:22:07Z","title_canon_sha256":"a6ebfed19d527c83561063b50ad326d8384eb66f30bd19daecdb0035cec26b2a"},"schema_version":"1.0","source":{"id":"2306.03761","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.03761","created_at":"2026-07-05T06:18:01Z"},{"alias_kind":"arxiv_version","alias_value":"2306.03761v1","created_at":"2026-07-05T06:18:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.03761","created_at":"2026-07-05T06:18:01Z"},{"alias_kind":"pith_short_12","alias_value":"Y6WFV7IIDRQB","created_at":"2026-07-05T06:18:01Z"},{"alias_kind":"pith_short_16","alias_value":"Y6WFV7IIDRQBCAOT","created_at":"2026-07-05T06:18:01Z"},{"alias_kind":"pith_short_8","alias_value":"Y6WFV7II","created_at":"2026-07-05T06:18:01Z"}],"graph_snapshots":[{"event_id":"sha256:a78037e8d614871a695b75da4057ad1a3bdcceea232f0bfd21678dcd2e4e65b0","target":"graph","created_at":"2026-07-05T06:18:01Z","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/2306.03761/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We devise an end-to-end communication channel model that describes the performance of RIS-assisted MIMO wireless links. The model borrows the impedance (interaction) matrix formalism from the Method of Moments and provides a physics-based communication model. In configurations where the transmit and receive antenna arrays are distant from the RIS beyond a wavelength, a reduced model provides accurate results for arbitrary RIS unit cell geometry. Importantly, the simplified model configures as a cascaded channel transfer matrix whose mathematical structure is compliant with widely accepted, but","authors_text":"Gabriele Gradoni, Keisuke Konno, Qiang Chen, Sergio Terranova","cross_cats":["math.IT","physics.class-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-06-06T15:22:07Z","title":"Generalised Impedance Model of Wireless Links Assisted by Reconfigurable Intelligent Surfaces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.03761","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":"sha256:99fba198a4e13f2f6d61d4d9f604c2688ef9b4719994ce49a3d671344836ee42","target":"record","created_at":"2026-07-05T06:18:01Z","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":"89701c6d7a107c0d8376fd5d29b72930037a15384a7a5cabd106cfb5665a7d30","cross_cats_sorted":["math.IT","physics.class-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-06-06T15:22:07Z","title_canon_sha256":"a6ebfed19d527c83561063b50ad326d8384eb66f30bd19daecdb0035cec26b2a"},"schema_version":"1.0","source":{"id":"2306.03761","kind":"arxiv","version":1}},"canonical_sha256":"c7ac5afd081c601101d37ad0e53d659a4f4ff18939db4da5e5d938beed5f6ebe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c7ac5afd081c601101d37ad0e53d659a4f4ff18939db4da5e5d938beed5f6ebe","first_computed_at":"2026-07-05T06:18:01.841696Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:18:01.841696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m8vtQkXyiHMWlFV7IC4l1K4HhzAP7YUOdZFJsSItGtkRejQT1w3u7bL19o8Jn+S4MRb0HdFEEjYi+co0Yl7cBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:18:01.842046Z","signed_message":"canonical_sha256_bytes"},"source_id":"2306.03761","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99fba198a4e13f2f6d61d4d9f604c2688ef9b4719994ce49a3d671344836ee42","sha256:a78037e8d614871a695b75da4057ad1a3bdcceea232f0bfd21678dcd2e4e65b0"],"state_sha256":"33a32daeb4f0dd6046b2e84542649cbd732e2657925227017745a2abe2d3d891"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dSYF+d9QftNyXOWWq+XnM2xxu/CdjPY2TjwHtwGT7fpmcL7IqUNxMCoE/vas68GKMcLlRhiGGa05RLVBor5CBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T09:08:01.964710Z","bundle_sha256":"47ec393949283b3417bfcec32a65a4c25249151f9ff94d4e8c3a87244f98257e"}}