{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:PBF3RH4NG6NKXBLJTSS65GOJT7","short_pith_number":"pith:PBF3RH4N","canonical_record":{"source":{"id":"2606.26808","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2026-06-25T09:46:45Z","cross_cats_sorted":[],"title_canon_sha256":"230aae445bcd2fc2315c0c5ea7f188bd6928140119eeb37fbb4e2375dadbc093","abstract_canon_sha256":"83b0714590a3d2bfb8691a9f18746ca59c0aef2e23ec6ec4d13b975e9c413dec"},"schema_version":"1.0"},"canonical_sha256":"784bb89f8d379aab85699ca5ee99c99ff5d827b4cd7f2c4c65b94f54e18a9f79","source":{"kind":"arxiv","id":"2606.26808","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.26808","created_at":"2026-06-26T01:16:00Z"},{"alias_kind":"arxiv_version","alias_value":"2606.26808v1","created_at":"2026-06-26T01:16:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.26808","created_at":"2026-06-26T01:16:00Z"},{"alias_kind":"pith_short_12","alias_value":"PBF3RH4NG6NK","created_at":"2026-06-26T01:16:00Z"},{"alias_kind":"pith_short_16","alias_value":"PBF3RH4NG6NKXBLJ","created_at":"2026-06-26T01:16:00Z"},{"alias_kind":"pith_short_8","alias_value":"PBF3RH4N","created_at":"2026-06-26T01:16:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:PBF3RH4NG6NKXBLJTSS65GOJT7","target":"record","payload":{"canonical_record":{"source":{"id":"2606.26808","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2026-06-25T09:46:45Z","cross_cats_sorted":[],"title_canon_sha256":"230aae445bcd2fc2315c0c5ea7f188bd6928140119eeb37fbb4e2375dadbc093","abstract_canon_sha256":"83b0714590a3d2bfb8691a9f18746ca59c0aef2e23ec6ec4d13b975e9c413dec"},"schema_version":"1.0"},"canonical_sha256":"784bb89f8d379aab85699ca5ee99c99ff5d827b4cd7f2c4c65b94f54e18a9f79","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-26T01:16:00.399374Z","signature_b64":"O7/mKUicuqVX3mVpTmXQNLrJJSCwLeHxKz8yFV4eGzgIOebdJIgAgXGJwvyMYL1/s3aLLAxYe+8RCRm5pVvdCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"784bb89f8d379aab85699ca5ee99c99ff5d827b4cd7f2c4c65b94f54e18a9f79","last_reissued_at":"2026-06-26T01:16:00.398954Z","signature_status":"signed_v1","first_computed_at":"2026-06-26T01:16:00.398954Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.26808","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":"2026-06-26T01:16:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CLKEI0VIFm05X014QdlgSd03J9GYYx+ujGtyaaLaECiwVnSz5XLG95IGWwd6r7VzB4vB4ij1o98yXWpNR9kgAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:51:13.177893Z"},"content_sha256":"947d373abda9dbfc456ea76a48de5380b955bb4d20b1606f75a83590fda5e1c0","schema_version":"1.0","event_id":"sha256:947d373abda9dbfc456ea76a48de5380b955bb4d20b1606f75a83590fda5e1c0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:PBF3RH4NG6NKXBLJTSS65GOJT7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Experimental Assessment of the Spatial and Frequency Selectivity of Reconfigurable Intelligent Surfaces","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.NI","authors_text":"Ahmad Shokair, Amelie Hennequart, Cyrille Morin (MARACAS), Geoffroy Lerosey, Leonardo S Cardoso (CITI, MARACAS), Maxime Guillaud (MARACAS), Youssef Nasser","submitted_at":"2026-06-25T09:46:45Z","abstract_excerpt":"This work investigates the impact of reconfigurable intelligent surfaces (RIS) on radio links other than the one for which the RIS configuration is optimized. We consider three different scenarios in which a secondary communication link could be affected by a RIS whose configuration is optimized for a primary communication link operating in the vicinity, on the same or on different frequencies. This question is investigated experimentally in the FR1 band, using the CorteXlab radio testbed and a Greenerwave RIS. We show that the impact, in terms of received power and impact on the channel phase"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.26808","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/2606.26808/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":"2026-06-26T01:16:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RlS2L5VpkUymVTp4HSJbpk5ZIqA+uV2xgKzTaR0gg9StgunI9K2LJCp/fU/dGEKZMdSL2JuYtvGXYyVRKPrnDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:51:13.178442Z"},"content_sha256":"d14353581b2d260abc1d78fc89d5ddf2fb389c964a0759d626f8beda1a72d5f4","schema_version":"1.0","event_id":"sha256:d14353581b2d260abc1d78fc89d5ddf2fb389c964a0759d626f8beda1a72d5f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PBF3RH4NG6NKXBLJTSS65GOJT7/bundle.json","state_url":"https://pith.science/pith/PBF3RH4NG6NKXBLJTSS65GOJT7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PBF3RH4NG6NKXBLJTSS65GOJT7/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":"2026-08-03T19:51:13Z","links":{"resolver":"https://pith.science/pith/PBF3RH4NG6NKXBLJTSS65GOJT7","bundle":"https://pith.science/pith/PBF3RH4NG6NKXBLJTSS65GOJT7/bundle.json","state":"https://pith.science/pith/PBF3RH4NG6NKXBLJTSS65GOJT7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PBF3RH4NG6NKXBLJTSS65GOJT7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:PBF3RH4NG6NKXBLJTSS65GOJT7","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":"83b0714590a3d2bfb8691a9f18746ca59c0aef2e23ec6ec4d13b975e9c413dec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2026-06-25T09:46:45Z","title_canon_sha256":"230aae445bcd2fc2315c0c5ea7f188bd6928140119eeb37fbb4e2375dadbc093"},"schema_version":"1.0","source":{"id":"2606.26808","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.26808","created_at":"2026-06-26T01:16:00Z"},{"alias_kind":"arxiv_version","alias_value":"2606.26808v1","created_at":"2026-06-26T01:16:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.26808","created_at":"2026-06-26T01:16:00Z"},{"alias_kind":"pith_short_12","alias_value":"PBF3RH4NG6NK","created_at":"2026-06-26T01:16:00Z"},{"alias_kind":"pith_short_16","alias_value":"PBF3RH4NG6NKXBLJ","created_at":"2026-06-26T01:16:00Z"},{"alias_kind":"pith_short_8","alias_value":"PBF3RH4N","created_at":"2026-06-26T01:16:00Z"}],"graph_snapshots":[{"event_id":"sha256:d14353581b2d260abc1d78fc89d5ddf2fb389c964a0759d626f8beda1a72d5f4","target":"graph","created_at":"2026-06-26T01:16:00Z","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/2606.26808/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This work investigates the impact of reconfigurable intelligent surfaces (RIS) on radio links other than the one for which the RIS configuration is optimized. We consider three different scenarios in which a secondary communication link could be affected by a RIS whose configuration is optimized for a primary communication link operating in the vicinity, on the same or on different frequencies. This question is investigated experimentally in the FR1 band, using the CorteXlab radio testbed and a Greenerwave RIS. We show that the impact, in terms of received power and impact on the channel phase","authors_text":"Ahmad Shokair, Amelie Hennequart, Cyrille Morin (MARACAS), Geoffroy Lerosey, Leonardo S Cardoso (CITI, MARACAS), Maxime Guillaud (MARACAS), Youssef Nasser","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2026-06-25T09:46:45Z","title":"An Experimental Assessment of the Spatial and Frequency Selectivity of Reconfigurable Intelligent Surfaces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.26808","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":"sha256:947d373abda9dbfc456ea76a48de5380b955bb4d20b1606f75a83590fda5e1c0","target":"record","created_at":"2026-06-26T01:16:00Z","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":"83b0714590a3d2bfb8691a9f18746ca59c0aef2e23ec6ec4d13b975e9c413dec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2026-06-25T09:46:45Z","title_canon_sha256":"230aae445bcd2fc2315c0c5ea7f188bd6928140119eeb37fbb4e2375dadbc093"},"schema_version":"1.0","source":{"id":"2606.26808","kind":"arxiv","version":1}},"canonical_sha256":"784bb89f8d379aab85699ca5ee99c99ff5d827b4cd7f2c4c65b94f54e18a9f79","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"784bb89f8d379aab85699ca5ee99c99ff5d827b4cd7f2c4c65b94f54e18a9f79","first_computed_at":"2026-06-26T01:16:00.398954Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-26T01:16:00.398954Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O7/mKUicuqVX3mVpTmXQNLrJJSCwLeHxKz8yFV4eGzgIOebdJIgAgXGJwvyMYL1/s3aLLAxYe+8RCRm5pVvdCA==","signature_status":"signed_v1","signed_at":"2026-06-26T01:16:00.399374Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.26808","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:947d373abda9dbfc456ea76a48de5380b955bb4d20b1606f75a83590fda5e1c0","sha256:d14353581b2d260abc1d78fc89d5ddf2fb389c964a0759d626f8beda1a72d5f4"],"state_sha256":"57c99e9a01288b3e9d5a151c34bbebd4c881d095e4bd15e68883647d49445f1c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vb38q2XYKiTJkOYZp675qyjd1Lpqlhb6vIi5BhqpRhcCEvjYhb/naKpH6KCwf2VKdrZ5Soztq0cJueyBjilRCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T19:51:13.182105Z","bundle_sha256":"9ce1ef702127548a5fa08038935892072ee8e73a477121e21b0b793171065131"}}