{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:MO5GNN3VDP6PAOUBWUKC2OV4DE","short_pith_number":"pith:MO5GNN3V","canonical_record":{"source":{"id":"2502.03994","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2025-02-06T11:51:36Z","cross_cats_sorted":[],"title_canon_sha256":"0e04b7777a09c1bb03d36c2fb126d07a7b5f1e2299e07df04bfc51d88fc1fdfe","abstract_canon_sha256":"3ad00943f7914c48fe7922897080c426123b46ce11ac6c218d592e3649e6a148"},"schema_version":"1.0"},"canonical_sha256":"63ba66b7751bfcf03a81b5142d3abc19312e4661bfeae6c8cec23ff2cdefaf90","source":{"kind":"arxiv","id":"2502.03994","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.03994","created_at":"2026-07-05T10:10:32Z"},{"alias_kind":"arxiv_version","alias_value":"2502.03994v1","created_at":"2026-07-05T10:10:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.03994","created_at":"2026-07-05T10:10:32Z"},{"alias_kind":"pith_short_12","alias_value":"MO5GNN3VDP6P","created_at":"2026-07-05T10:10:32Z"},{"alias_kind":"pith_short_16","alias_value":"MO5GNN3VDP6PAOUB","created_at":"2026-07-05T10:10:32Z"},{"alias_kind":"pith_short_8","alias_value":"MO5GNN3V","created_at":"2026-07-05T10:10:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:MO5GNN3VDP6PAOUBWUKC2OV4DE","target":"record","payload":{"canonical_record":{"source":{"id":"2502.03994","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2025-02-06T11:51:36Z","cross_cats_sorted":[],"title_canon_sha256":"0e04b7777a09c1bb03d36c2fb126d07a7b5f1e2299e07df04bfc51d88fc1fdfe","abstract_canon_sha256":"3ad00943f7914c48fe7922897080c426123b46ce11ac6c218d592e3649e6a148"},"schema_version":"1.0"},"canonical_sha256":"63ba66b7751bfcf03a81b5142d3abc19312e4661bfeae6c8cec23ff2cdefaf90","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:10:32.473707Z","signature_b64":"Qdb7iOT2YBP7xcxEZR7WycQ10WPDgHxuKtfERtxN01J/uNS/FYmAg93uN0NpFb4BGvt3ykCR+oAFZtqP9NYoBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"63ba66b7751bfcf03a81b5142d3abc19312e4661bfeae6c8cec23ff2cdefaf90","last_reissued_at":"2026-07-05T10:10:32.473292Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:10:32.473292Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.03994","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":"2026-07-05T10:10:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BF2gq7nSVTB1qTU/5DQRbjVEJPauo5/7BJBVqze64wN7WiyTbmjr0xdr3bOLqC0g70wGA5NUKLKLQvqJZSH4Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T20:53:25.541955Z"},"content_sha256":"aef0711cb98064c571df07465694813675a158a8c89feede422848969383c1c5","schema_version":"1.0","event_id":"sha256:aef0711cb98064c571df07465694813675a158a8c89feede422848969383c1c5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:MO5GNN3VDP6PAOUBWUKC2OV4DE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pre-Optimized Irregular Arrays versus Moveable Antennas in Multi-User MIMO Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Alva Kosasih, Amna Irshad, Emil Bj\\\"ornson, Vitaly Petrov","submitted_at":"2025-02-06T11:51:36Z","abstract_excerpt":"Massive multiple-input multiple-output (MIMO) systems exploit the spatial diversity achieved with an array of many antennas to perform spatial multiplexing of many users. Similar performance can be achieved using fewer antennas if movable antenna (MA) elements are used instead. MA-enabled arrays can dynamically change the antenna locations, mechanically or electrically, to achieve maximum spatial diversity for the current propagation conditions. However, optimizing the antenna locations for each channel realization is computationally excessive, requires channel knowledge for all conceivable lo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.03994","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/2502.03994/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":"2026-07-05T10:10:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hfZy8lwFi3PMtHsfioJJd5lZWzlKlYb1WepqiV1ukIqmM4pbjyo/qn1oMbP3ox06f6opyu0TgPCJS2MK2SBADg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T20:53:25.542487Z"},"content_sha256":"2c2005a9b754d54fbddda44f784232830d039c0c7375b2cf6b2c9417809d1c9c","schema_version":"1.0","event_id":"sha256:2c2005a9b754d54fbddda44f784232830d039c0c7375b2cf6b2c9417809d1c9c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MO5GNN3VDP6PAOUBWUKC2OV4DE/bundle.json","state_url":"https://pith.science/pith/MO5GNN3VDP6PAOUBWUKC2OV4DE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MO5GNN3VDP6PAOUBWUKC2OV4DE/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":"2026-08-09T20:53:25Z","links":{"resolver":"https://pith.science/pith/MO5GNN3VDP6PAOUBWUKC2OV4DE","bundle":"https://pith.science/pith/MO5GNN3VDP6PAOUBWUKC2OV4DE/bundle.json","state":"https://pith.science/pith/MO5GNN3VDP6PAOUBWUKC2OV4DE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MO5GNN3VDP6PAOUBWUKC2OV4DE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:MO5GNN3VDP6PAOUBWUKC2OV4DE","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":"3ad00943f7914c48fe7922897080c426123b46ce11ac6c218d592e3649e6a148","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2025-02-06T11:51:36Z","title_canon_sha256":"0e04b7777a09c1bb03d36c2fb126d07a7b5f1e2299e07df04bfc51d88fc1fdfe"},"schema_version":"1.0","source":{"id":"2502.03994","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.03994","created_at":"2026-07-05T10:10:32Z"},{"alias_kind":"arxiv_version","alias_value":"2502.03994v1","created_at":"2026-07-05T10:10:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.03994","created_at":"2026-07-05T10:10:32Z"},{"alias_kind":"pith_short_12","alias_value":"MO5GNN3VDP6P","created_at":"2026-07-05T10:10:32Z"},{"alias_kind":"pith_short_16","alias_value":"MO5GNN3VDP6PAOUB","created_at":"2026-07-05T10:10:32Z"},{"alias_kind":"pith_short_8","alias_value":"MO5GNN3V","created_at":"2026-07-05T10:10:32Z"}],"graph_snapshots":[{"event_id":"sha256:2c2005a9b754d54fbddda44f784232830d039c0c7375b2cf6b2c9417809d1c9c","target":"graph","created_at":"2026-07-05T10:10:32Z","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/2502.03994/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Massive multiple-input multiple-output (MIMO) systems exploit the spatial diversity achieved with an array of many antennas to perform spatial multiplexing of many users. Similar performance can be achieved using fewer antennas if movable antenna (MA) elements are used instead. MA-enabled arrays can dynamically change the antenna locations, mechanically or electrically, to achieve maximum spatial diversity for the current propagation conditions. However, optimizing the antenna locations for each channel realization is computationally excessive, requires channel knowledge for all conceivable lo","authors_text":"Alva Kosasih, Amna Irshad, Emil Bj\\\"ornson, Vitaly Petrov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2025-02-06T11:51:36Z","title":"Pre-Optimized Irregular Arrays versus Moveable Antennas in Multi-User MIMO Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.03994","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:aef0711cb98064c571df07465694813675a158a8c89feede422848969383c1c5","target":"record","created_at":"2026-07-05T10:10:32Z","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":"3ad00943f7914c48fe7922897080c426123b46ce11ac6c218d592e3649e6a148","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2025-02-06T11:51:36Z","title_canon_sha256":"0e04b7777a09c1bb03d36c2fb126d07a7b5f1e2299e07df04bfc51d88fc1fdfe"},"schema_version":"1.0","source":{"id":"2502.03994","kind":"arxiv","version":1}},"canonical_sha256":"63ba66b7751bfcf03a81b5142d3abc19312e4661bfeae6c8cec23ff2cdefaf90","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"63ba66b7751bfcf03a81b5142d3abc19312e4661bfeae6c8cec23ff2cdefaf90","first_computed_at":"2026-07-05T10:10:32.473292Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:10:32.473292Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Qdb7iOT2YBP7xcxEZR7WycQ10WPDgHxuKtfERtxN01J/uNS/FYmAg93uN0NpFb4BGvt3ykCR+oAFZtqP9NYoBw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:10:32.473707Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.03994","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aef0711cb98064c571df07465694813675a158a8c89feede422848969383c1c5","sha256:2c2005a9b754d54fbddda44f784232830d039c0c7375b2cf6b2c9417809d1c9c"],"state_sha256":"5dd19cd009b52245b5da7b29b2e729a9969ec6e70e8dcd15f3ff8ca5a027866b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Di97o0iLvR0c2TmCu12Acix4bxqtk1Cd6VH31WlwubZXoZkessnV8vpI0LOonEGkmCVQlLawu9Phtg7pho+6Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T20:53:25.548311Z","bundle_sha256":"130ca6c33039007b4dc47dabedc9d0bdba85d1ae23774fbe238f462ea8488d50"}}