{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:UBOOVY2Y4RCV5ENFGR3S5E5TNI","short_pith_number":"pith:UBOOVY2Y","canonical_record":{"source":{"id":"2011.12214","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-11-18T16:00:03Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"a761f07d06b4119ee73b435a7ad716377954e4c5c3f2b43a21dff4b124389f83","abstract_canon_sha256":"1c4eefab70949a44fe806fa960bf578dbc2296127c7625275d1c94fe6b3e2aca"},"schema_version":"1.0"},"canonical_sha256":"a05ceae358e4455e91a534772e93b36a0911bc54dd158d7bb7d531777240481d","source":{"kind":"arxiv","id":"2011.12214","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.12214","created_at":"2026-07-05T01:54:09Z"},{"alias_kind":"arxiv_version","alias_value":"2011.12214v1","created_at":"2026-07-05T01:54:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.12214","created_at":"2026-07-05T01:54:09Z"},{"alias_kind":"pith_short_12","alias_value":"UBOOVY2Y4RCV","created_at":"2026-07-05T01:54:09Z"},{"alias_kind":"pith_short_16","alias_value":"UBOOVY2Y4RCV5ENF","created_at":"2026-07-05T01:54:09Z"},{"alias_kind":"pith_short_8","alias_value":"UBOOVY2Y","created_at":"2026-07-05T01:54:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:UBOOVY2Y4RCV5ENFGR3S5E5TNI","target":"record","payload":{"canonical_record":{"source":{"id":"2011.12214","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-11-18T16:00:03Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"a761f07d06b4119ee73b435a7ad716377954e4c5c3f2b43a21dff4b124389f83","abstract_canon_sha256":"1c4eefab70949a44fe806fa960bf578dbc2296127c7625275d1c94fe6b3e2aca"},"schema_version":"1.0"},"canonical_sha256":"a05ceae358e4455e91a534772e93b36a0911bc54dd158d7bb7d531777240481d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:54:09.060868Z","signature_b64":"LyONxmu/gXtuPZjD9AyGCmg/meYo5FzzUQ6IwoltqKVTbaA8YGZiWcT1/4TpTL1RAnUFsnZFgy8RcvW/LWP/DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a05ceae358e4455e91a534772e93b36a0911bc54dd158d7bb7d531777240481d","last_reissued_at":"2026-07-05T01:54:09.060470Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:54:09.060470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.12214","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":"2026-07-05T01:54:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FCOhvfTVq8nvLacFQdtm+9OdDY9fJnsRoVO25gr2HMI1ZhECVxAHKO3WyaH+whscFmW4OxvbUbJXHE3heA/8CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T03:57:50.619381Z"},"content_sha256":"7c5ce4db0e3a8f2421497c8c69f120e4b602d49faab72ccdc2262852314f1327","schema_version":"1.0","event_id":"sha256:7c5ce4db0e3a8f2421497c8c69f120e4b602d49faab72ccdc2262852314f1327"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:UBOOVY2Y4RCV5ENFGR3S5E5TNI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Joint Wireless-Optical Front-haul Solution for Multi-user Massive MIMO 5G RAN","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"eess.SP","authors_text":"Roman Dischler, Sivarama Venkatesan, Son T. Le, Stefan Wesemann","submitted_at":"2020-11-18T16:00:03Z","abstract_excerpt":"We demonstrate a high capacity IF-over-fiber mobile fronthaul solution for multi-user massive MIMO 5G RAN. Using this scheme, a record aggregated radio bandwidth of 25.6 GHz was transmitted on a single optical wavelength over 40 km without fiber chromatic dispersion compensation"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.12214","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/2011.12214/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":"2026-07-05T01:54:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QnqwElihb+LzP+BFhqxcaoLqI66RN2+usmBj8U+1OKGedRMUVm/uXgUaGkuy8nYIiNibfs6e/g21q4K3Dk12DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T03:57:50.619875Z"},"content_sha256":"cbdbecd03f2864ca355e6fa10310ac0746dbfb7a20be369ab4840e4813e48f07","schema_version":"1.0","event_id":"sha256:cbdbecd03f2864ca355e6fa10310ac0746dbfb7a20be369ab4840e4813e48f07"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UBOOVY2Y4RCV5ENFGR3S5E5TNI/bundle.json","state_url":"https://pith.science/pith/UBOOVY2Y4RCV5ENFGR3S5E5TNI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UBOOVY2Y4RCV5ENFGR3S5E5TNI/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":"2026-08-22T03:57:50Z","links":{"resolver":"https://pith.science/pith/UBOOVY2Y4RCV5ENFGR3S5E5TNI","bundle":"https://pith.science/pith/UBOOVY2Y4RCV5ENFGR3S5E5TNI/bundle.json","state":"https://pith.science/pith/UBOOVY2Y4RCV5ENFGR3S5E5TNI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UBOOVY2Y4RCV5ENFGR3S5E5TNI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:UBOOVY2Y4RCV5ENFGR3S5E5TNI","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":"1c4eefab70949a44fe806fa960bf578dbc2296127c7625275d1c94fe6b3e2aca","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-11-18T16:00:03Z","title_canon_sha256":"a761f07d06b4119ee73b435a7ad716377954e4c5c3f2b43a21dff4b124389f83"},"schema_version":"1.0","source":{"id":"2011.12214","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.12214","created_at":"2026-07-05T01:54:09Z"},{"alias_kind":"arxiv_version","alias_value":"2011.12214v1","created_at":"2026-07-05T01:54:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.12214","created_at":"2026-07-05T01:54:09Z"},{"alias_kind":"pith_short_12","alias_value":"UBOOVY2Y4RCV","created_at":"2026-07-05T01:54:09Z"},{"alias_kind":"pith_short_16","alias_value":"UBOOVY2Y4RCV5ENF","created_at":"2026-07-05T01:54:09Z"},{"alias_kind":"pith_short_8","alias_value":"UBOOVY2Y","created_at":"2026-07-05T01:54:09Z"}],"graph_snapshots":[{"event_id":"sha256:cbdbecd03f2864ca355e6fa10310ac0746dbfb7a20be369ab4840e4813e48f07","target":"graph","created_at":"2026-07-05T01:54:09Z","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/2011.12214/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate a high capacity IF-over-fiber mobile fronthaul solution for multi-user massive MIMO 5G RAN. Using this scheme, a record aggregated radio bandwidth of 25.6 GHz was transmitted on a single optical wavelength over 40 km without fiber chromatic dispersion compensation","authors_text":"Roman Dischler, Sivarama Venkatesan, Son T. Le, Stefan Wesemann","cross_cats":["cs.IT","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-11-18T16:00:03Z","title":"A Joint Wireless-Optical Front-haul Solution for Multi-user Massive MIMO 5G RAN"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.12214","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":"sha256:7c5ce4db0e3a8f2421497c8c69f120e4b602d49faab72ccdc2262852314f1327","target":"record","created_at":"2026-07-05T01:54:09Z","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":"1c4eefab70949a44fe806fa960bf578dbc2296127c7625275d1c94fe6b3e2aca","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-11-18T16:00:03Z","title_canon_sha256":"a761f07d06b4119ee73b435a7ad716377954e4c5c3f2b43a21dff4b124389f83"},"schema_version":"1.0","source":{"id":"2011.12214","kind":"arxiv","version":1}},"canonical_sha256":"a05ceae358e4455e91a534772e93b36a0911bc54dd158d7bb7d531777240481d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a05ceae358e4455e91a534772e93b36a0911bc54dd158d7bb7d531777240481d","first_computed_at":"2026-07-05T01:54:09.060470Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:54:09.060470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LyONxmu/gXtuPZjD9AyGCmg/meYo5FzzUQ6IwoltqKVTbaA8YGZiWcT1/4TpTL1RAnUFsnZFgy8RcvW/LWP/DA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:54:09.060868Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.12214","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7c5ce4db0e3a8f2421497c8c69f120e4b602d49faab72ccdc2262852314f1327","sha256:cbdbecd03f2864ca355e6fa10310ac0746dbfb7a20be369ab4840e4813e48f07"],"state_sha256":"b84ac7fb5ba2e75691fd0b22ba5f73cb2ba847c295ae023dae9f03e751d20887"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0nPOR8C0C0lC2duJxB3VkLqL7X6QXzsadI0yhnT8020WjE2ZeDbRo/5xa/3ZW9Ikq2ISqDtk33mUB3fPs5q9BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T03:57:50.624390Z","bundle_sha256":"33398b039b8034f231a54b17b54891212bf16107e6dda457dc45b68026ee1204"}}