{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:7EJ57X5N4YFTHNOAQEMJW5VZR4","short_pith_number":"pith:7EJ57X5N","canonical_record":{"source":{"id":"1906.05361","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.ET","submitted_at":"2019-06-12T19:56:25Z","cross_cats_sorted":[],"title_canon_sha256":"02e5021ab52055539006d5dd7b43caff12a2b53d3ed7d9566e5d1d862f6b72cf","abstract_canon_sha256":"d71cfb12bd050eb32a3d289a62a806737511278815064c5d57f8eaa59d7efe25"},"schema_version":"1.0"},"canonical_sha256":"f913dfdfade60b33b5c081189b76b98f0b04115f23d502f21195947f066b04b9","source":{"kind":"arxiv","id":"1906.05361","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.05361","created_at":"2026-05-17T23:43:25Z"},{"alias_kind":"arxiv_version","alias_value":"1906.05361v1","created_at":"2026-05-17T23:43:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.05361","created_at":"2026-05-17T23:43:25Z"},{"alias_kind":"pith_short_12","alias_value":"7EJ57X5N4YFT","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"7EJ57X5N4YFTHNOA","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"7EJ57X5N","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:7EJ57X5N4YFTHNOAQEMJW5VZR4","target":"record","payload":{"canonical_record":{"source":{"id":"1906.05361","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.ET","submitted_at":"2019-06-12T19:56:25Z","cross_cats_sorted":[],"title_canon_sha256":"02e5021ab52055539006d5dd7b43caff12a2b53d3ed7d9566e5d1d862f6b72cf","abstract_canon_sha256":"d71cfb12bd050eb32a3d289a62a806737511278815064c5d57f8eaa59d7efe25"},"schema_version":"1.0"},"canonical_sha256":"f913dfdfade60b33b5c081189b76b98f0b04115f23d502f21195947f066b04b9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:25.485622Z","signature_b64":"Rer8M351MLvN584TLGyFmngN6CB55cf6zA+D64WEMgQJ+WIjgBCsLoxblyFVKKNRDwh3YCeUiu5L33koHLDPBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f913dfdfade60b33b5c081189b76b98f0b04115f23d502f21195947f066b04b9","last_reissued_at":"2026-05-17T23:43:25.485155Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:25.485155Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.05361","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":"2026-05-17T23:43:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dUA+de/1deOI9A4DroqF3H15J02W4fngV0zW2SnbxRVTWtfSutPhzzrHbtXH4Fx033zOZPGAgduqjDSVJe/2Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:02:34.768005Z"},"content_sha256":"8e461b67e10e89ef6dc36ba4247bc9e90667d0622c0462f1d5ffc2d56e327641","schema_version":"1.0","event_id":"sha256:8e461b67e10e89ef6dc36ba4247bc9e90667d0622c0462f1d5ffc2d56e327641"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:7EJ57X5N4YFTHNOAQEMJW5VZR4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Opportunistic Beamforming in Wireless Network-on-Chip","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.ET","authors_text":"A. Cabellos-Aparicio, A. Franques, A. Marruedo, E. Alarc\\'on, H. Taghvaee, J. Torrellas, J. Zhou, S. Abadal","submitted_at":"2019-06-12T19:56:25Z","abstract_excerpt":"Wireless Network-on-Chip (WNoC) has emerged as a promising alternative to conventional interconnect fabrics at the chip scale. Since WNoCs may imply the close integration of antennas, one of the salient challenges in this scenario is the management of coupling and interferences. This paper, instead of combating coupling, aims to take advantage of close integration to create arrays within a WNoC. The proposed solution is opportunistic as it attempts to exploit the existing infrastructure to build a simple reconfigurable beamforming scheme. Full-wave simulations show that, despite the effects of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.05361","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":"2026-05-17T23:43:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cLCYpKr3Aey+zIohQ17VbPZ+MBk/ls4zkFAfQZWwFCI09hTlsTzcJ7vrs8TYjCNiLAequIhZ0xwqPhAMH/IiBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:02:34.768363Z"},"content_sha256":"9004209a33746aa262fad7394ce975f11314d1a6b263ed8e099679d59a53b79b","schema_version":"1.0","event_id":"sha256:9004209a33746aa262fad7394ce975f11314d1a6b263ed8e099679d59a53b79b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7EJ57X5N4YFTHNOAQEMJW5VZR4/bundle.json","state_url":"https://pith.science/pith/7EJ57X5N4YFTHNOAQEMJW5VZR4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7EJ57X5N4YFTHNOAQEMJW5VZR4/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":"2026-05-28T13:02:34Z","links":{"resolver":"https://pith.science/pith/7EJ57X5N4YFTHNOAQEMJW5VZR4","bundle":"https://pith.science/pith/7EJ57X5N4YFTHNOAQEMJW5VZR4/bundle.json","state":"https://pith.science/pith/7EJ57X5N4YFTHNOAQEMJW5VZR4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7EJ57X5N4YFTHNOAQEMJW5VZR4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:7EJ57X5N4YFTHNOAQEMJW5VZR4","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":"d71cfb12bd050eb32a3d289a62a806737511278815064c5d57f8eaa59d7efe25","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.ET","submitted_at":"2019-06-12T19:56:25Z","title_canon_sha256":"02e5021ab52055539006d5dd7b43caff12a2b53d3ed7d9566e5d1d862f6b72cf"},"schema_version":"1.0","source":{"id":"1906.05361","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.05361","created_at":"2026-05-17T23:43:25Z"},{"alias_kind":"arxiv_version","alias_value":"1906.05361v1","created_at":"2026-05-17T23:43:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.05361","created_at":"2026-05-17T23:43:25Z"},{"alias_kind":"pith_short_12","alias_value":"7EJ57X5N4YFT","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"7EJ57X5N4YFTHNOA","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"7EJ57X5N","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:9004209a33746aa262fad7394ce975f11314d1a6b263ed8e099679d59a53b79b","target":"graph","created_at":"2026-05-17T23:43:25Z","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":"Wireless Network-on-Chip (WNoC) has emerged as a promising alternative to conventional interconnect fabrics at the chip scale. Since WNoCs may imply the close integration of antennas, one of the salient challenges in this scenario is the management of coupling and interferences. This paper, instead of combating coupling, aims to take advantage of close integration to create arrays within a WNoC. The proposed solution is opportunistic as it attempts to exploit the existing infrastructure to build a simple reconfigurable beamforming scheme. Full-wave simulations show that, despite the effects of","authors_text":"A. Cabellos-Aparicio, A. Franques, A. Marruedo, E. Alarc\\'on, H. Taghvaee, J. Torrellas, J. Zhou, S. Abadal","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.ET","submitted_at":"2019-06-12T19:56:25Z","title":"Opportunistic Beamforming in Wireless Network-on-Chip"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.05361","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":"sha256:8e461b67e10e89ef6dc36ba4247bc9e90667d0622c0462f1d5ffc2d56e327641","target":"record","created_at":"2026-05-17T23:43:25Z","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":"d71cfb12bd050eb32a3d289a62a806737511278815064c5d57f8eaa59d7efe25","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.ET","submitted_at":"2019-06-12T19:56:25Z","title_canon_sha256":"02e5021ab52055539006d5dd7b43caff12a2b53d3ed7d9566e5d1d862f6b72cf"},"schema_version":"1.0","source":{"id":"1906.05361","kind":"arxiv","version":1}},"canonical_sha256":"f913dfdfade60b33b5c081189b76b98f0b04115f23d502f21195947f066b04b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f913dfdfade60b33b5c081189b76b98f0b04115f23d502f21195947f066b04b9","first_computed_at":"2026-05-17T23:43:25.485155Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:25.485155Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Rer8M351MLvN584TLGyFmngN6CB55cf6zA+D64WEMgQJ+WIjgBCsLoxblyFVKKNRDwh3YCeUiu5L33koHLDPBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:25.485622Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.05361","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8e461b67e10e89ef6dc36ba4247bc9e90667d0622c0462f1d5ffc2d56e327641","sha256:9004209a33746aa262fad7394ce975f11314d1a6b263ed8e099679d59a53b79b"],"state_sha256":"452a50d892ec4aac0be42bf7c352f7200662cce2108605f32020eb1759756b8a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/U+YUuyZ/tlimOFFwQaBGcwJ2hRSjosgz9kekZ1a0jy+mhFM9qvzHJ5sBDR5oiFSoUit2fwRro6/0Kcu3kBJBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T13:02:34.770499Z","bundle_sha256":"3433a2debe17b1628966797bb0df27a3af485957a5b5e3830b4d2f999883912b"}}