{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:6G2ZB5ENUQU3NBZA6VY4CZSUP3","short_pith_number":"pith:6G2ZB5EN","canonical_record":{"source":{"id":"1901.01156","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-01-04T14:49:20Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"88ab1603c2769b12104796cc994f2eadfcf12c38b6c496f22994fba40b71cf14","abstract_canon_sha256":"badc7295b362fdacee155e640c558d858b994dd0b894212575a06fd7ebe2e4db"},"schema_version":"1.0"},"canonical_sha256":"f1b590f48da429b68720f571c166547efedf3601c96cd98b68a2fa0aadcf37fb","source":{"kind":"arxiv","id":"1901.01156","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.01156","created_at":"2026-07-05T01:23:53Z"},{"alias_kind":"arxiv_version","alias_value":"1901.01156v3","created_at":"2026-07-05T01:23:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.01156","created_at":"2026-07-05T01:23:53Z"},{"alias_kind":"pith_short_12","alias_value":"6G2ZB5ENUQU3","created_at":"2026-07-05T01:23:53Z"},{"alias_kind":"pith_short_16","alias_value":"6G2ZB5ENUQU3NBZA","created_at":"2026-07-05T01:23:53Z"},{"alias_kind":"pith_short_8","alias_value":"6G2ZB5EN","created_at":"2026-07-05T01:23:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:6G2ZB5ENUQU3NBZA6VY4CZSUP3","target":"record","payload":{"canonical_record":{"source":{"id":"1901.01156","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-01-04T14:49:20Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"88ab1603c2769b12104796cc994f2eadfcf12c38b6c496f22994fba40b71cf14","abstract_canon_sha256":"badc7295b362fdacee155e640c558d858b994dd0b894212575a06fd7ebe2e4db"},"schema_version":"1.0"},"canonical_sha256":"f1b590f48da429b68720f571c166547efedf3601c96cd98b68a2fa0aadcf37fb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:23:53.417664Z","signature_b64":"ye5TuefLLRYOXeiBmIFoGuBTFJj6f1y3ocHW1//heecfMIoVZPX8AL2TmCdeqCKA4TUoefS46cRFMUzdZf/KBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f1b590f48da429b68720f571c166547efedf3601c96cd98b68a2fa0aadcf37fb","last_reissued_at":"2026-07-05T01:23:53.417127Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:23:53.417127Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.01156","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:23:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NKAYCmFjMIjRY+5EvhI2NjFiHUwW2NWbbDDXoV0581pe+JzkWwnIgkhW0xQx5tysJR9jSzsrkN4Wlr5pWMXPCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T17:28:13.835464Z"},"content_sha256":"02799646d862ddd63df9a8b0ffd39c11e9516dac7a0ce91631c4b50d5f062372","schema_version":"1.0","event_id":"sha256:02799646d862ddd63df9a8b0ffd39c11e9516dac7a0ce91631c4b50d5f062372"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:6G2ZB5ENUQU3NBZA6VY4CZSUP3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Signal and System Design for Wireless Power Transfer : Prototype, Experiment and Validation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Bruno Clerckx, Junghoon Kim, Paul D. Mitcheson","submitted_at":"2019-01-04T14:49:20Z","abstract_excerpt":"A new line of research on communications and signals design for Wireless Power Transfer (WPT) has recently emerged in the communication literature. Promising signal strategies to maximize the power transfer efficiency of WPT rely on (energy) beamforming, waveform, modulation and transmit diversity, and a combination thereof. To a great extent, the study of those strategies has so far been limited to theoretical performance analysis. In this paper, we study the real over-the-air performance of all the aforementioned signal strategies for WPT. To that end, we have designed, prototyped and experi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.01156","kind":"arxiv","version":3},"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/1901.01156/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":"2026-07-05T01:23:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gc0yCwKPHcgdQJRTutbF+ILmGSI5marYYS5x+66+au4S48CTM6rrhmGXV1nJKLIQVhFEHzFffUqVzH/RlFk7AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T17:28:13.835981Z"},"content_sha256":"ad66a8988dc099cb211fd7d065e358418cd2e5fa712f017a69210906e89e08c6","schema_version":"1.0","event_id":"sha256:ad66a8988dc099cb211fd7d065e358418cd2e5fa712f017a69210906e89e08c6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6G2ZB5ENUQU3NBZA6VY4CZSUP3/bundle.json","state_url":"https://pith.science/pith/6G2ZB5ENUQU3NBZA6VY4CZSUP3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6G2ZB5ENUQU3NBZA6VY4CZSUP3/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":"2026-08-21T17:28:13Z","links":{"resolver":"https://pith.science/pith/6G2ZB5ENUQU3NBZA6VY4CZSUP3","bundle":"https://pith.science/pith/6G2ZB5ENUQU3NBZA6VY4CZSUP3/bundle.json","state":"https://pith.science/pith/6G2ZB5ENUQU3NBZA6VY4CZSUP3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6G2ZB5ENUQU3NBZA6VY4CZSUP3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:6G2ZB5ENUQU3NBZA6VY4CZSUP3","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":"badc7295b362fdacee155e640c558d858b994dd0b894212575a06fd7ebe2e4db","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-01-04T14:49:20Z","title_canon_sha256":"88ab1603c2769b12104796cc994f2eadfcf12c38b6c496f22994fba40b71cf14"},"schema_version":"1.0","source":{"id":"1901.01156","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.01156","created_at":"2026-07-05T01:23:53Z"},{"alias_kind":"arxiv_version","alias_value":"1901.01156v3","created_at":"2026-07-05T01:23:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.01156","created_at":"2026-07-05T01:23:53Z"},{"alias_kind":"pith_short_12","alias_value":"6G2ZB5ENUQU3","created_at":"2026-07-05T01:23:53Z"},{"alias_kind":"pith_short_16","alias_value":"6G2ZB5ENUQU3NBZA","created_at":"2026-07-05T01:23:53Z"},{"alias_kind":"pith_short_8","alias_value":"6G2ZB5EN","created_at":"2026-07-05T01:23:53Z"}],"graph_snapshots":[{"event_id":"sha256:ad66a8988dc099cb211fd7d065e358418cd2e5fa712f017a69210906e89e08c6","target":"graph","created_at":"2026-07-05T01:23:53Z","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/1901.01156/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A new line of research on communications and signals design for Wireless Power Transfer (WPT) has recently emerged in the communication literature. Promising signal strategies to maximize the power transfer efficiency of WPT rely on (energy) beamforming, waveform, modulation and transmit diversity, and a combination thereof. To a great extent, the study of those strategies has so far been limited to theoretical performance analysis. In this paper, we study the real over-the-air performance of all the aforementioned signal strategies for WPT. To that end, we have designed, prototyped and experi","authors_text":"Bruno Clerckx, Junghoon Kim, Paul D. Mitcheson","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-01-04T14:49:20Z","title":"Signal and System Design for Wireless Power Transfer : Prototype, Experiment and Validation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.01156","kind":"arxiv","version":3},"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":"sha256:02799646d862ddd63df9a8b0ffd39c11e9516dac7a0ce91631c4b50d5f062372","target":"record","created_at":"2026-07-05T01:23:53Z","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":"badc7295b362fdacee155e640c558d858b994dd0b894212575a06fd7ebe2e4db","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-01-04T14:49:20Z","title_canon_sha256":"88ab1603c2769b12104796cc994f2eadfcf12c38b6c496f22994fba40b71cf14"},"schema_version":"1.0","source":{"id":"1901.01156","kind":"arxiv","version":3}},"canonical_sha256":"f1b590f48da429b68720f571c166547efedf3601c96cd98b68a2fa0aadcf37fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f1b590f48da429b68720f571c166547efedf3601c96cd98b68a2fa0aadcf37fb","first_computed_at":"2026-07-05T01:23:53.417127Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:23:53.417127Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ye5TuefLLRYOXeiBmIFoGuBTFJj6f1y3ocHW1//heecfMIoVZPX8AL2TmCdeqCKA4TUoefS46cRFMUzdZf/KBg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:23:53.417664Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.01156","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:02799646d862ddd63df9a8b0ffd39c11e9516dac7a0ce91631c4b50d5f062372","sha256:ad66a8988dc099cb211fd7d065e358418cd2e5fa712f017a69210906e89e08c6"],"state_sha256":"13278c515d3b277440c01c5793763db936bd696e764aa36c8f476e6621907abc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w8x0zwSYmaRb7+cTZSOVxgoIWg4vxOUlUYcpngIG8Ld4ABhBBy8tA1tAWZKpFPrdYLqAl9H2FOzmTZwH7V0QAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T17:28:13.841469Z","bundle_sha256":"f54002449187164e16002a674d66dbc98a8142a2eadbd4928bfdad6335d1b8dd"}}