{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:QYSROTFJNWLFSEFL7ELQV6I2D5","short_pith_number":"pith:QYSROTFJ","canonical_record":{"source":{"id":"1404.4120","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cs.IT","submitted_at":"2014-04-16T01:01:27Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"dbac8be9a5aa43c98c22d97fbe1a7e654f6a3c3f886c1d9ab2a11a2090ad0cba","abstract_canon_sha256":"ecb3d977ed1ab7128ae99956afac603204ba70e2df4bd595c05a639f3efdf956"},"schema_version":"1.0"},"canonical_sha256":"8625174ca96d965910abf9170af91a1f52706802dd99de7a17a77197c01261c8","source":{"kind":"arxiv","id":"1404.4120","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.4120","created_at":"2026-05-18T01:43:29Z"},{"alias_kind":"arxiv_version","alias_value":"1404.4120v2","created_at":"2026-05-18T01:43:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.4120","created_at":"2026-05-18T01:43:29Z"},{"alias_kind":"pith_short_12","alias_value":"QYSROTFJNWLF","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QYSROTFJNWLFSEFL","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QYSROTFJ","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:QYSROTFJNWLFSEFL7ELQV6I2D5","target":"record","payload":{"canonical_record":{"source":{"id":"1404.4120","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cs.IT","submitted_at":"2014-04-16T01:01:27Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"dbac8be9a5aa43c98c22d97fbe1a7e654f6a3c3f886c1d9ab2a11a2090ad0cba","abstract_canon_sha256":"ecb3d977ed1ab7128ae99956afac603204ba70e2df4bd595c05a639f3efdf956"},"schema_version":"1.0"},"canonical_sha256":"8625174ca96d965910abf9170af91a1f52706802dd99de7a17a77197c01261c8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:43:29.565512Z","signature_b64":"waCFmBu5Pr2JcfTa90B2ZTHbx4Vz22yVa22Buwto8lT4/txT/AqVFiK2FfXozKBPDfkhvt6FYW2zOqhfh9l8Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8625174ca96d965910abf9170af91a1f52706802dd99de7a17a77197c01261c8","last_reissued_at":"2026-05-18T01:43:29.564847Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:43:29.564847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.4120","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:43:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7LmxSpwp072iz38fZ11ipTp1snju/wRxain6M2ryyetcqAHM8/6Bb9j+aR+f8fpDxyRwOUTIZGYkNDbSQCvxDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:16:03.558667Z"},"content_sha256":"3866e7f9d7f623a592aac05bd8ed0a8dfe7ae9f851d034a15c170dceb282ee4d","schema_version":"1.0","event_id":"sha256:3866e7f9d7f623a592aac05bd8ed0a8dfe7ae9f851d034a15c170dceb282ee4d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:QYSROTFJNWLFSEFL7ELQV6I2D5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Harvest-Then-Cooperate: Wireless-Powered Cooperative Communications","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Bartolomeu F. Uchoa-Filhoand, Branka Vucetic, He Chen, Joao Luiz Rebelatto, Yonghui Li","submitted_at":"2014-04-16T01:01:27Z","abstract_excerpt":"In this paper, we consider a wireless-powered cooperative communication network consisting of one hybrid access-point (AP), one source, and one relay. In contrast to conventional cooperative networks, the source and relay in the considered network have no embedded energy supply. They need to rely on the energy harvested from the signals broadcasted by the AP for their cooperative information transmission. Based on this three-node reference model, we propose a harvest-then-cooperate (HTC) protocol, in which the source and relay harvest energy from the AP in the downlink and work cooperatively i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.4120","kind":"arxiv","version":2},"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":"2026-05-18T01:43:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+x4NsvENBOJ4ywF9AfMPQ5/xrpss24MpO/+PaWRblpomXMijGtk6nrIWmqWr30tllCwIE/pBEbZBIc/YUbroBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:16:03.559085Z"},"content_sha256":"7bc51868c580c5e64c7aa71b42bb6bc5c9721deca7b209bfd389852b7c3a45b6","schema_version":"1.0","event_id":"sha256:7bc51868c580c5e64c7aa71b42bb6bc5c9721deca7b209bfd389852b7c3a45b6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QYSROTFJNWLFSEFL7ELQV6I2D5/bundle.json","state_url":"https://pith.science/pith/QYSROTFJNWLFSEFL7ELQV6I2D5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QYSROTFJNWLFSEFL7ELQV6I2D5/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":"2026-05-26T22:16:03Z","links":{"resolver":"https://pith.science/pith/QYSROTFJNWLFSEFL7ELQV6I2D5","bundle":"https://pith.science/pith/QYSROTFJNWLFSEFL7ELQV6I2D5/bundle.json","state":"https://pith.science/pith/QYSROTFJNWLFSEFL7ELQV6I2D5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QYSROTFJNWLFSEFL7ELQV6I2D5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:QYSROTFJNWLFSEFL7ELQV6I2D5","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":"ecb3d977ed1ab7128ae99956afac603204ba70e2df4bd595c05a639f3efdf956","cross_cats_sorted":["math.IT"],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cs.IT","submitted_at":"2014-04-16T01:01:27Z","title_canon_sha256":"dbac8be9a5aa43c98c22d97fbe1a7e654f6a3c3f886c1d9ab2a11a2090ad0cba"},"schema_version":"1.0","source":{"id":"1404.4120","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.4120","created_at":"2026-05-18T01:43:29Z"},{"alias_kind":"arxiv_version","alias_value":"1404.4120v2","created_at":"2026-05-18T01:43:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.4120","created_at":"2026-05-18T01:43:29Z"},{"alias_kind":"pith_short_12","alias_value":"QYSROTFJNWLF","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QYSROTFJNWLFSEFL","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QYSROTFJ","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:7bc51868c580c5e64c7aa71b42bb6bc5c9721deca7b209bfd389852b7c3a45b6","target":"graph","created_at":"2026-05-18T01:43:29Z","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":"In this paper, we consider a wireless-powered cooperative communication network consisting of one hybrid access-point (AP), one source, and one relay. In contrast to conventional cooperative networks, the source and relay in the considered network have no embedded energy supply. They need to rely on the energy harvested from the signals broadcasted by the AP for their cooperative information transmission. Based on this three-node reference model, we propose a harvest-then-cooperate (HTC) protocol, in which the source and relay harvest energy from the AP in the downlink and work cooperatively i","authors_text":"Bartolomeu F. Uchoa-Filhoand, Branka Vucetic, He Chen, Joao Luiz Rebelatto, Yonghui Li","cross_cats":["math.IT"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cs.IT","submitted_at":"2014-04-16T01:01:27Z","title":"Harvest-Then-Cooperate: Wireless-Powered Cooperative Communications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.4120","kind":"arxiv","version":2},"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":"sha256:3866e7f9d7f623a592aac05bd8ed0a8dfe7ae9f851d034a15c170dceb282ee4d","target":"record","created_at":"2026-05-18T01:43:29Z","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":"ecb3d977ed1ab7128ae99956afac603204ba70e2df4bd595c05a639f3efdf956","cross_cats_sorted":["math.IT"],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cs.IT","submitted_at":"2014-04-16T01:01:27Z","title_canon_sha256":"dbac8be9a5aa43c98c22d97fbe1a7e654f6a3c3f886c1d9ab2a11a2090ad0cba"},"schema_version":"1.0","source":{"id":"1404.4120","kind":"arxiv","version":2}},"canonical_sha256":"8625174ca96d965910abf9170af91a1f52706802dd99de7a17a77197c01261c8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8625174ca96d965910abf9170af91a1f52706802dd99de7a17a77197c01261c8","first_computed_at":"2026-05-18T01:43:29.564847Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:43:29.564847Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"waCFmBu5Pr2JcfTa90B2ZTHbx4Vz22yVa22Buwto8lT4/txT/AqVFiK2FfXozKBPDfkhvt6FYW2zOqhfh9l8Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:43:29.565512Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.4120","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3866e7f9d7f623a592aac05bd8ed0a8dfe7ae9f851d034a15c170dceb282ee4d","sha256:7bc51868c580c5e64c7aa71b42bb6bc5c9721deca7b209bfd389852b7c3a45b6"],"state_sha256":"91c94eb90e07eba38fe1a9fcfb95561f9a9329a9708b63850cd797b299ce6e49"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s6wayhVv9I8eYgSoHGAFFQO9ZaVOKLlb+kvVUZkeKhDSGDi7C1CRO87DRx1/aj8+wACJqJ41phOMkwrIuZPxDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T22:16:03.562102Z","bundle_sha256":"14ffe0eafe30dab53d214080c0489f169322074c20c39b0e861e6f55528b0e04"}}