{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:HGH2OEOIKR25GOBF6OMJ7DQBII","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":"bf7a176e69fb3c64269b03aa6b00e66e0079d299823f67a18d216d2faf083876","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-05-24T10:47:50Z","title_canon_sha256":"612cb09b3efcdf88e0ad172368a38e09637f13429187667d72b1d9fad7759fa1"},"schema_version":"1.0","source":{"id":"1505.06423","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.06423","created_at":"2026-05-18T02:03:47Z"},{"alias_kind":"arxiv_version","alias_value":"1505.06423v1","created_at":"2026-05-18T02:03:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.06423","created_at":"2026-05-18T02:03:47Z"},{"alias_kind":"pith_short_12","alias_value":"HGH2OEOIKR25","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"HGH2OEOIKR25GOBF","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"HGH2OEOI","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:b828e95df85bb563465f623ce6aa8943dd702661f2c10a3c2928343cadd7dc2b","target":"graph","created_at":"2026-05-18T02:03:47Z","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":"Although quantum key distribution (QKD) comes from the development of quantum theory, the implementation of a practical QKD system does involve a lot of classical process, such as key reconciliation and privacy amplification, which is called post-processing. Post-processing has been a crucial element to high speed QKD systems, even the bottleneck of it because of its relatively high time consumption. Low density parity check (LDPC) is now becoming a promising approach of overcoming the bottleneck due to its good performance in processing throughput. In this article we propose and simulate an e","authors_text":"Chuan Wang, Chun-Mei Zhang, Mo Li, Wei Chen, Zheng-Fu Han, Zhen-Qiang Yin","cross_cats":["cs.IT","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-05-24T10:47:50Z","title":"Simple rate-adaptive LDPC coding for quantum key distribution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.06423","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:e0960fb63bc1e8eda444685114accb7e0784cbee4eefea04bda52049db46f2b5","target":"record","created_at":"2026-05-18T02:03:47Z","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":"bf7a176e69fb3c64269b03aa6b00e66e0079d299823f67a18d216d2faf083876","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-05-24T10:47:50Z","title_canon_sha256":"612cb09b3efcdf88e0ad172368a38e09637f13429187667d72b1d9fad7759fa1"},"schema_version":"1.0","source":{"id":"1505.06423","kind":"arxiv","version":1}},"canonical_sha256":"398fa711c85475d33825f3989f8e0142254ceee83d844f29c53983d966c11531","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"398fa711c85475d33825f3989f8e0142254ceee83d844f29c53983d966c11531","first_computed_at":"2026-05-18T02:03:47.300558Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:47.300558Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"npkLEC+fUGjS3LGtYizCWeDpsKB5LPZt1FsTh+EFdrdopGfyOu6Bpi6nPgitRSzao7HzmVtJhMCWAO+gBBHQAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:47.301282Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.06423","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e0960fb63bc1e8eda444685114accb7e0784cbee4eefea04bda52049db46f2b5","sha256:b828e95df85bb563465f623ce6aa8943dd702661f2c10a3c2928343cadd7dc2b"],"state_sha256":"b3c3be9c280d44483d15b66729fd6d630433fdddc5d8e5b2565c3f92959648ee"}