{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:L5GF2G2ZRPNEVOMT2B3DU2IUDG","short_pith_number":"pith:L5GF2G2Z","canonical_record":{"source":{"id":"1007.3066","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-07-19T06:39:32Z","cross_cats_sorted":[],"title_canon_sha256":"7daf2f36538fd692136c99c8cbbff9ecf6f5df6aaff3f36718365c35a652a3e7","abstract_canon_sha256":"118c9698904dbabf6f195f9ab11a79aee0fe7379d2f8f10c4bff1f724dae9766"},"schema_version":"1.0"},"canonical_sha256":"5f4c5d1b598bda4ab993d0763a691419b66e0c6727eff8c4d44e1117f9853e06","source":{"kind":"arxiv","id":"1007.3066","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.3066","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"arxiv_version","alias_value":"1007.3066v1","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.3066","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"pith_short_12","alias_value":"L5GF2G2ZRPNE","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"L5GF2G2ZRPNEVOMT","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"L5GF2G2Z","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:L5GF2G2ZRPNEVOMT2B3DU2IUDG","target":"record","payload":{"canonical_record":{"source":{"id":"1007.3066","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-07-19T06:39:32Z","cross_cats_sorted":[],"title_canon_sha256":"7daf2f36538fd692136c99c8cbbff9ecf6f5df6aaff3f36718365c35a652a3e7","abstract_canon_sha256":"118c9698904dbabf6f195f9ab11a79aee0fe7379d2f8f10c4bff1f724dae9766"},"schema_version":"1.0"},"canonical_sha256":"5f4c5d1b598bda4ab993d0763a691419b66e0c6727eff8c4d44e1117f9853e06","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:38:15.320291Z","signature_b64":"EZbfivH6sWHpEUOa0RJXcoZ8nqaU3CNtHUgIyVA6460SfSxcNP0zDfPc3ye0idP9jW/iSwNjyvG2OPtBPkQCBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5f4c5d1b598bda4ab993d0763a691419b66e0c6727eff8c4d44e1117f9853e06","last_reissued_at":"2026-05-18T04:38:15.319634Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:38:15.319634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1007.3066","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":"2026-05-18T04:38:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"erGiqCiUaF/j1JaOxdesyUVVJJyVJwO0TGDyy2H3JXHk3OJzF0jOGNh6hjOwcrfXI5E6EvW5HrNDh3vkVFJRDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T19:45:28.915676Z"},"content_sha256":"359fb550c1c0495df65bfd1a31196bf158f4f6ff5d1caec96a64ec102b40b6e9","schema_version":"1.0","event_id":"sha256:359fb550c1c0495df65bfd1a31196bf158f4f6ff5d1caec96a64ec102b40b6e9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:L5GF2G2ZRPNEVOMT2B3DU2IUDG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Security of \"Counterfactual Quantum Cryptography\"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Guang-Can Guo, Hong-Wei Li, Zheng-Fu Han, Zhen-Qiang Yin","submitted_at":"2010-07-19T06:39:32Z","abstract_excerpt":"Recently, a \"counterfactual\" quantum key distribution scheme was proposed by Tae-Gon Noh [1]. In this scheme, two legitimate distant peers may share secret keys even when the information carriers are not traveled in the quantum channel. We find that this protocol is equivalent to an entanglement distillation protocol (EDP). According to this equivalence, a strict security proof and the asymptotic key bit rate are both obtained when perfect single photon source is applied and Trojan-horse attack can be detected. We also find that the security of this scheme is deeply related with not only the b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.3066","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":"2026-05-18T04:38:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MRD8OD89O9MYbfFtVsQZIpDgKAOkHvIBolgUS2qJtlchgeZR1Ki71wTUYw8jWYCUM1wZUL51AvxXNpQUgGn/BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T19:45:28.916015Z"},"content_sha256":"2d735bb5d4b4324e6777d61da66f7d20450937fb35ecca3fdfbb4d1b6dca5307","schema_version":"1.0","event_id":"sha256:2d735bb5d4b4324e6777d61da66f7d20450937fb35ecca3fdfbb4d1b6dca5307"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L5GF2G2ZRPNEVOMT2B3DU2IUDG/bundle.json","state_url":"https://pith.science/pith/L5GF2G2ZRPNEVOMT2B3DU2IUDG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L5GF2G2ZRPNEVOMT2B3DU2IUDG/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":"2026-07-04T19:45:28Z","links":{"resolver":"https://pith.science/pith/L5GF2G2ZRPNEVOMT2B3DU2IUDG","bundle":"https://pith.science/pith/L5GF2G2ZRPNEVOMT2B3DU2IUDG/bundle.json","state":"https://pith.science/pith/L5GF2G2ZRPNEVOMT2B3DU2IUDG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L5GF2G2ZRPNEVOMT2B3DU2IUDG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:L5GF2G2ZRPNEVOMT2B3DU2IUDG","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":"118c9698904dbabf6f195f9ab11a79aee0fe7379d2f8f10c4bff1f724dae9766","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-07-19T06:39:32Z","title_canon_sha256":"7daf2f36538fd692136c99c8cbbff9ecf6f5df6aaff3f36718365c35a652a3e7"},"schema_version":"1.0","source":{"id":"1007.3066","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.3066","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"arxiv_version","alias_value":"1007.3066v1","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.3066","created_at":"2026-05-18T04:38:15Z"},{"alias_kind":"pith_short_12","alias_value":"L5GF2G2ZRPNE","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"L5GF2G2ZRPNEVOMT","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"L5GF2G2Z","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:2d735bb5d4b4324e6777d61da66f7d20450937fb35ecca3fdfbb4d1b6dca5307","target":"graph","created_at":"2026-05-18T04:38:15Z","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":"Recently, a \"counterfactual\" quantum key distribution scheme was proposed by Tae-Gon Noh [1]. In this scheme, two legitimate distant peers may share secret keys even when the information carriers are not traveled in the quantum channel. We find that this protocol is equivalent to an entanglement distillation protocol (EDP). According to this equivalence, a strict security proof and the asymptotic key bit rate are both obtained when perfect single photon source is applied and Trojan-horse attack can be detected. We also find that the security of this scheme is deeply related with not only the b","authors_text":"Guang-Can Guo, Hong-Wei Li, Zheng-Fu Han, Zhen-Qiang Yin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-07-19T06:39:32Z","title":"Security of \"Counterfactual Quantum Cryptography\""},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.3066","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":"sha256:359fb550c1c0495df65bfd1a31196bf158f4f6ff5d1caec96a64ec102b40b6e9","target":"record","created_at":"2026-05-18T04:38:15Z","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":"118c9698904dbabf6f195f9ab11a79aee0fe7379d2f8f10c4bff1f724dae9766","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-07-19T06:39:32Z","title_canon_sha256":"7daf2f36538fd692136c99c8cbbff9ecf6f5df6aaff3f36718365c35a652a3e7"},"schema_version":"1.0","source":{"id":"1007.3066","kind":"arxiv","version":1}},"canonical_sha256":"5f4c5d1b598bda4ab993d0763a691419b66e0c6727eff8c4d44e1117f9853e06","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5f4c5d1b598bda4ab993d0763a691419b66e0c6727eff8c4d44e1117f9853e06","first_computed_at":"2026-05-18T04:38:15.319634Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:38:15.319634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EZbfivH6sWHpEUOa0RJXcoZ8nqaU3CNtHUgIyVA6460SfSxcNP0zDfPc3ye0idP9jW/iSwNjyvG2OPtBPkQCBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:38:15.320291Z","signed_message":"canonical_sha256_bytes"},"source_id":"1007.3066","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:359fb550c1c0495df65bfd1a31196bf158f4f6ff5d1caec96a64ec102b40b6e9","sha256:2d735bb5d4b4324e6777d61da66f7d20450937fb35ecca3fdfbb4d1b6dca5307"],"state_sha256":"8b0394aead364c6ec0ac2023fa380144b8b1258b70895dca5dad744d160c008f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yVS1hz9Bx1QIFoV2ktYMLTb3riCyZbvyIINzun9cLlY6jrY/PRxYle8PRkoOAz0W9xo7ETIYfPM6i5FYj20KBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T19:45:28.917935Z","bundle_sha256":"c5cab0004144d0f2bb7d4a85d08748c41a3945b7b2bc1af425a488d4b45eab1e"}}