{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:JLZPQUV7BKPVMYUR5WEYKYZO2L","short_pith_number":"pith:JLZPQUV7","canonical_record":{"source":{"id":"2006.12863","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-06-23T09:54:02Z","cross_cats_sorted":[],"title_canon_sha256":"a2d3c19d822d89d7447875023cc960d51ac44f15c4f9224e16403fe74fd5f385","abstract_canon_sha256":"009034edc77f8be2026446a3f9c1b6c4a3cc1a5eb092a6fa6acce973f4380c9e"},"schema_version":"1.0"},"canonical_sha256":"4af2f852bf0a9f566291ed8985632ed2d57d22b62112561aad264023b4c28990","source":{"kind":"arxiv","id":"2006.12863","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.12863","created_at":"2026-07-05T06:27:36Z"},{"alias_kind":"arxiv_version","alias_value":"2006.12863v1","created_at":"2026-07-05T06:27:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.12863","created_at":"2026-07-05T06:27:36Z"},{"alias_kind":"pith_short_12","alias_value":"JLZPQUV7BKPV","created_at":"2026-07-05T06:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"JLZPQUV7BKPVMYUR","created_at":"2026-07-05T06:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"JLZPQUV7","created_at":"2026-07-05T06:27:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:JLZPQUV7BKPVMYUR5WEYKYZO2L","target":"record","payload":{"canonical_record":{"source":{"id":"2006.12863","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-06-23T09:54:02Z","cross_cats_sorted":[],"title_canon_sha256":"a2d3c19d822d89d7447875023cc960d51ac44f15c4f9224e16403fe74fd5f385","abstract_canon_sha256":"009034edc77f8be2026446a3f9c1b6c4a3cc1a5eb092a6fa6acce973f4380c9e"},"schema_version":"1.0"},"canonical_sha256":"4af2f852bf0a9f566291ed8985632ed2d57d22b62112561aad264023b4c28990","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:27:36.468333Z","signature_b64":"O0rHo9v205MWytutPbsPzKKPcNQjni4XLV3sFUt72eeT/DUMvwk0uzX1UYcySsJbfRFVicVVp5AS/SbltqcoDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4af2f852bf0a9f566291ed8985632ed2d57d22b62112561aad264023b4c28990","last_reissued_at":"2026-07-05T06:27:36.467910Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:27:36.467910Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.12863","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":"2026-07-05T06:27:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Oqo/izxkyEjD3f3sXeuJe8MOGM/hcAuPQ+RIv8vLThcTCB38lb82c/r0+SqCcTy1O5Vfag5SNg7LJGmHNk1JCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:05:32.421990Z"},"content_sha256":"87086cfd4444860126c460e53a7e12a2ebd3460a034aae7b720e6e60f475dbf3","schema_version":"1.0","event_id":"sha256:87086cfd4444860126c460e53a7e12a2ebd3460a034aae7b720e6e60f475dbf3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:JLZPQUV7BKPVMYUR5WEYKYZO2L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental quantum key distribution secure against malicious devices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Cheng-Zhi Peng, Feihu Xu, Hao Min, Hao Tan, Jian-Wei Pan, Kejin Wei, Marcos Curty, Sheng-Kai Liao, Victor Zapatero, Wei Li, Wei-Yue Liu, Xiao Jiang","submitted_at":"2020-06-23T09:54:02Z","abstract_excerpt":"The fabrication of quantum key distribution (QKD) systems typically involves several parties, thus providing Eve with multiple opportunities to meddle with the devices. As a consequence, conventional hardware and/or software hacking attacks pose natural threats to the security of practical QKD. Fortunately, if the number of corrupted devices is limited, the security can be restored by using redundant apparatuses. Here, we report on the demonstration of a secure QKD setup with optical devices and classical post-processing units possibly controlled by an eavesdropper. We implement a 1.25 GHz chi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.12863","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.12863/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":"2026-07-05T06:27:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QgN12yRzuEoMkPXvMPKBKJ225O/em92sM6scBiC9MRJl0fhJ8SBYhMiqs0q7p4zY4apwcvaPPYKMp2mwNIcHCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T07:05:32.422383Z"},"content_sha256":"bc843b08ad154ae7991817ca46c33f3dc11f295bc0bfd66a5bbff10f06d14c9c","schema_version":"1.0","event_id":"sha256:bc843b08ad154ae7991817ca46c33f3dc11f295bc0bfd66a5bbff10f06d14c9c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JLZPQUV7BKPVMYUR5WEYKYZO2L/bundle.json","state_url":"https://pith.science/pith/JLZPQUV7BKPVMYUR5WEYKYZO2L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JLZPQUV7BKPVMYUR5WEYKYZO2L/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":"2026-07-07T07:05:32Z","links":{"resolver":"https://pith.science/pith/JLZPQUV7BKPVMYUR5WEYKYZO2L","bundle":"https://pith.science/pith/JLZPQUV7BKPVMYUR5WEYKYZO2L/bundle.json","state":"https://pith.science/pith/JLZPQUV7BKPVMYUR5WEYKYZO2L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JLZPQUV7BKPVMYUR5WEYKYZO2L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:JLZPQUV7BKPVMYUR5WEYKYZO2L","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":"009034edc77f8be2026446a3f9c1b6c4a3cc1a5eb092a6fa6acce973f4380c9e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-06-23T09:54:02Z","title_canon_sha256":"a2d3c19d822d89d7447875023cc960d51ac44f15c4f9224e16403fe74fd5f385"},"schema_version":"1.0","source":{"id":"2006.12863","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.12863","created_at":"2026-07-05T06:27:36Z"},{"alias_kind":"arxiv_version","alias_value":"2006.12863v1","created_at":"2026-07-05T06:27:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.12863","created_at":"2026-07-05T06:27:36Z"},{"alias_kind":"pith_short_12","alias_value":"JLZPQUV7BKPV","created_at":"2026-07-05T06:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"JLZPQUV7BKPVMYUR","created_at":"2026-07-05T06:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"JLZPQUV7","created_at":"2026-07-05T06:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:bc843b08ad154ae7991817ca46c33f3dc11f295bc0bfd66a5bbff10f06d14c9c","target":"graph","created_at":"2026-07-05T06:27:36Z","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/2006.12863/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The fabrication of quantum key distribution (QKD) systems typically involves several parties, thus providing Eve with multiple opportunities to meddle with the devices. As a consequence, conventional hardware and/or software hacking attacks pose natural threats to the security of practical QKD. Fortunately, if the number of corrupted devices is limited, the security can be restored by using redundant apparatuses. Here, we report on the demonstration of a secure QKD setup with optical devices and classical post-processing units possibly controlled by an eavesdropper. We implement a 1.25 GHz chi","authors_text":"Cheng-Zhi Peng, Feihu Xu, Hao Min, Hao Tan, Jian-Wei Pan, Kejin Wei, Marcos Curty, Sheng-Kai Liao, Victor Zapatero, Wei Li, Wei-Yue Liu, Xiao Jiang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-06-23T09:54:02Z","title":"Experimental quantum key distribution secure against malicious devices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.12863","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":"sha256:87086cfd4444860126c460e53a7e12a2ebd3460a034aae7b720e6e60f475dbf3","target":"record","created_at":"2026-07-05T06:27:36Z","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":"009034edc77f8be2026446a3f9c1b6c4a3cc1a5eb092a6fa6acce973f4380c9e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-06-23T09:54:02Z","title_canon_sha256":"a2d3c19d822d89d7447875023cc960d51ac44f15c4f9224e16403fe74fd5f385"},"schema_version":"1.0","source":{"id":"2006.12863","kind":"arxiv","version":1}},"canonical_sha256":"4af2f852bf0a9f566291ed8985632ed2d57d22b62112561aad264023b4c28990","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4af2f852bf0a9f566291ed8985632ed2d57d22b62112561aad264023b4c28990","first_computed_at":"2026-07-05T06:27:36.467910Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:27:36.467910Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"O0rHo9v205MWytutPbsPzKKPcNQjni4XLV3sFUt72eeT/DUMvwk0uzX1UYcySsJbfRFVicVVp5AS/SbltqcoDg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:27:36.468333Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.12863","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:87086cfd4444860126c460e53a7e12a2ebd3460a034aae7b720e6e60f475dbf3","sha256:bc843b08ad154ae7991817ca46c33f3dc11f295bc0bfd66a5bbff10f06d14c9c"],"state_sha256":"59818388babce17eb88534d4b8102643cdd90fffd53b609286b8b5e7d8da083d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t3qDX+B3Rb8GhIPM2ezjcZzvBQQJbyjej5fPIWxllVLRVwLCmZvILWLQC5ySb7+pPNTinx8cXAjJIU4trnlRBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T07:05:32.424253Z","bundle_sha256":"f6339149ab347edc220d6a1624868412ff0424fd050ea63af3dc9ed26b7bfdf8"}}