{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:XAOM4XVDBLROO7IQ5T6XO47V4X","short_pith_number":"pith:XAOM4XVD","canonical_record":{"source":{"id":"2506.07831","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T14:54:12Z","cross_cats_sorted":[],"title_canon_sha256":"dda8b8318abdaa4f19325b1d881b9a19be206592b2008f568e010e8bff42eda6","abstract_canon_sha256":"742a0f71b0b8f9aa755be95673777fefa9d5146eb7dc4ac4c811c12e22145046"},"schema_version":"1.0"},"canonical_sha256":"b81cce5ea30ae2e77d10ecfd7773f5e5e630dcca99b68582d99a51916b4f0fa4","source":{"kind":"arxiv","id":"2506.07831","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.07831","created_at":"2026-07-05T11:18:34Z"},{"alias_kind":"arxiv_version","alias_value":"2506.07831v1","created_at":"2026-07-05T11:18:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.07831","created_at":"2026-07-05T11:18:34Z"},{"alias_kind":"pith_short_12","alias_value":"XAOM4XVDBLRO","created_at":"2026-07-05T11:18:34Z"},{"alias_kind":"pith_short_16","alias_value":"XAOM4XVDBLROO7IQ","created_at":"2026-07-05T11:18:34Z"},{"alias_kind":"pith_short_8","alias_value":"XAOM4XVD","created_at":"2026-07-05T11:18:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:XAOM4XVDBLROO7IQ5T6XO47V4X","target":"record","payload":{"canonical_record":{"source":{"id":"2506.07831","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T14:54:12Z","cross_cats_sorted":[],"title_canon_sha256":"dda8b8318abdaa4f19325b1d881b9a19be206592b2008f568e010e8bff42eda6","abstract_canon_sha256":"742a0f71b0b8f9aa755be95673777fefa9d5146eb7dc4ac4c811c12e22145046"},"schema_version":"1.0"},"canonical_sha256":"b81cce5ea30ae2e77d10ecfd7773f5e5e630dcca99b68582d99a51916b4f0fa4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:18:34.179102Z","signature_b64":"EslEacVeZaM685Tx40fookFluIx84zE6WEe8AjlNBquws6JHVkLATBDjCBTTN40VEcIjt4/OT9cJ2H2uwMHpAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b81cce5ea30ae2e77d10ecfd7773f5e5e630dcca99b68582d99a51916b4f0fa4","last_reissued_at":"2026-07-05T11:18:34.178666Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:18:34.178666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.07831","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":"2026-07-05T11:18:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2ih7y+cje//3HNmPvlN3PF0vHfwuo9HlQkB48OFd4VdVIDZwyAn+FSXt9UwLQBJBlr5oeFiDYimc+GiWmMoCCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T04:41:16.023073Z"},"content_sha256":"ce82083ace667af25372d8128f35df8af7808a673b8bc0348e4b73ab561c98d2","schema_version":"1.0","event_id":"sha256:ce82083ace667af25372d8128f35df8af7808a673b8bc0348e4b73ab561c98d2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:XAOM4XVDBLROO7IQ5T6XO47V4X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Clock Synchronization for Drone-Based Entanglement Quantum Key Distribution","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Bangying Tang, Bo Liu, Bo Xu, Chunqing Wu, Huicun Yu, Hui Han, Jiahao Li, JianJi Yi, Jinquan Huang, Shihai Sun, Wanrong Yu, Xiangwei Zhu","submitted_at":"2025-06-09T14:54:12Z","abstract_excerpt":"Drone-based entanglement distribution provides full spatiotemporal coverage for quantum networks, enabling quantum key distribution (QKD) in dynamic environments. The security of QKD fundamentally depends on high-fidelity quantum state measurements, for which high-precision clock synchronization is indispensable, as timing jitter is inversely correlated with quantum state fidelity. However, drone-based clock synchronization is constrained by SWaP (Size, Weight, and Power) limitations and dynamic mobility effects. Here, we propose a synchronization protocol for drone-based entanglement distribu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.07831","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/2506.07831/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":"2026-07-05T11:18:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"txBNqFK4K4TSkes7sgevNXXqJ417DGCzmIqJhpH/AYuIUxFYxCs2DkVX2n9Ztsk6bJSMz7bjcmeuegLDjBt+Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T04:41:16.023808Z"},"content_sha256":"cc2b186fc542460cf2b78bbfddcb88831fe4f65e3d681ffcd0fb0b5f81584eed","schema_version":"1.0","event_id":"sha256:cc2b186fc542460cf2b78bbfddcb88831fe4f65e3d681ffcd0fb0b5f81584eed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XAOM4XVDBLROO7IQ5T6XO47V4X/bundle.json","state_url":"https://pith.science/pith/XAOM4XVDBLROO7IQ5T6XO47V4X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XAOM4XVDBLROO7IQ5T6XO47V4X/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":"2026-08-19T04:41:16Z","links":{"resolver":"https://pith.science/pith/XAOM4XVDBLROO7IQ5T6XO47V4X","bundle":"https://pith.science/pith/XAOM4XVDBLROO7IQ5T6XO47V4X/bundle.json","state":"https://pith.science/pith/XAOM4XVDBLROO7IQ5T6XO47V4X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XAOM4XVDBLROO7IQ5T6XO47V4X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:XAOM4XVDBLROO7IQ5T6XO47V4X","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":"742a0f71b0b8f9aa755be95673777fefa9d5146eb7dc4ac4c811c12e22145046","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T14:54:12Z","title_canon_sha256":"dda8b8318abdaa4f19325b1d881b9a19be206592b2008f568e010e8bff42eda6"},"schema_version":"1.0","source":{"id":"2506.07831","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.07831","created_at":"2026-07-05T11:18:34Z"},{"alias_kind":"arxiv_version","alias_value":"2506.07831v1","created_at":"2026-07-05T11:18:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.07831","created_at":"2026-07-05T11:18:34Z"},{"alias_kind":"pith_short_12","alias_value":"XAOM4XVDBLRO","created_at":"2026-07-05T11:18:34Z"},{"alias_kind":"pith_short_16","alias_value":"XAOM4XVDBLROO7IQ","created_at":"2026-07-05T11:18:34Z"},{"alias_kind":"pith_short_8","alias_value":"XAOM4XVD","created_at":"2026-07-05T11:18:34Z"}],"graph_snapshots":[{"event_id":"sha256:cc2b186fc542460cf2b78bbfddcb88831fe4f65e3d681ffcd0fb0b5f81584eed","target":"graph","created_at":"2026-07-05T11:18:34Z","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/2506.07831/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Drone-based entanglement distribution provides full spatiotemporal coverage for quantum networks, enabling quantum key distribution (QKD) in dynamic environments. The security of QKD fundamentally depends on high-fidelity quantum state measurements, for which high-precision clock synchronization is indispensable, as timing jitter is inversely correlated with quantum state fidelity. However, drone-based clock synchronization is constrained by SWaP (Size, Weight, and Power) limitations and dynamic mobility effects. Here, we propose a synchronization protocol for drone-based entanglement distribu","authors_text":"Bangying Tang, Bo Liu, Bo Xu, Chunqing Wu, Huicun Yu, Hui Han, Jiahao Li, JianJi Yi, Jinquan Huang, Shihai Sun, Wanrong Yu, Xiangwei Zhu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T14:54:12Z","title":"Clock Synchronization for Drone-Based Entanglement Quantum Key Distribution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.07831","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:ce82083ace667af25372d8128f35df8af7808a673b8bc0348e4b73ab561c98d2","target":"record","created_at":"2026-07-05T11:18:34Z","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":"742a0f71b0b8f9aa755be95673777fefa9d5146eb7dc4ac4c811c12e22145046","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T14:54:12Z","title_canon_sha256":"dda8b8318abdaa4f19325b1d881b9a19be206592b2008f568e010e8bff42eda6"},"schema_version":"1.0","source":{"id":"2506.07831","kind":"arxiv","version":1}},"canonical_sha256":"b81cce5ea30ae2e77d10ecfd7773f5e5e630dcca99b68582d99a51916b4f0fa4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b81cce5ea30ae2e77d10ecfd7773f5e5e630dcca99b68582d99a51916b4f0fa4","first_computed_at":"2026-07-05T11:18:34.178666Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:18:34.178666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EslEacVeZaM685Tx40fookFluIx84zE6WEe8AjlNBquws6JHVkLATBDjCBTTN40VEcIjt4/OT9cJ2H2uwMHpAA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:18:34.179102Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.07831","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce82083ace667af25372d8128f35df8af7808a673b8bc0348e4b73ab561c98d2","sha256:cc2b186fc542460cf2b78bbfddcb88831fe4f65e3d681ffcd0fb0b5f81584eed"],"state_sha256":"38cd39115e524b48e56ac0e735c7c55b268338aa6b0c0e30c9dbd0d215069068"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ON81H5ablRVnbdhixsedgWKhmmnHHoqoCtWq88dMqTK/XiN0LF+9dovmP7ygCJXC9xLZ/TWeKewXxotWSOBxBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T04:41:16.029395Z","bundle_sha256":"f26d5ff83e3247ee2b83a559aedfc28298b6248695919df09b8484c7fc21c46b"}}