{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:ZY2GDO57WTWB42TZJ6T5ICRXEP","short_pith_number":"pith:ZY2GDO57","schema_version":"1.0","canonical_sha256":"ce3461bbbfb4ec1e6a794fa7d40a3723fd66b264f5ce6e8602a612f29c4900b1","source":{"kind":"arxiv","id":"1903.07845","version":1},"attestation_state":"computed","paper":{"title":"Satellite constellations for trusted node QKD networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alexander Ling, Hans Kuiper, Robert Bedington, Sergio Loarte, Tom Vergoossen","submitted_at":"2019-03-19T05:37:59Z","abstract_excerpt":"Quantum key distribution from satellites becomes particularly valuable when it can be used on a large network and on-demand to provide a symmetric encryption key to any two nodes. A constellation model is described which enables QKD-derived encryption keys to be established between any two ground stations with low latency. This is achieved through the use of low earth orbit, trusted-node QKD satellites which create a buffer of keys with the ground stations they pass over, and geostationary relay satellites to transfer secure combinations of the keys to the ground stations. Regional and global "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1903.07845","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-03-19T05:37:59Z","cross_cats_sorted":[],"title_canon_sha256":"89538d93b7d4b6a779157036bdf2c8742ca129b8d34fc03b7573f0d455f51b32","abstract_canon_sha256":"08e08344030f444ac2e6e1263548c281f15315a22d1dafc2fd2299e4d7954389"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:03:58.531245Z","signature_b64":"ds8OriL9ClpnYv0j582VlSGcCQl5y/7xiR1bdhiLkEk4Wkwim3uOjiBp9VDcgeylHssrdEKhhWFdHINmKPzMBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce3461bbbfb4ec1e6a794fa7d40a3723fd66b264f5ce6e8602a612f29c4900b1","last_reissued_at":"2026-07-05T01:03:58.530641Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:03:58.530641Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Satellite constellations for trusted node QKD networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alexander Ling, Hans Kuiper, Robert Bedington, Sergio Loarte, Tom Vergoossen","submitted_at":"2019-03-19T05:37:59Z","abstract_excerpt":"Quantum key distribution from satellites becomes particularly valuable when it can be used on a large network and on-demand to provide a symmetric encryption key to any two nodes. A constellation model is described which enables QKD-derived encryption keys to be established between any two ground stations with low latency. This is achieved through the use of low earth orbit, trusted-node QKD satellites which create a buffer of keys with the ground stations they pass over, and geostationary relay satellites to transfer secure combinations of the keys to the ground stations. Regional and global "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.07845","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/1903.07845/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1903.07845","created_at":"2026-07-05T01:03:58.530705+00:00"},{"alias_kind":"arxiv_version","alias_value":"1903.07845v1","created_at":"2026-07-05T01:03:58.530705+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.07845","created_at":"2026-07-05T01:03:58.530705+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZY2GDO57WTWB","created_at":"2026-07-05T01:03:58.530705+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZY2GDO57WTWB42TZ","created_at":"2026-07-05T01:03:58.530705+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZY2GDO57","created_at":"2026-07-05T01:03:58.530705+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2608.12659","citing_title":"Topological State-Aware Simulation Framework for Inter-Satellite Twin-Field QKD Networks","ref_index":4,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZY2GDO57WTWB42TZJ6T5ICRXEP","json":"https://pith.science/pith/ZY2GDO57WTWB42TZJ6T5ICRXEP.json","graph_json":"https://pith.science/api/pith-number/ZY2GDO57WTWB42TZJ6T5ICRXEP/graph.json","events_json":"https://pith.science/api/pith-number/ZY2GDO57WTWB42TZJ6T5ICRXEP/events.json","paper":"https://pith.science/paper/ZY2GDO57"},"agent_actions":{"view_html":"https://pith.science/pith/ZY2GDO57WTWB42TZJ6T5ICRXEP","download_json":"https://pith.science/pith/ZY2GDO57WTWB42TZJ6T5ICRXEP.json","view_paper":"https://pith.science/paper/ZY2GDO57","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1903.07845&json=true","fetch_graph":"https://pith.science/api/pith-number/ZY2GDO57WTWB42TZJ6T5ICRXEP/graph.json","fetch_events":"https://pith.science/api/pith-number/ZY2GDO57WTWB42TZJ6T5ICRXEP/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZY2GDO57WTWB42TZJ6T5ICRXEP/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZY2GDO57WTWB42TZJ6T5ICRXEP/action/storage_attestation","attest_author":"https://pith.science/pith/ZY2GDO57WTWB42TZJ6T5ICRXEP/action/author_attestation","sign_citation":"https://pith.science/pith/ZY2GDO57WTWB42TZJ6T5ICRXEP/action/citation_signature","submit_replication":"https://pith.science/pith/ZY2GDO57WTWB42TZJ6T5ICRXEP/action/replication_record"}},"created_at":"2026-07-05T01:03:58.530705+00:00","updated_at":"2026-07-05T01:03:58.530705+00:00"}