{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:WITIMYJLUNMDS2NLS4YQYCON4N","short_pith_number":"pith:WITIMYJL","canonical_record":{"source":{"id":"1307.7551","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-29T12:12:28Z","cross_cats_sorted":[],"title_canon_sha256":"eff5148d8b54e358b6cbba354bc1e8afea047f7362aba35c782971cf114460b6","abstract_canon_sha256":"fe31cddceb04f38c4c9a00a2bf593739fc5f8779b29f967ce176485b7c5d17d6"},"schema_version":"1.0"},"canonical_sha256":"b22686612ba3583969ab97310c09cde344d9ce3cb5b358350dbc5653e35d176b","source":{"kind":"arxiv","id":"1307.7551","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.7551","created_at":"2026-05-18T03:06:04Z"},{"alias_kind":"arxiv_version","alias_value":"1307.7551v2","created_at":"2026-05-18T03:06:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.7551","created_at":"2026-05-18T03:06:04Z"},{"alias_kind":"pith_short_12","alias_value":"WITIMYJLUNMD","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"WITIMYJLUNMDS2NL","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"WITIMYJL","created_at":"2026-05-18T12:28:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:WITIMYJLUNMDS2NLS4YQYCON4N","target":"record","payload":{"canonical_record":{"source":{"id":"1307.7551","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-29T12:12:28Z","cross_cats_sorted":[],"title_canon_sha256":"eff5148d8b54e358b6cbba354bc1e8afea047f7362aba35c782971cf114460b6","abstract_canon_sha256":"fe31cddceb04f38c4c9a00a2bf593739fc5f8779b29f967ce176485b7c5d17d6"},"schema_version":"1.0"},"canonical_sha256":"b22686612ba3583969ab97310c09cde344d9ce3cb5b358350dbc5653e35d176b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:06:04.747973Z","signature_b64":"HSL8rjJ+c240+PDDr2ZpXSpGtQ7EiimpDJUMychh3idU31hJTMGwEUTVqO6dn5Odw44LNNg6pSJkdAYWb6E3Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b22686612ba3583969ab97310c09cde344d9ce3cb5b358350dbc5653e35d176b","last_reissued_at":"2026-05-18T03:06:04.747398Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:06:04.747398Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.7551","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:06:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pVXJDeIcyoSougT+YMOZWxcE0pYZKjvYqxsJzNH+OQx3ACYreNREBoWq7qWPpwUNndDgpYwX/45UVHQncz5IBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T05:07:52.015803Z"},"content_sha256":"20de9a896e4ae1479a09330d9511713f9a9702172b0ed8c2e5ebce2d4f500dcc","schema_version":"1.0","event_id":"sha256:20de9a896e4ae1479a09330d9511713f9a9702172b0ed8c2e5ebce2d4f500dcc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:WITIMYJLUNMDS2NLS4YQYCON4N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Semi-counterfactual Cryptography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Akshata Shenoy H., R. Srikanth, T. Srinivas","submitted_at":"2013-07-29T12:12:28Z","abstract_excerpt":"In counterfactual quantum key distribution (QKD), two remote parties can securely share random polarization-encoded bits through the blocking rather than the transmission of particles. We propose a semi-counterfactual QKD, i.e., one where the secret bit is shared, and also encoded, based on the blocking or non-blocking of a particle. The scheme is thus semi-counterfactual and not based on polarization encoding. As with other counterfactual schemes and the Goldenberg-Vaidman protocol, but unlike BB84, the encoding states are orthogonal and security arises ultimately from single-particle non-loc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.7551","kind":"arxiv","version":2},"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":"2026-05-18T03:06:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J4A/0iLf0YllDECM5lAK3ouKQ18vAnj7Ee3EFDEuk5EKkuWQKEWUO0f/wASn8D0K0DFJAPe2WYzIc6jqBXHtDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T05:07:52.016475Z"},"content_sha256":"30a412ddc2a56852edf0af605f16c61f0ac115bdb05f29981330ca2836650294","schema_version":"1.0","event_id":"sha256:30a412ddc2a56852edf0af605f16c61f0ac115bdb05f29981330ca2836650294"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WITIMYJLUNMDS2NLS4YQYCON4N/bundle.json","state_url":"https://pith.science/pith/WITIMYJLUNMDS2NLS4YQYCON4N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WITIMYJLUNMDS2NLS4YQYCON4N/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":"2026-05-31T05:07:52Z","links":{"resolver":"https://pith.science/pith/WITIMYJLUNMDS2NLS4YQYCON4N","bundle":"https://pith.science/pith/WITIMYJLUNMDS2NLS4YQYCON4N/bundle.json","state":"https://pith.science/pith/WITIMYJLUNMDS2NLS4YQYCON4N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WITIMYJLUNMDS2NLS4YQYCON4N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:WITIMYJLUNMDS2NLS4YQYCON4N","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":"fe31cddceb04f38c4c9a00a2bf593739fc5f8779b29f967ce176485b7c5d17d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-29T12:12:28Z","title_canon_sha256":"eff5148d8b54e358b6cbba354bc1e8afea047f7362aba35c782971cf114460b6"},"schema_version":"1.0","source":{"id":"1307.7551","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.7551","created_at":"2026-05-18T03:06:04Z"},{"alias_kind":"arxiv_version","alias_value":"1307.7551v2","created_at":"2026-05-18T03:06:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.7551","created_at":"2026-05-18T03:06:04Z"},{"alias_kind":"pith_short_12","alias_value":"WITIMYJLUNMD","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"WITIMYJLUNMDS2NL","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"WITIMYJL","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:30a412ddc2a56852edf0af605f16c61f0ac115bdb05f29981330ca2836650294","target":"graph","created_at":"2026-05-18T03:06:04Z","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":"In counterfactual quantum key distribution (QKD), two remote parties can securely share random polarization-encoded bits through the blocking rather than the transmission of particles. We propose a semi-counterfactual QKD, i.e., one where the secret bit is shared, and also encoded, based on the blocking or non-blocking of a particle. The scheme is thus semi-counterfactual and not based on polarization encoding. As with other counterfactual schemes and the Goldenberg-Vaidman protocol, but unlike BB84, the encoding states are orthogonal and security arises ultimately from single-particle non-loc","authors_text":"Akshata Shenoy H., R. Srikanth, T. Srinivas","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-29T12:12:28Z","title":"Semi-counterfactual Cryptography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.7551","kind":"arxiv","version":2},"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":"sha256:20de9a896e4ae1479a09330d9511713f9a9702172b0ed8c2e5ebce2d4f500dcc","target":"record","created_at":"2026-05-18T03:06:04Z","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":"fe31cddceb04f38c4c9a00a2bf593739fc5f8779b29f967ce176485b7c5d17d6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-07-29T12:12:28Z","title_canon_sha256":"eff5148d8b54e358b6cbba354bc1e8afea047f7362aba35c782971cf114460b6"},"schema_version":"1.0","source":{"id":"1307.7551","kind":"arxiv","version":2}},"canonical_sha256":"b22686612ba3583969ab97310c09cde344d9ce3cb5b358350dbc5653e35d176b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b22686612ba3583969ab97310c09cde344d9ce3cb5b358350dbc5653e35d176b","first_computed_at":"2026-05-18T03:06:04.747398Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:06:04.747398Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HSL8rjJ+c240+PDDr2ZpXSpGtQ7EiimpDJUMychh3idU31hJTMGwEUTVqO6dn5Odw44LNNg6pSJkdAYWb6E3Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:06:04.747973Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.7551","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:20de9a896e4ae1479a09330d9511713f9a9702172b0ed8c2e5ebce2d4f500dcc","sha256:30a412ddc2a56852edf0af605f16c61f0ac115bdb05f29981330ca2836650294"],"state_sha256":"28649a488fcbb43d77fca9e18be9b7679138c3525ecc9e89e13622f467115140"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XUsmmKs1fgjEPhfP0a0hFWF4QYiqQelN32ssHpaL8rLZBmxuIzubUM69Ss16r5a/fRQIRmulyNjkIoXatLutBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T05:07:52.019729Z","bundle_sha256":"3a38979b66a26904f06b40a90f5206a90a4509fd2946cede2bb4239ee52a92b9"}}