{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:VQ2CBTFH4ZPXVERFLH2PDBU5ZV","short_pith_number":"pith:VQ2CBTFH","canonical_record":{"source":{"id":"1705.04570","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-05-12T13:58:15Z","cross_cats_sorted":[],"title_canon_sha256":"f361556c3f66728b713ab80e24bb21feb0014617e28431bf0cc48e7432f71a4d","abstract_canon_sha256":"049f4ca50710526ad8091571c9f324607bdb806ac77e8b2304f228b0080caba4"},"schema_version":"1.0"},"canonical_sha256":"ac3420cca7e65f7a922559f4f1869dcd46452d72b148bcb99f16a64051e595a8","source":{"kind":"arxiv","id":"1705.04570","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.04570","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"arxiv_version","alias_value":"1705.04570v1","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.04570","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"pith_short_12","alias_value":"VQ2CBTFH4ZPX","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VQ2CBTFH4ZPXVERF","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VQ2CBTFH","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:VQ2CBTFH4ZPXVERFLH2PDBU5ZV","target":"record","payload":{"canonical_record":{"source":{"id":"1705.04570","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-05-12T13:58:15Z","cross_cats_sorted":[],"title_canon_sha256":"f361556c3f66728b713ab80e24bb21feb0014617e28431bf0cc48e7432f71a4d","abstract_canon_sha256":"049f4ca50710526ad8091571c9f324607bdb806ac77e8b2304f228b0080caba4"},"schema_version":"1.0"},"canonical_sha256":"ac3420cca7e65f7a922559f4f1869dcd46452d72b148bcb99f16a64051e595a8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:37.776698Z","signature_b64":"enlJHDwk1tHy7gL9ZTuBztdCBFykX2AaMov3BRYcMNOqx1Ss7zC+aTHMqNLhQHVsh317s+9UHCzmQir5H8hpBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ac3420cca7e65f7a922559f4f1869dcd46452d72b148bcb99f16a64051e595a8","last_reissued_at":"2026-05-18T00:44:37.776085Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:37.776085Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.04570","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":"2026-05-18T00:44:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OpDTjpS0O7BLL+ehu+BIWxzxcvdwgE3py3RKUf5nxuyZsHxz3ffUfnqiPysI73NAL5gtXwNEjMrpAQ6jEb5FAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T17:05:21.351468Z"},"content_sha256":"d77a6d36b606ca34b709ca7202e287cf1e8586ed869da291f5b95432b43ae3dc","schema_version":"1.0","event_id":"sha256:d77a6d36b606ca34b709ca7202e287cf1e8586ed869da291f5b95432b43ae3dc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:VQ2CBTFH4ZPXVERFLH2PDBU5ZV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Device Independent Quantum Private Query with Finite Number of Entangled Qubits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"and Goutam Paul, Arpita Maitra, Bappaditya Ghosh, Jyotirmoy Basak","submitted_at":"2017-05-12T13:58:15Z","abstract_excerpt":"In a recent work by Maitra et al. (Phys. Rev. A, 2017), it was shown that the existing Quantum Private Query (QPQ) protocols fail to maintain the database security if the entangled states shared between Alice and Bob are not of a certain form. So it is necessary to certify the states a priori. In this regard, the local CHSH test was proposed. However, the proposed scheme works perfectly for the asymptotic case when we have infinite number of qubits. In this brief report, we upgrade the protocol for finite number of qubits and connect the sample size to the success probability of CHSH test. We "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.04570","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":"2026-05-18T00:44:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zgAkeDuc+qLFicQwr4p6zATP4VmbmM1wiLth2iBPZPNnTW8xSPM4y2VANBGRR2G0BtfI5ZWtDwKFWn/5LYVpBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T17:05:21.351923Z"},"content_sha256":"406df357374ecd5b54d00a813d8236b2262a76781a2b6799ad7e95d5fb4d9309","schema_version":"1.0","event_id":"sha256:406df357374ecd5b54d00a813d8236b2262a76781a2b6799ad7e95d5fb4d9309"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VQ2CBTFH4ZPXVERFLH2PDBU5ZV/bundle.json","state_url":"https://pith.science/pith/VQ2CBTFH4ZPXVERFLH2PDBU5ZV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VQ2CBTFH4ZPXVERFLH2PDBU5ZV/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":"2026-06-23T17:05:21Z","links":{"resolver":"https://pith.science/pith/VQ2CBTFH4ZPXVERFLH2PDBU5ZV","bundle":"https://pith.science/pith/VQ2CBTFH4ZPXVERFLH2PDBU5ZV/bundle.json","state":"https://pith.science/pith/VQ2CBTFH4ZPXVERFLH2PDBU5ZV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VQ2CBTFH4ZPXVERFLH2PDBU5ZV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VQ2CBTFH4ZPXVERFLH2PDBU5ZV","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":"049f4ca50710526ad8091571c9f324607bdb806ac77e8b2304f228b0080caba4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-05-12T13:58:15Z","title_canon_sha256":"f361556c3f66728b713ab80e24bb21feb0014617e28431bf0cc48e7432f71a4d"},"schema_version":"1.0","source":{"id":"1705.04570","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.04570","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"arxiv_version","alias_value":"1705.04570v1","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.04570","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"pith_short_12","alias_value":"VQ2CBTFH4ZPX","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VQ2CBTFH4ZPXVERF","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VQ2CBTFH","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:406df357374ecd5b54d00a813d8236b2262a76781a2b6799ad7e95d5fb4d9309","target":"graph","created_at":"2026-05-18T00:44:37Z","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 a recent work by Maitra et al. (Phys. Rev. A, 2017), it was shown that the existing Quantum Private Query (QPQ) protocols fail to maintain the database security if the entangled states shared between Alice and Bob are not of a certain form. So it is necessary to certify the states a priori. In this regard, the local CHSH test was proposed. However, the proposed scheme works perfectly for the asymptotic case when we have infinite number of qubits. In this brief report, we upgrade the protocol for finite number of qubits and connect the sample size to the success probability of CHSH test. We ","authors_text":"and Goutam Paul, Arpita Maitra, Bappaditya Ghosh, Jyotirmoy Basak","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-05-12T13:58:15Z","title":"Device Independent Quantum Private Query with Finite Number of Entangled Qubits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.04570","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:d77a6d36b606ca34b709ca7202e287cf1e8586ed869da291f5b95432b43ae3dc","target":"record","created_at":"2026-05-18T00:44:37Z","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":"049f4ca50710526ad8091571c9f324607bdb806ac77e8b2304f228b0080caba4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-05-12T13:58:15Z","title_canon_sha256":"f361556c3f66728b713ab80e24bb21feb0014617e28431bf0cc48e7432f71a4d"},"schema_version":"1.0","source":{"id":"1705.04570","kind":"arxiv","version":1}},"canonical_sha256":"ac3420cca7e65f7a922559f4f1869dcd46452d72b148bcb99f16a64051e595a8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ac3420cca7e65f7a922559f4f1869dcd46452d72b148bcb99f16a64051e595a8","first_computed_at":"2026-05-18T00:44:37.776085Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:44:37.776085Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"enlJHDwk1tHy7gL9ZTuBztdCBFykX2AaMov3BRYcMNOqx1Ss7zC+aTHMqNLhQHVsh317s+9UHCzmQir5H8hpBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:44:37.776698Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.04570","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d77a6d36b606ca34b709ca7202e287cf1e8586ed869da291f5b95432b43ae3dc","sha256:406df357374ecd5b54d00a813d8236b2262a76781a2b6799ad7e95d5fb4d9309"],"state_sha256":"642849cb61d0b54cb0bbacd34ec15a71cfb41abd9d3f80f7d7fbf99d9d9222d3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/1N9I08DkVr7K7ekhu1lmc4vZs1ae6jWUijfiHT2cya0LZyNCc33vTelpgvqGGaVzv7XtPmOR72s1ses8UedDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T17:05:21.354097Z","bundle_sha256":"ac0776c8f748538ff5ef19f4b15517a982923defe619435dcdbd3a5078712b9d"}}