{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:OL2CNMISSA6M7XCIEFHS3DPUKM","short_pith_number":"pith:OL2CNMIS","canonical_record":{"source":{"id":"2107.03726","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2021-07-08T10:11:27Z","cross_cats_sorted":[],"title_canon_sha256":"83d5743fa14495efda2b2d5d20757787421963527fd4fc5052b13624bddb95fa","abstract_canon_sha256":"9328b48156a1a85ade47565f8c919fb9a2972089126cf6745bd39f91717338e9"},"schema_version":"1.0"},"canonical_sha256":"72f426b112903ccfdc48214f2d8df4531292504ed64c2c4ada4dd128dfe4d688","source":{"kind":"arxiv","id":"2107.03726","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.03726","created_at":"2026-07-05T02:56:18Z"},{"alias_kind":"arxiv_version","alias_value":"2107.03726v1","created_at":"2026-07-05T02:56:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.03726","created_at":"2026-07-05T02:56:18Z"},{"alias_kind":"pith_short_12","alias_value":"OL2CNMISSA6M","created_at":"2026-07-05T02:56:18Z"},{"alias_kind":"pith_short_16","alias_value":"OL2CNMISSA6M7XCI","created_at":"2026-07-05T02:56:18Z"},{"alias_kind":"pith_short_8","alias_value":"OL2CNMIS","created_at":"2026-07-05T02:56:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:OL2CNMISSA6M7XCIEFHS3DPUKM","target":"record","payload":{"canonical_record":{"source":{"id":"2107.03726","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2021-07-08T10:11:27Z","cross_cats_sorted":[],"title_canon_sha256":"83d5743fa14495efda2b2d5d20757787421963527fd4fc5052b13624bddb95fa","abstract_canon_sha256":"9328b48156a1a85ade47565f8c919fb9a2972089126cf6745bd39f91717338e9"},"schema_version":"1.0"},"canonical_sha256":"72f426b112903ccfdc48214f2d8df4531292504ed64c2c4ada4dd128dfe4d688","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:56:18.719810Z","signature_b64":"kVkV+7QPZg05OQmWYggh6dd24nn8PzIgD6P5Rg/XJuhVCgJyGyMdILAJ+xvY6smMG08bAdV7lDQ1bU49VvusAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"72f426b112903ccfdc48214f2d8df4531292504ed64c2c4ada4dd128dfe4d688","last_reissued_at":"2026-07-05T02:56:18.719403Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:56:18.719403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2107.03726","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":"2026-07-05T02:56:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T9nCP/XJUDpDfTqIstpbPO5BClwLz7Pmj2DVG9rx0J6PXLzjMowvtcD/qnQWPMKKiuvnY5ge0Kp1uSw4pvOEAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T06:36:25.526455Z"},"content_sha256":"6dacf11795c9674ff24f7a7ad63e418b35704fb6e8f32388f0cda54922d0150d","schema_version":"1.0","event_id":"sha256:6dacf11795c9674ff24f7a7ad63e418b35704fb6e8f32388f0cda54922d0150d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:OL2CNMISSA6M7XCIEFHS3DPUKM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Zeph: Cryptographic Enforcement of End-to-End Data Privacy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Alexander Viand, Anwar Hithnawi, Hossein Shafagh, Lukas Burkhalter, Nicolas K\\\"uchler","submitted_at":"2021-07-08T10:11:27Z","abstract_excerpt":"As increasingly more sensitive data is being collected to gain valuable insights, the need to natively integrate privacy controls in data analytics frameworks is growing in importance. Today, privacy controls are enforced by data curators with full access to data in the clear. However, a plethora of recent data breaches show that even widely trusted service providers can be compromised. Additionally, there is no assurance that data processing and handling comply with the claimed privacy policies. This motivates the need for a new approach to data privacy that can provide strong assurance and c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.03726","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/2107.03726/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":"2026-07-05T02:56:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+qXhiOOyqU5UjqVxqswBD3EUgs1KGlWuzTkorxUatAaGYCx1rYuN9qWm9Ll7+dFKvkxu0lgcZDxuSAshZzVVCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T06:36:25.526830Z"},"content_sha256":"b4da13a1a90f796dcfbe4c2ca222206a02971887ccfcc35a7414f5a5248d9c34","schema_version":"1.0","event_id":"sha256:b4da13a1a90f796dcfbe4c2ca222206a02971887ccfcc35a7414f5a5248d9c34"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OL2CNMISSA6M7XCIEFHS3DPUKM/bundle.json","state_url":"https://pith.science/pith/OL2CNMISSA6M7XCIEFHS3DPUKM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OL2CNMISSA6M7XCIEFHS3DPUKM/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":"2026-07-13T06:36:25Z","links":{"resolver":"https://pith.science/pith/OL2CNMISSA6M7XCIEFHS3DPUKM","bundle":"https://pith.science/pith/OL2CNMISSA6M7XCIEFHS3DPUKM/bundle.json","state":"https://pith.science/pith/OL2CNMISSA6M7XCIEFHS3DPUKM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OL2CNMISSA6M7XCIEFHS3DPUKM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:OL2CNMISSA6M7XCIEFHS3DPUKM","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":"9328b48156a1a85ade47565f8c919fb9a2972089126cf6745bd39f91717338e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2021-07-08T10:11:27Z","title_canon_sha256":"83d5743fa14495efda2b2d5d20757787421963527fd4fc5052b13624bddb95fa"},"schema_version":"1.0","source":{"id":"2107.03726","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.03726","created_at":"2026-07-05T02:56:18Z"},{"alias_kind":"arxiv_version","alias_value":"2107.03726v1","created_at":"2026-07-05T02:56:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.03726","created_at":"2026-07-05T02:56:18Z"},{"alias_kind":"pith_short_12","alias_value":"OL2CNMISSA6M","created_at":"2026-07-05T02:56:18Z"},{"alias_kind":"pith_short_16","alias_value":"OL2CNMISSA6M7XCI","created_at":"2026-07-05T02:56:18Z"},{"alias_kind":"pith_short_8","alias_value":"OL2CNMIS","created_at":"2026-07-05T02:56:18Z"}],"graph_snapshots":[{"event_id":"sha256:b4da13a1a90f796dcfbe4c2ca222206a02971887ccfcc35a7414f5a5248d9c34","target":"graph","created_at":"2026-07-05T02:56:18Z","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/2107.03726/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"As increasingly more sensitive data is being collected to gain valuable insights, the need to natively integrate privacy controls in data analytics frameworks is growing in importance. Today, privacy controls are enforced by data curators with full access to data in the clear. However, a plethora of recent data breaches show that even widely trusted service providers can be compromised. Additionally, there is no assurance that data processing and handling comply with the claimed privacy policies. This motivates the need for a new approach to data privacy that can provide strong assurance and c","authors_text":"Alexander Viand, Anwar Hithnawi, Hossein Shafagh, Lukas Burkhalter, Nicolas K\\\"uchler","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2021-07-08T10:11:27Z","title":"Zeph: Cryptographic Enforcement of End-to-End Data Privacy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.03726","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":"sha256:6dacf11795c9674ff24f7a7ad63e418b35704fb6e8f32388f0cda54922d0150d","target":"record","created_at":"2026-07-05T02:56:18Z","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":"9328b48156a1a85ade47565f8c919fb9a2972089126cf6745bd39f91717338e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2021-07-08T10:11:27Z","title_canon_sha256":"83d5743fa14495efda2b2d5d20757787421963527fd4fc5052b13624bddb95fa"},"schema_version":"1.0","source":{"id":"2107.03726","kind":"arxiv","version":1}},"canonical_sha256":"72f426b112903ccfdc48214f2d8df4531292504ed64c2c4ada4dd128dfe4d688","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"72f426b112903ccfdc48214f2d8df4531292504ed64c2c4ada4dd128dfe4d688","first_computed_at":"2026-07-05T02:56:18.719403Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:56:18.719403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kVkV+7QPZg05OQmWYggh6dd24nn8PzIgD6P5Rg/XJuhVCgJyGyMdILAJ+xvY6smMG08bAdV7lDQ1bU49VvusAg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:56:18.719810Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.03726","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6dacf11795c9674ff24f7a7ad63e418b35704fb6e8f32388f0cda54922d0150d","sha256:b4da13a1a90f796dcfbe4c2ca222206a02971887ccfcc35a7414f5a5248d9c34"],"state_sha256":"bffc6073d34dffe51ced33d7bdfd29919ab856859b2a6a346d068009ab100d15"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"61ybOKCpi4WIfqxlBKwVK5qyLUT0LpJurcNMPlnIMvHw0tRDmpQDj7WpEKNEqmqvXK93+MQkaJfjr0gkiN6mCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-13T06:36:25.528836Z","bundle_sha256":"9e1b2babf593920be151aac56114136c3196f912d335b6db87aa9aed4ec95a94"}}