{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:X4R4JC4RP42MUHOBZ3S6SS6JOY","short_pith_number":"pith:X4R4JC4R","canonical_record":{"source":{"id":"1704.05305","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-04-18T12:40:54Z","cross_cats_sorted":[],"title_canon_sha256":"539b9f08fb48278bbc4d01337fdab9d724831407c0ef41206feec2781a001290","abstract_canon_sha256":"be29ca8035e4c136971ae8a403a61e2af7cb741bae2fe0148bfe7a4053e17dc1"},"schema_version":"1.0"},"canonical_sha256":"bf23c48b917f34ca1dc1cee5e94bc97620ac7bad819d86f5ae052627d3073b36","source":{"kind":"arxiv","id":"1704.05305","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.05305","created_at":"2026-05-18T00:45:31Z"},{"alias_kind":"arxiv_version","alias_value":"1704.05305v2","created_at":"2026-05-18T00:45:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.05305","created_at":"2026-05-18T00:45:31Z"},{"alias_kind":"pith_short_12","alias_value":"X4R4JC4RP42M","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"X4R4JC4RP42MUHOB","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"X4R4JC4R","created_at":"2026-05-18T12:31:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:X4R4JC4RP42MUHOBZ3S6SS6JOY","target":"record","payload":{"canonical_record":{"source":{"id":"1704.05305","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-04-18T12:40:54Z","cross_cats_sorted":[],"title_canon_sha256":"539b9f08fb48278bbc4d01337fdab9d724831407c0ef41206feec2781a001290","abstract_canon_sha256":"be29ca8035e4c136971ae8a403a61e2af7cb741bae2fe0148bfe7a4053e17dc1"},"schema_version":"1.0"},"canonical_sha256":"bf23c48b917f34ca1dc1cee5e94bc97620ac7bad819d86f5ae052627d3073b36","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:31.894341Z","signature_b64":"0MFZ40879zJCd/7r+OwBEzM4aVDlBX+UH60LM0KMRwmoRK+RdGOkSdTAew+r1UpdHXf5b+pq4/M3bN5Fao8ZDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf23c48b917f34ca1dc1cee5e94bc97620ac7bad819d86f5ae052627d3073b36","last_reissued_at":"2026-05-18T00:45:31.893884Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:31.893884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.05305","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":"2026-05-18T00:45:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RbppME/gakf+63PqAt014LNlCW0yflD81xj7/pLzZ5jUPsvA0+6hbIZXIGMefwnATFX5JnimT/FKpxMeYqi6Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T15:18:30.692138Z"},"content_sha256":"b9fecff23fb6aef4719ed49916c8315810de09d74c4624d2cb1600f489fc0fc4","schema_version":"1.0","event_id":"sha256:b9fecff23fb6aef4719ed49916c8315810de09d74c4624d2cb1600f489fc0fc4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:X4R4JC4RP42MUHOBZ3S6SS6JOY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"How to Cooperate Locally to Improve Global Privacy in Social Networks? On Amplification of Privacy Preserving Data Aggregation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SI","authors_text":"Krzysztof Grining, Ma{\\l}gorzata Sulkowska, Marek Klonowski","submitted_at":"2017-04-18T12:40:54Z","abstract_excerpt":"In many systems privacy of users depends on the number of participants applying collectively some method to protect their security. Indeed, there are numerous already classic results about revealing aggregated data from a set of users. The conclusion is usually as follows: if you have enough friends to \"aggregate\" the private data, you can safely reveal your private information.\n  Apart from data aggregation, it has been noticed that in a wider context privacy can be often reduced to being hidden in a crowd. Generally, the problems is how to create such crowd. This task may be not easy in some"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.05305","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":"2026-05-18T00:45:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oZo6TC93DAXZY3tfoA5y0wwF0giLu9KVb0z5491DQExtrWkCygfkVLec9mhCc4EF41jZAoo9k7OhYGLLOeurDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T15:18:30.692504Z"},"content_sha256":"4bf48d2c61095f9ad266735fc5c253e66f8981895263145a4a751f1f8b548afb","schema_version":"1.0","event_id":"sha256:4bf48d2c61095f9ad266735fc5c253e66f8981895263145a4a751f1f8b548afb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X4R4JC4RP42MUHOBZ3S6SS6JOY/bundle.json","state_url":"https://pith.science/pith/X4R4JC4RP42MUHOBZ3S6SS6JOY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X4R4JC4RP42MUHOBZ3S6SS6JOY/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":"2026-07-03T15:18:30Z","links":{"resolver":"https://pith.science/pith/X4R4JC4RP42MUHOBZ3S6SS6JOY","bundle":"https://pith.science/pith/X4R4JC4RP42MUHOBZ3S6SS6JOY/bundle.json","state":"https://pith.science/pith/X4R4JC4RP42MUHOBZ3S6SS6JOY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X4R4JC4RP42MUHOBZ3S6SS6JOY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:X4R4JC4RP42MUHOBZ3S6SS6JOY","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":"be29ca8035e4c136971ae8a403a61e2af7cb741bae2fe0148bfe7a4053e17dc1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-04-18T12:40:54Z","title_canon_sha256":"539b9f08fb48278bbc4d01337fdab9d724831407c0ef41206feec2781a001290"},"schema_version":"1.0","source":{"id":"1704.05305","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.05305","created_at":"2026-05-18T00:45:31Z"},{"alias_kind":"arxiv_version","alias_value":"1704.05305v2","created_at":"2026-05-18T00:45:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.05305","created_at":"2026-05-18T00:45:31Z"},{"alias_kind":"pith_short_12","alias_value":"X4R4JC4RP42M","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"X4R4JC4RP42MUHOB","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"X4R4JC4R","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:4bf48d2c61095f9ad266735fc5c253e66f8981895263145a4a751f1f8b548afb","target":"graph","created_at":"2026-05-18T00:45:31Z","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 many systems privacy of users depends on the number of participants applying collectively some method to protect their security. Indeed, there are numerous already classic results about revealing aggregated data from a set of users. The conclusion is usually as follows: if you have enough friends to \"aggregate\" the private data, you can safely reveal your private information.\n  Apart from data aggregation, it has been noticed that in a wider context privacy can be often reduced to being hidden in a crowd. Generally, the problems is how to create such crowd. This task may be not easy in some","authors_text":"Krzysztof Grining, Ma{\\l}gorzata Sulkowska, Marek Klonowski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-04-18T12:40:54Z","title":"How to Cooperate Locally to Improve Global Privacy in Social Networks? On Amplification of Privacy Preserving Data Aggregation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.05305","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:b9fecff23fb6aef4719ed49916c8315810de09d74c4624d2cb1600f489fc0fc4","target":"record","created_at":"2026-05-18T00:45:31Z","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":"be29ca8035e4c136971ae8a403a61e2af7cb741bae2fe0148bfe7a4053e17dc1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2017-04-18T12:40:54Z","title_canon_sha256":"539b9f08fb48278bbc4d01337fdab9d724831407c0ef41206feec2781a001290"},"schema_version":"1.0","source":{"id":"1704.05305","kind":"arxiv","version":2}},"canonical_sha256":"bf23c48b917f34ca1dc1cee5e94bc97620ac7bad819d86f5ae052627d3073b36","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf23c48b917f34ca1dc1cee5e94bc97620ac7bad819d86f5ae052627d3073b36","first_computed_at":"2026-05-18T00:45:31.893884Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:31.893884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0MFZ40879zJCd/7r+OwBEzM4aVDlBX+UH60LM0KMRwmoRK+RdGOkSdTAew+r1UpdHXf5b+pq4/M3bN5Fao8ZDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:31.894341Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.05305","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9fecff23fb6aef4719ed49916c8315810de09d74c4624d2cb1600f489fc0fc4","sha256:4bf48d2c61095f9ad266735fc5c253e66f8981895263145a4a751f1f8b548afb"],"state_sha256":"ff78045401a53f3802dd90eab81a26ad2fee35fa74cef10e4f34c51ce1270ff2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gcx+UDWPrm9P2mFi+CVgwoeTseyd4t84c83RncQOhiCebnfzY1k4or5ulE9KfMVP6FbW1RySjINR1rvM5R+yCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T15:18:30.694543Z","bundle_sha256":"69fdbfa434c67e5f0d53aed0f03e75b246ef471bf72ce98d2af69971e82b9b3d"}}