{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:YODZLKZHJZAFP4YZELBJ6M6Q52","short_pith_number":"pith:YODZLKZH","canonical_record":{"source":{"id":"1503.06497","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-03-22T23:35:53Z","cross_cats_sorted":["cs.SI"],"title_canon_sha256":"81aeaee4ea2ab36e612d115a55b94f6e2561119810037a8b72b4d74a828a0cdf","abstract_canon_sha256":"437aba9ec98fb0bd03f9a496094bdfd775cc71674fcc753b1ad37e79f6523af5"},"schema_version":"1.0"},"canonical_sha256":"c38795ab274e4057f31922c29f33d0eeb8de97753a7a7d836b7828dd929f0887","source":{"kind":"arxiv","id":"1503.06497","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.06497","created_at":"2026-05-18T02:20:38Z"},{"alias_kind":"arxiv_version","alias_value":"1503.06497v1","created_at":"2026-05-18T02:20:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06497","created_at":"2026-05-18T02:20:38Z"},{"alias_kind":"pith_short_12","alias_value":"YODZLKZHJZAF","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"YODZLKZHJZAFP4YZ","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"YODZLKZH","created_at":"2026-05-18T12:29:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:YODZLKZHJZAFP4YZELBJ6M6Q52","target":"record","payload":{"canonical_record":{"source":{"id":"1503.06497","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-03-22T23:35:53Z","cross_cats_sorted":["cs.SI"],"title_canon_sha256":"81aeaee4ea2ab36e612d115a55b94f6e2561119810037a8b72b4d74a828a0cdf","abstract_canon_sha256":"437aba9ec98fb0bd03f9a496094bdfd775cc71674fcc753b1ad37e79f6523af5"},"schema_version":"1.0"},"canonical_sha256":"c38795ab274e4057f31922c29f33d0eeb8de97753a7a7d836b7828dd929f0887","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:20:38.222833Z","signature_b64":"RPEGDSpsRIp3s2oG890SpWVTc7S6hznlQasyyHopv0QSNWekejcLsB1mQgPvodJCmrjNN/ShcQUCyWMt/IIaDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c38795ab274e4057f31922c29f33d0eeb8de97753a7a7d836b7828dd929f0887","last_reissued_at":"2026-05-18T02:20:38.222131Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:20:38.222131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.06497","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":"2026-05-18T02:20:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K4/psgHHMPzR1jlOOsVTXKhEsVdT1NAmGQLXY90VY0NrLZ5AEzdBx6HePmR2LiRr3223FmAQCKnpRD5dQRucBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T15:45:16.354358Z"},"content_sha256":"bef08aed2e0a25ab8e82db29c9e5e56e639b817086d729c835205a4158398beb","schema_version":"1.0","event_id":"sha256:bef08aed2e0a25ab8e82db29c9e5e56e639b817086d729c835205a4158398beb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:YODZLKZHJZAFP4YZELBJ6M6Q52","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the k-Anonymization of Time-varying and Multi-layer Social Graphs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SI"],"primary_cat":"cs.CR","authors_text":"Andrea Torsello, Luca Rossi, Mirco Musolesi","submitted_at":"2015-03-22T23:35:53Z","abstract_excerpt":"The popularity of online social media platforms provides an unprecedented opportunity to study real-world complex networks of interactions. However, releasing this data to researchers and the public comes at the cost of potentially exposing private and sensitive user information. It has been shown that a naive anonymization of a network by removing the identity of the nodes is not sufficient to preserve users' privacy. In order to deal with malicious attacks, k-anonymity solutions have been proposed to partially obfuscate topological information that can be used to infer nodes' identity.\n  In "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06497","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":"2026-05-18T02:20:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ImVTaQg4fDkzHqTqNMOvIBrjlICzarMRUxfyqAwdPsokGT5AnxchPVht/TqJhnuhDGWtvv0rrUGyfFKCU84UDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T15:45:16.355091Z"},"content_sha256":"ae19d8b213ff17a6e3c828bb8ea20b2e369cfaeec089341f179d44fa6293d81b","schema_version":"1.0","event_id":"sha256:ae19d8b213ff17a6e3c828bb8ea20b2e369cfaeec089341f179d44fa6293d81b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YODZLKZHJZAFP4YZELBJ6M6Q52/bundle.json","state_url":"https://pith.science/pith/YODZLKZHJZAFP4YZELBJ6M6Q52/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YODZLKZHJZAFP4YZELBJ6M6Q52/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":"2026-06-08T15:45:16Z","links":{"resolver":"https://pith.science/pith/YODZLKZHJZAFP4YZELBJ6M6Q52","bundle":"https://pith.science/pith/YODZLKZHJZAFP4YZELBJ6M6Q52/bundle.json","state":"https://pith.science/pith/YODZLKZHJZAFP4YZELBJ6M6Q52/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YODZLKZHJZAFP4YZELBJ6M6Q52/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:YODZLKZHJZAFP4YZELBJ6M6Q52","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":"437aba9ec98fb0bd03f9a496094bdfd775cc71674fcc753b1ad37e79f6523af5","cross_cats_sorted":["cs.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-03-22T23:35:53Z","title_canon_sha256":"81aeaee4ea2ab36e612d115a55b94f6e2561119810037a8b72b4d74a828a0cdf"},"schema_version":"1.0","source":{"id":"1503.06497","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.06497","created_at":"2026-05-18T02:20:38Z"},{"alias_kind":"arxiv_version","alias_value":"1503.06497v1","created_at":"2026-05-18T02:20:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06497","created_at":"2026-05-18T02:20:38Z"},{"alias_kind":"pith_short_12","alias_value":"YODZLKZHJZAF","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"YODZLKZHJZAFP4YZ","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"YODZLKZH","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:ae19d8b213ff17a6e3c828bb8ea20b2e369cfaeec089341f179d44fa6293d81b","target":"graph","created_at":"2026-05-18T02:20:38Z","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":"The popularity of online social media platforms provides an unprecedented opportunity to study real-world complex networks of interactions. However, releasing this data to researchers and the public comes at the cost of potentially exposing private and sensitive user information. It has been shown that a naive anonymization of a network by removing the identity of the nodes is not sufficient to preserve users' privacy. In order to deal with malicious attacks, k-anonymity solutions have been proposed to partially obfuscate topological information that can be used to infer nodes' identity.\n  In ","authors_text":"Andrea Torsello, Luca Rossi, Mirco Musolesi","cross_cats":["cs.SI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-03-22T23:35:53Z","title":"On the k-Anonymization of Time-varying and Multi-layer Social Graphs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06497","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:bef08aed2e0a25ab8e82db29c9e5e56e639b817086d729c835205a4158398beb","target":"record","created_at":"2026-05-18T02:20:38Z","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":"437aba9ec98fb0bd03f9a496094bdfd775cc71674fcc753b1ad37e79f6523af5","cross_cats_sorted":["cs.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-03-22T23:35:53Z","title_canon_sha256":"81aeaee4ea2ab36e612d115a55b94f6e2561119810037a8b72b4d74a828a0cdf"},"schema_version":"1.0","source":{"id":"1503.06497","kind":"arxiv","version":1}},"canonical_sha256":"c38795ab274e4057f31922c29f33d0eeb8de97753a7a7d836b7828dd929f0887","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c38795ab274e4057f31922c29f33d0eeb8de97753a7a7d836b7828dd929f0887","first_computed_at":"2026-05-18T02:20:38.222131Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:20:38.222131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RPEGDSpsRIp3s2oG890SpWVTc7S6hznlQasyyHopv0QSNWekejcLsB1mQgPvodJCmrjNN/ShcQUCyWMt/IIaDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:20:38.222833Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.06497","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bef08aed2e0a25ab8e82db29c9e5e56e639b817086d729c835205a4158398beb","sha256:ae19d8b213ff17a6e3c828bb8ea20b2e369cfaeec089341f179d44fa6293d81b"],"state_sha256":"a7f7afab89abb13cac755c8db6de0fcd41a4b4d8c6f035c0d56cea5ef54ad160"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d2VZfh2wI89FlG+M8LRF3CG+ggnnNQPJqaZ0cbpddYFRDQKBPuMhVLTk5TGBCpk0g3lzzeRmGudsHlmw4/pRAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T15:45:16.358886Z","bundle_sha256":"823ba2baf11a8921703cec675e728bbeed7e388acbd14f4b514cfe0b54fa94c8"}}