{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:AR6BKFUEJYXFGDLLAVKL6TAKDI","short_pith_number":"pith:AR6BKFUE","canonical_record":{"source":{"id":"2304.09572","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2023-04-19T11:21:21Z","cross_cats_sorted":["cs.IR"],"title_canon_sha256":"8032c3daf9d2a4801258326fccca85c1ecd9851eac41d044d932d6d7741fb441","abstract_canon_sha256":"00963dda525a073e1be6ca9f6751ac590096531700edd3dd4dee64e1dc1efa15"},"schema_version":"1.0"},"canonical_sha256":"047c1516844e2e530d6b0554bf4c0a1a06b6d5e1891def07766a7725a126b3bb","source":{"kind":"arxiv","id":"2304.09572","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.09572","created_at":"2026-07-05T07:56:15Z"},{"alias_kind":"arxiv_version","alias_value":"2304.09572v2","created_at":"2026-07-05T07:56:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.09572","created_at":"2026-07-05T07:56:15Z"},{"alias_kind":"pith_short_12","alias_value":"AR6BKFUEJYXF","created_at":"2026-07-05T07:56:15Z"},{"alias_kind":"pith_short_16","alias_value":"AR6BKFUEJYXFGDLL","created_at":"2026-07-05T07:56:15Z"},{"alias_kind":"pith_short_8","alias_value":"AR6BKFUE","created_at":"2026-07-05T07:56:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:AR6BKFUEJYXFGDLLAVKL6TAKDI","target":"record","payload":{"canonical_record":{"source":{"id":"2304.09572","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2023-04-19T11:21:21Z","cross_cats_sorted":["cs.IR"],"title_canon_sha256":"8032c3daf9d2a4801258326fccca85c1ecd9851eac41d044d932d6d7741fb441","abstract_canon_sha256":"00963dda525a073e1be6ca9f6751ac590096531700edd3dd4dee64e1dc1efa15"},"schema_version":"1.0"},"canonical_sha256":"047c1516844e2e530d6b0554bf4c0a1a06b6d5e1891def07766a7725a126b3bb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:56:15.015211Z","signature_b64":"cjZy0YpicYrtmoEQ1hS65VHbwuiaTEYWHgPycsnOTl1KO38G3ouPXrZBemfqSqJ11uo4xZMceP0Ptp1inAapBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"047c1516844e2e530d6b0554bf4c0a1a06b6d5e1891def07766a7725a126b3bb","last_reissued_at":"2026-07-05T07:56:15.014777Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:56:15.014777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2304.09572","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":"2026-07-05T07:56:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T6qDi0yvFUijDHApsFaJ/SGvREmKYwGdm/wzopPrfTQtyTiubyO7H0duKtaHJyMmK5s3IHxmGZAThAaKr9WKBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T05:05:05.961125Z"},"content_sha256":"775ba961fd800fba926bc457fed73ca2fa0f22f0e7891335bd8d8c99c3d42b4c","schema_version":"1.0","event_id":"sha256:775ba961fd800fba926bc457fed73ca2fa0f22f0e7891335bd8d8c99c3d42b4c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:AR6BKFUEJYXFGDLLAVKL6TAKDI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Ecosystem for Personal Knowledge Graphs: A Survey and Research Roadmap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IR"],"primary_cat":"cs.AI","authors_text":"Krisztian Balog, Martin G. Skj{\\ae}veland, Nolwenn Bernard, Trond Linjordet, Weronika {\\L}ajewska","submitted_at":"2023-04-19T11:21:21Z","abstract_excerpt":"This paper presents an ecosystem for personal knowledge graphs (PKGs), commonly defined as resources of structured information about entities related to an individual, their attributes, and the relations between them. PKGs are a key enabler of secure and sophisticated personal data management and personalized services. However, there are challenges that need to be addressed before PKGs can achieve widespread adoption. One of the fundamental challenges is the very definition of what constitutes a PKG, as there are multiple interpretations of the term. We propose our own definition of a PKG, emp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.09572","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2304.09572/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":"2026-07-05T07:56:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"esrtLQLz7RhsCR+yZ9/8LOFhtgxtjv9Oh6mEdgKDHgLDly/qu0m15jSSedkDM2LnOk0BEYuv3j5r0CaiczL7Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T05:05:05.961637Z"},"content_sha256":"7685424f5a8d75daf51371b88783e48c8c23422ff99b84fd5900eb77858b28f5","schema_version":"1.0","event_id":"sha256:7685424f5a8d75daf51371b88783e48c8c23422ff99b84fd5900eb77858b28f5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AR6BKFUEJYXFGDLLAVKL6TAKDI/bundle.json","state_url":"https://pith.science/pith/AR6BKFUEJYXFGDLLAVKL6TAKDI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AR6BKFUEJYXFGDLLAVKL6TAKDI/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":"2026-08-19T05:05:05Z","links":{"resolver":"https://pith.science/pith/AR6BKFUEJYXFGDLLAVKL6TAKDI","bundle":"https://pith.science/pith/AR6BKFUEJYXFGDLLAVKL6TAKDI/bundle.json","state":"https://pith.science/pith/AR6BKFUEJYXFGDLLAVKL6TAKDI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AR6BKFUEJYXFGDLLAVKL6TAKDI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:AR6BKFUEJYXFGDLLAVKL6TAKDI","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":"00963dda525a073e1be6ca9f6751ac590096531700edd3dd4dee64e1dc1efa15","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2023-04-19T11:21:21Z","title_canon_sha256":"8032c3daf9d2a4801258326fccca85c1ecd9851eac41d044d932d6d7741fb441"},"schema_version":"1.0","source":{"id":"2304.09572","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2304.09572","created_at":"2026-07-05T07:56:15Z"},{"alias_kind":"arxiv_version","alias_value":"2304.09572v2","created_at":"2026-07-05T07:56:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2304.09572","created_at":"2026-07-05T07:56:15Z"},{"alias_kind":"pith_short_12","alias_value":"AR6BKFUEJYXF","created_at":"2026-07-05T07:56:15Z"},{"alias_kind":"pith_short_16","alias_value":"AR6BKFUEJYXFGDLL","created_at":"2026-07-05T07:56:15Z"},{"alias_kind":"pith_short_8","alias_value":"AR6BKFUE","created_at":"2026-07-05T07:56:15Z"}],"graph_snapshots":[{"event_id":"sha256:7685424f5a8d75daf51371b88783e48c8c23422ff99b84fd5900eb77858b28f5","target":"graph","created_at":"2026-07-05T07:56:15Z","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/2304.09572/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper presents an ecosystem for personal knowledge graphs (PKGs), commonly defined as resources of structured information about entities related to an individual, their attributes, and the relations between them. PKGs are a key enabler of secure and sophisticated personal data management and personalized services. However, there are challenges that need to be addressed before PKGs can achieve widespread adoption. One of the fundamental challenges is the very definition of what constitutes a PKG, as there are multiple interpretations of the term. We propose our own definition of a PKG, emp","authors_text":"Krisztian Balog, Martin G. Skj{\\ae}veland, Nolwenn Bernard, Trond Linjordet, Weronika {\\L}ajewska","cross_cats":["cs.IR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2023-04-19T11:21:21Z","title":"An Ecosystem for Personal Knowledge Graphs: A Survey and Research Roadmap"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2304.09572","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":"sha256:775ba961fd800fba926bc457fed73ca2fa0f22f0e7891335bd8d8c99c3d42b4c","target":"record","created_at":"2026-07-05T07:56:15Z","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":"00963dda525a073e1be6ca9f6751ac590096531700edd3dd4dee64e1dc1efa15","cross_cats_sorted":["cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.AI","submitted_at":"2023-04-19T11:21:21Z","title_canon_sha256":"8032c3daf9d2a4801258326fccca85c1ecd9851eac41d044d932d6d7741fb441"},"schema_version":"1.0","source":{"id":"2304.09572","kind":"arxiv","version":2}},"canonical_sha256":"047c1516844e2e530d6b0554bf4c0a1a06b6d5e1891def07766a7725a126b3bb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"047c1516844e2e530d6b0554bf4c0a1a06b6d5e1891def07766a7725a126b3bb","first_computed_at":"2026-07-05T07:56:15.014777Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:56:15.014777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cjZy0YpicYrtmoEQ1hS65VHbwuiaTEYWHgPycsnOTl1KO38G3ouPXrZBemfqSqJ11uo4xZMceP0Ptp1inAapBg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:56:15.015211Z","signed_message":"canonical_sha256_bytes"},"source_id":"2304.09572","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:775ba961fd800fba926bc457fed73ca2fa0f22f0e7891335bd8d8c99c3d42b4c","sha256:7685424f5a8d75daf51371b88783e48c8c23422ff99b84fd5900eb77858b28f5"],"state_sha256":"fc4de6e826b60d5928fd5caef802a083721dc689d4bbb431086589f1ecebd6fb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y0ZVIkL81zz3lqmeOTvl98DZTk440uo1YrVeSUX6bOUdNSKUYIM0SYavgJNnqTlOwXuZbsl8ksyHGzEnSuEXBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T05:05:05.967119Z","bundle_sha256":"df59f105bf15b45d0f3daa861a14cd94ca367d1a58d0c2ba119e466f8f9f958f"}}