{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:DE7CIHJPAW6DN5HU2T4KJLG4CP","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":"dd27743571689f3f3b06d8665cd7cec715a7748ca53165f6352201f46d48d1b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2016-10-20T01:59:48Z","title_canon_sha256":"20a016a6c0c234107f5ace4d55c9a6ffccf3eed8c5a5820acd152ca11daaf741"},"schema_version":"1.0","source":{"id":"1610.06264","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.06264","created_at":"2026-05-18T00:42:17Z"},{"alias_kind":"arxiv_version","alias_value":"1610.06264v3","created_at":"2026-05-18T00:42:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.06264","created_at":"2026-05-18T00:42:17Z"},{"alias_kind":"pith_short_12","alias_value":"DE7CIHJPAW6D","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DE7CIHJPAW6DN5HU","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DE7CIHJP","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:49a9deebeb59284503405185304bbcffaeba093be1315086818c7d412a6ea82e","target":"graph","created_at":"2026-05-18T00:42:17Z","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":"We survey foundational features underlying modern graph query languages. We first discuss two popular graph data models: edge-labelled graphs, where nodes are connected by directed, labelled edges; and property graphs, where nodes and edges can further have attributes. Next we discuss the two most fundamental graph querying functionalities: graph patterns and navigational expressions. We start with graph patterns, in which a graph-structured query is matched against the data. Thereafter we discuss navigational expressions, in which patterns can be matched recursively against the graph to navig","authors_text":"Aidan Hogan, Domagoj Vrgoc, Juan Reutter, Marcelo Arenas, Pablo Barcelo, Renzo Angles","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2016-10-20T01:59:48Z","title":"Foundations of Modern Query Languages for Graph Databases"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.06264","kind":"arxiv","version":3},"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:a4d144d45e71196ab707cda90dfd4c80fb1624a2d8f0a349d8cc3ec43d47124f","target":"record","created_at":"2026-05-18T00:42:17Z","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":"dd27743571689f3f3b06d8665cd7cec715a7748ca53165f6352201f46d48d1b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2016-10-20T01:59:48Z","title_canon_sha256":"20a016a6c0c234107f5ace4d55c9a6ffccf3eed8c5a5820acd152ca11daaf741"},"schema_version":"1.0","source":{"id":"1610.06264","kind":"arxiv","version":3}},"canonical_sha256":"193e241d2f05bc36f4f4d4f8a4acdc13f0b2968d26c1ac17319f44daa7ec5a9f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"193e241d2f05bc36f4f4d4f8a4acdc13f0b2968d26c1ac17319f44daa7ec5a9f","first_computed_at":"2026-05-18T00:42:17.658749Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:17.658749Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"86osfeX5SU5cwjHGeCeaGgzkoOB6eCIgGayVvLpUpIP3/1WPp2chpzGF9zH4uK++i2+pgmYrCN3GS2+4mmaiCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:17.659226Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.06264","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a4d144d45e71196ab707cda90dfd4c80fb1624a2d8f0a349d8cc3ec43d47124f","sha256:49a9deebeb59284503405185304bbcffaeba093be1315086818c7d412a6ea82e"],"state_sha256":"f5163ed4fd19f257e10002b87ebcf52f1c6c1e388f1c5426aa553bd0eb0b310c"}