{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:USTWHRDWUTXBJXUKBDKQOOSJUL","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":"d25a9b9fc5c5a0d98fb05e396bd7c276e264471012079c653680a449e93356ed","cross_cats_sorted":["physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2015-04-09T14:54:37Z","title_canon_sha256":"16dd0700187a44ee78a46a634ccf31d4547093543ba1aec4a6f88f71898fed1f"},"schema_version":"1.0","source":{"id":"1504.06611","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.06611","created_at":"2026-05-18T00:51:18Z"},{"alias_kind":"arxiv_version","alias_value":"1504.06611v2","created_at":"2026-05-18T00:51:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.06611","created_at":"2026-05-18T00:51:18Z"},{"alias_kind":"pith_short_12","alias_value":"USTWHRDWUTXB","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"USTWHRDWUTXBJXUK","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"USTWHRDW","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:e6669ef47765d676f8afa99e1f110281c278864d755f35c935c77c384ece870d","target":"graph","created_at":"2026-05-18T00:51:18Z","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"},"paper":{"abstract_excerpt":"A series of recent works studying a database of chronologically sorted chess games --containing 1.4 million games played by humans between 1998 and 2007-- have shown that the popularity distribution of chess game-lines follows a Zipf's law, and that time series inferred from the sequences of those game-lines exhibit long-range memory effects. The presence of Zipf's law together with long-range memory effects was observed in several systems, however, the simultaneous emergence of these two phenomena were always studied separately up to now. In this work, by making use of a variant of the Yule-S","authors_text":"Ana L. Schaigorodsky, Juan I. Perotti, Orlando V. Billoni","cross_cats":["physics.data-an"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2015-04-09T14:54:37Z","title":"A study of memory effects in a chess database"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.06611","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:adbe9f9aeb21aa06d8d71f08f7f34f962cd924ded97bfdac0437aae476e4edbb","target":"record","created_at":"2026-05-18T00:51:18Z","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":"d25a9b9fc5c5a0d98fb05e396bd7c276e264471012079c653680a449e93356ed","cross_cats_sorted":["physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2015-04-09T14:54:37Z","title_canon_sha256":"16dd0700187a44ee78a46a634ccf31d4547093543ba1aec4a6f88f71898fed1f"},"schema_version":"1.0","source":{"id":"1504.06611","kind":"arxiv","version":2}},"canonical_sha256":"a4a763c476a4ee14de8a08d5073a49a2d4f6ea23aa2799707fc66ab7f0c9b8b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a4a763c476a4ee14de8a08d5073a49a2d4f6ea23aa2799707fc66ab7f0c9b8b9","first_computed_at":"2026-05-18T00:51:18.647590Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:18.647590Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KJaWHA6FSxKHMHPetyf+yps2ftLoEX10vhT+BjhNmtaRiD58ibw4ZOMgIyc19yS3or/1hAE1aOV/P/4pzFbwCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:18.648281Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.06611","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:adbe9f9aeb21aa06d8d71f08f7f34f962cd924ded97bfdac0437aae476e4edbb","sha256:e6669ef47765d676f8afa99e1f110281c278864d755f35c935c77c384ece870d"],"state_sha256":"0ceb1ac7220779950c7af0bbd9166c9cc79686fb8743a7dd6ca336b6a1d5a305"}