{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:62KHRAU5CY7S3L74C7QTSH37EC","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":"84439ee23a5f6f0cf59f89d82701de221374ed972c1831bd11348ee144e1084d","cross_cats_sorted":["q-fin.PR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.ST","submitted_at":"2017-04-04T12:42:35Z","title_canon_sha256":"caee8dd8b2517b093f677877a9ef666c49b60bb4db1dba9027a1e41504c2b830"},"schema_version":"1.0","source":{"id":"1704.00985","kind":"arxiv","version":6}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.00985","created_at":"2026-05-18T00:26:30Z"},{"alias_kind":"arxiv_version","alias_value":"1704.00985v6","created_at":"2026-05-18T00:26:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.00985","created_at":"2026-05-18T00:26:30Z"},{"alias_kind":"pith_short_12","alias_value":"62KHRAU5CY7S","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"62KHRAU5CY7S3L74","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"62KHRAU5","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:baaa15d8d940ddb3c7d2e593a71a309c6a0dcaed4e0a78b2a26e706c58f76acf","target":"graph","created_at":"2026-05-18T00:26:30Z","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 investigate the relationship between market efficiency of rice futures transaction in Osaka and the Japanese government intervention in rice distributions by directly buying and selling rice during the interwar period, from the middle 1910s to 1939, considering the context of \"discretion versus rules.\" We use a time-varying VAR model to compare market efficiency and the government's actions over time. We found the two facts by featuring the time-varying nature of the market efficiency. First, the intervention with discretionary power disrupted the rice market and reduced market efficiency i","authors_text":"Akihiko Noda, Kiyotaka Maeda, Mikio Ito","cross_cats":["q-fin.PR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.ST","submitted_at":"2017-04-04T12:42:35Z","title":"Discretion versus Policy Rules in Futures Markets: A Case of the Osaka-Dojima Rice Exchange, 1914-1939"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.00985","kind":"arxiv","version":6},"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:c5971b8c8c41e93d12552899d370d964135ff5e47eece02d2f6725155534fd74","target":"record","created_at":"2026-05-18T00:26:30Z","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":"84439ee23a5f6f0cf59f89d82701de221374ed972c1831bd11348ee144e1084d","cross_cats_sorted":["q-fin.PR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-fin.ST","submitted_at":"2017-04-04T12:42:35Z","title_canon_sha256":"caee8dd8b2517b093f677877a9ef666c49b60bb4db1dba9027a1e41504c2b830"},"schema_version":"1.0","source":{"id":"1704.00985","kind":"arxiv","version":6}},"canonical_sha256":"f69478829d163f2daffc17e1391f7f20ba89724d5037ac922c8ae3dde9712c46","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f69478829d163f2daffc17e1391f7f20ba89724d5037ac922c8ae3dde9712c46","first_computed_at":"2026-05-18T00:26:30.284174Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:26:30.284174Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LYRJaW/MioqcMspArikQhSl8KOb8EGYUruwuhA7RSeo4P5WV6Pg8UEyDaQW86WpmLYsByA8BGOCBOxch9GBdBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:26:30.284876Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.00985","source_kind":"arxiv","source_version":6}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c5971b8c8c41e93d12552899d370d964135ff5e47eece02d2f6725155534fd74","sha256:baaa15d8d940ddb3c7d2e593a71a309c6a0dcaed4e0a78b2a26e706c58f76acf"],"state_sha256":"888d405bdb1db470b90fb076c709b5078c4099ad75340650c39b004db6baac19"}