{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:SWTGA7VRURPOL2SBCCTMQG24YH","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":"e69c6b2ebda1ef8d5536c41b2981f1ee67b01011199fd4697821263a6096fa56","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2019-09-12T11:46:09Z","title_canon_sha256":"3a0a431e2e50d0574274f82b31e7defb356452042f2426de683107d37bc5a568"},"schema_version":"1.0","source":{"id":"1909.05581","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.05581","created_at":"2026-07-05T00:04:16Z"},{"alias_kind":"arxiv_version","alias_value":"1909.05581v1","created_at":"2026-07-05T00:04:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.05581","created_at":"2026-07-05T00:04:16Z"},{"alias_kind":"pith_short_12","alias_value":"SWTGA7VRURPO","created_at":"2026-07-05T00:04:16Z"},{"alias_kind":"pith_short_16","alias_value":"SWTGA7VRURPOL2SB","created_at":"2026-07-05T00:04:16Z"},{"alias_kind":"pith_short_8","alias_value":"SWTGA7VR","created_at":"2026-07-05T00:04:16Z"}],"graph_snapshots":[{"event_id":"sha256:b9bb0344e5f0df0607734fdc71889906904dba2d497d6a9fed8b7405c8f3d9d2","target":"graph","created_at":"2026-07-05T00:04:16Z","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/1909.05581/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"One form of type checking used in gradually typed language is transient type checking: whenever an object 'flows' through code with a type annotation, the object is dynamically checked to ensure it has the methods required by the annotation. Just-in-time compilation and optimisation in virtual machines can eliminate much of the overhead of run-time transient type checks. Unfortunately this optimisation is not uniform: some type checks will significantly decrease, or even increase, a program's performance.\n  In this paper, we refine the so called \"Takikawa\" protocol, and use it to identify whic","authors_text":"Isaac Oscar Gariano, James Noble, Michael Homer, Richard Roberts, Stefan Marr","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2019-09-12T11:46:09Z","title":"Which of My Transient Type Checks Are Not (Almost) Free?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.05581","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":"sha256:2f07c0590b58e5c19ca1d26a9dc0b9484f10b491ac83ecfd012baafb7d47633b","target":"record","created_at":"2026-07-05T00:04:16Z","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":"e69c6b2ebda1ef8d5536c41b2981f1ee67b01011199fd4697821263a6096fa56","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2019-09-12T11:46:09Z","title_canon_sha256":"3a0a431e2e50d0574274f82b31e7defb356452042f2426de683107d37bc5a568"},"schema_version":"1.0","source":{"id":"1909.05581","kind":"arxiv","version":1}},"canonical_sha256":"95a6607eb1a45ee5ea4110a6c81b5cc1d408cf52c9e01d4a785bafb86c6c41bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"95a6607eb1a45ee5ea4110a6c81b5cc1d408cf52c9e01d4a785bafb86c6c41bc","first_computed_at":"2026-07-05T00:04:16.185589Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:04:16.185589Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X0cb2r2sPjRDT8L9WAx3v++DbRlkBgLd+q1PXYFTD7KfJEroIB0IRrntiPJ+SdSHAjkqWlkVXhGq9YjHOvPQDw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:04:16.186005Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.05581","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f07c0590b58e5c19ca1d26a9dc0b9484f10b491ac83ecfd012baafb7d47633b","sha256:b9bb0344e5f0df0607734fdc71889906904dba2d497d6a9fed8b7405c8f3d9d2"],"state_sha256":"6aa2ba01bd6e1d9d7234bcaff84fb6f3531b3d36ca58a2401ac429b23ca035ba"}