{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:74WLKIM3LCJYE3GFACV4M72AJ6","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":"fac4e8f8994d21e4e46f3d47f6ac56db207991944cf39624255f37e03621806d","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.PL","submitted_at":"2017-08-30T08:26:44Z","title_canon_sha256":"50c62d84edf3196bbc3ca6cd6d0997dfa04e9d4bbcac7d3bfd9158d8d1660735"},"schema_version":"1.0","source":{"id":"1708.09158","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.09158","created_at":"2026-05-18T00:36:20Z"},{"alias_kind":"arxiv_version","alias_value":"1708.09158v1","created_at":"2026-05-18T00:36:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.09158","created_at":"2026-05-18T00:36:20Z"},{"alias_kind":"pith_short_12","alias_value":"74WLKIM3LCJY","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"74WLKIM3LCJYE3GF","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"74WLKIM3","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:9e2dc4036b23f2ae6d0d710de3e5bdb71a2f3de044fd1a947bbf88286fabb46e","target":"graph","created_at":"2026-05-18T00:36:20Z","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":"Redis is an in-memory data structure store, often used as a database, with a Haskell interface Hedis. Redis is dynamically typed --- a key can be discarded and re-associated to a value of a different type, and a command, when fetching a value of a type it does not expect, signals a runtime error. We develop a domain-specific language that, by exploiting Haskell type-level programming techniques including indexed monad, type-level literals and closed type families, keeps track of types of values in the database and statically guarantees that type errors cannot happen for a class of Redis progra","authors_text":"Academia Sinica, Shin-Cheng Mu (1) ((1) Institute of Information Science, Taiwan), Ting-Yan Lai (1), Tyng-Ruey Chuang (1)","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.PL","submitted_at":"2017-08-30T08:26:44Z","title":"Type Safe Redis Queries: A Case Study of Type-Level Programming in Haskell"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09158","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":"sha256:81e9507c3a2282c82909d153cf959d1bc40a4b8480d8ea27ed9eb59beefe7d04","target":"record","created_at":"2026-05-18T00:36:20Z","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":"fac4e8f8994d21e4e46f3d47f6ac56db207991944cf39624255f37e03621806d","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.PL","submitted_at":"2017-08-30T08:26:44Z","title_canon_sha256":"50c62d84edf3196bbc3ca6cd6d0997dfa04e9d4bbcac7d3bfd9158d8d1660735"},"schema_version":"1.0","source":{"id":"1708.09158","kind":"arxiv","version":1}},"canonical_sha256":"ff2cb5219b5893826cc500abc67f404f9ebc54c3e0a80eab35ce1561d42f36c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff2cb5219b5893826cc500abc67f404f9ebc54c3e0a80eab35ce1561d42f36c7","first_computed_at":"2026-05-18T00:36:20.793333Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:20.793333Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FdQfpVCW8Q5Dk5cRwuXZy88fL7i3D38p9+5L1EyHrRAtlaMspqs8sKpDfbewVdkciIOAITtkXtljWVok2ilRCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:20.793944Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.09158","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81e9507c3a2282c82909d153cf959d1bc40a4b8480d8ea27ed9eb59beefe7d04","sha256:9e2dc4036b23f2ae6d0d710de3e5bdb71a2f3de044fd1a947bbf88286fabb46e"],"state_sha256":"fbce9c01165768626b2139b3080cfeed5572076fecfb9d6fa6175ae4002ffb6f"}