{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:TLZXFW5Q4TVSY3CBY7H2W2HWQO","short_pith_number":"pith:TLZXFW5Q","canonical_record":{"source":{"id":"1309.5742","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2013-09-23T09:42:20Z","cross_cats_sorted":[],"title_canon_sha256":"c9972c5b6afa72739783c0c1ae85646c6f258f97428ad8809a4fb9e2904c3924","abstract_canon_sha256":"c38018972facb2d2e36a67f5c58f8b04e5d78b175a302ebdecf77cc2172fe2b4"},"schema_version":"1.0"},"canonical_sha256":"9af372dbb0e4eb2c6c41c7cfab68f683a3373dcd3ba308e1c30bac9acc5d3da3","source":{"kind":"arxiv","id":"1309.5742","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.5742","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"arxiv_version","alias_value":"1309.5742v1","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.5742","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"pith_short_12","alias_value":"TLZXFW5Q4TVS","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TLZXFW5Q4TVSY3CB","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TLZXFW5Q","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:TLZXFW5Q4TVSY3CBY7H2W2HWQO","target":"record","payload":{"canonical_record":{"source":{"id":"1309.5742","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2013-09-23T09:42:20Z","cross_cats_sorted":[],"title_canon_sha256":"c9972c5b6afa72739783c0c1ae85646c6f258f97428ad8809a4fb9e2904c3924","abstract_canon_sha256":"c38018972facb2d2e36a67f5c58f8b04e5d78b175a302ebdecf77cc2172fe2b4"},"schema_version":"1.0"},"canonical_sha256":"9af372dbb0e4eb2c6c41c7cfab68f683a3373dcd3ba308e1c30bac9acc5d3da3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:12:34.322649Z","signature_b64":"rlffKloyrmQeI0HDrjHJsuM0z6WgIRJ8WqNjJTJCdxJ6YsIrTaEtJTppAfiCxQP8LurrVlUcBUJerCA24S4SCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9af372dbb0e4eb2c6c41c7cfab68f683a3373dcd3ba308e1c30bac9acc5d3da3","last_reissued_at":"2026-05-18T03:12:34.321849Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:12:34.321849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.5742","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:12:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W9Y9qc2YsJ4BjCThTah+OnpgogfAMZ+2jRw6Y5ijinL7Fvsjj8iVUF9GvXJFKPveR1cE6ocfc06PksQfyIE/Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:38:40.574784Z"},"content_sha256":"122890b75f5c33f00f4d4a78d9764b162bbf33fd1d4f2dd71d4fe2d222e879fa","schema_version":"1.0","event_id":"sha256:122890b75f5c33f00f4d4a78d9764b162bbf33fd1d4f2dd71d4fe2d222e879fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:TLZXFW5Q4TVSY3CBY7H2W2HWQO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the Semantics of ReFLect as a Basis for a Reflective Theorem Prover","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.LO","authors_text":"Ian Childs, Raphael Cohn, Tom Melham","submitted_at":"2013-09-23T09:42:20Z","abstract_excerpt":"This paper explores the semantics of a combinatory fragment of reFLect, the lambda-calculus underlying a functional language used by Intel Corporation for hardware design and verification. ReFLect is similar to ML, but has a primitive data type whose elements are the abstract syntax trees of reFLect expressions themselves. Following the LCF paradigm, this is intended to serve as the object language of a higher-order logic theorem prover for specification and reasoning - but one in which object- and meta-languages are unified. The aim is to intermix program evaluation and logical deduction thro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.5742","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:12:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V9OxPM2SkAgnuAPWr49+vxRqf33vEwzQQjW66MMC2ksagKogl3QbEzinO5RIFv35maJiKprftzzvkBNrBCWQAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:38:40.575127Z"},"content_sha256":"ee6952e1562fca9c97ae8a79d6f11d14f3e8fa3a221152bf35ff0050f0b1ce77","schema_version":"1.0","event_id":"sha256:ee6952e1562fca9c97ae8a79d6f11d14f3e8fa3a221152bf35ff0050f0b1ce77"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TLZXFW5Q4TVSY3CBY7H2W2HWQO/bundle.json","state_url":"https://pith.science/pith/TLZXFW5Q4TVSY3CBY7H2W2HWQO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TLZXFW5Q4TVSY3CBY7H2W2HWQO/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T14:38:40Z","links":{"resolver":"https://pith.science/pith/TLZXFW5Q4TVSY3CBY7H2W2HWQO","bundle":"https://pith.science/pith/TLZXFW5Q4TVSY3CBY7H2W2HWQO/bundle.json","state":"https://pith.science/pith/TLZXFW5Q4TVSY3CBY7H2W2HWQO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TLZXFW5Q4TVSY3CBY7H2W2HWQO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:TLZXFW5Q4TVSY3CBY7H2W2HWQO","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":"c38018972facb2d2e36a67f5c58f8b04e5d78b175a302ebdecf77cc2172fe2b4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2013-09-23T09:42:20Z","title_canon_sha256":"c9972c5b6afa72739783c0c1ae85646c6f258f97428ad8809a4fb9e2904c3924"},"schema_version":"1.0","source":{"id":"1309.5742","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.5742","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"arxiv_version","alias_value":"1309.5742v1","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.5742","created_at":"2026-05-18T03:12:34Z"},{"alias_kind":"pith_short_12","alias_value":"TLZXFW5Q4TVS","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"TLZXFW5Q4TVSY3CB","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"TLZXFW5Q","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:ee6952e1562fca9c97ae8a79d6f11d14f3e8fa3a221152bf35ff0050f0b1ce77","target":"graph","created_at":"2026-05-18T03:12:34Z","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":"This paper explores the semantics of a combinatory fragment of reFLect, the lambda-calculus underlying a functional language used by Intel Corporation for hardware design and verification. ReFLect is similar to ML, but has a primitive data type whose elements are the abstract syntax trees of reFLect expressions themselves. Following the LCF paradigm, this is intended to serve as the object language of a higher-order logic theorem prover for specification and reasoning - but one in which object- and meta-languages are unified. The aim is to intermix program evaluation and logical deduction thro","authors_text":"Ian Childs, Raphael Cohn, Tom Melham","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2013-09-23T09:42:20Z","title":"On the Semantics of ReFLect as a Basis for a Reflective Theorem Prover"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.5742","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":"sha256:122890b75f5c33f00f4d4a78d9764b162bbf33fd1d4f2dd71d4fe2d222e879fa","target":"record","created_at":"2026-05-18T03:12:34Z","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":"c38018972facb2d2e36a67f5c58f8b04e5d78b175a302ebdecf77cc2172fe2b4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2013-09-23T09:42:20Z","title_canon_sha256":"c9972c5b6afa72739783c0c1ae85646c6f258f97428ad8809a4fb9e2904c3924"},"schema_version":"1.0","source":{"id":"1309.5742","kind":"arxiv","version":1}},"canonical_sha256":"9af372dbb0e4eb2c6c41c7cfab68f683a3373dcd3ba308e1c30bac9acc5d3da3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9af372dbb0e4eb2c6c41c7cfab68f683a3373dcd3ba308e1c30bac9acc5d3da3","first_computed_at":"2026-05-18T03:12:34.321849Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:12:34.321849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rlffKloyrmQeI0HDrjHJsuM0z6WgIRJ8WqNjJTJCdxJ6YsIrTaEtJTppAfiCxQP8LurrVlUcBUJerCA24S4SCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:12:34.322649Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.5742","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:122890b75f5c33f00f4d4a78d9764b162bbf33fd1d4f2dd71d4fe2d222e879fa","sha256:ee6952e1562fca9c97ae8a79d6f11d14f3e8fa3a221152bf35ff0050f0b1ce77"],"state_sha256":"023136b7daa0a8c49dd633ef2dbb94e05d453e97b38f48074578e8b6b16a3c65"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NgVv/9oT4rHOlKK39tJQaA+2z9WZbSiqKwpqRsProrbehSKOj6fqpmrE9sie4/LgNDzrq9zpdnXm7pfWhtITCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T14:38:40.577054Z","bundle_sha256":"0c923d3f74f5ae4142559d505e3c8a6b8d07e0bf76c7ba90078e08a7d049925c"}}