{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:2V3EVAYXML6EK42FMN5D7LPHWG","short_pith_number":"pith:2V3EVAYX","canonical_record":{"source":{"id":"1806.05837","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2018-06-15T07:35:42Z","cross_cats_sorted":[],"title_canon_sha256":"c4f81725648d74205c8decc60a8e2ca12924d588737323b1c20e2540ac1f0291","abstract_canon_sha256":"2bdce20283130d2e457c82310785523fba6cf94275a967248d8bc8447ae1538f"},"schema_version":"1.0"},"canonical_sha256":"d5764a831762fc457345637a3fade7b1ba6bbc86d18f49bfa5337b2c4788cc77","source":{"kind":"arxiv","id":"1806.05837","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.05837","created_at":"2026-05-17T23:56:29Z"},{"alias_kind":"arxiv_version","alias_value":"1806.05837v1","created_at":"2026-05-17T23:56:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.05837","created_at":"2026-05-17T23:56:29Z"},{"alias_kind":"pith_short_12","alias_value":"2V3EVAYXML6E","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2V3EVAYXML6EK42F","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2V3EVAYX","created_at":"2026-05-18T12:32:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:2V3EVAYXML6EK42FMN5D7LPHWG","target":"record","payload":{"canonical_record":{"source":{"id":"1806.05837","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2018-06-15T07:35:42Z","cross_cats_sorted":[],"title_canon_sha256":"c4f81725648d74205c8decc60a8e2ca12924d588737323b1c20e2540ac1f0291","abstract_canon_sha256":"2bdce20283130d2e457c82310785523fba6cf94275a967248d8bc8447ae1538f"},"schema_version":"1.0"},"canonical_sha256":"d5764a831762fc457345637a3fade7b1ba6bbc86d18f49bfa5337b2c4788cc77","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:29.756533Z","signature_b64":"HXa/hlLi4CHkL1uoJDy+I+rJTlcZX1DsQQ9Qj0P8QgnTOSyAJ8d8qou2q3GQiB33Axazty9gb2b8QhYs2OIKAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5764a831762fc457345637a3fade7b1ba6bbc86d18f49bfa5337b2c4788cc77","last_reissued_at":"2026-05-17T23:56:29.756090Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:29.756090Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.05837","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":"2026-05-17T23:56:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/R/E+guddPKoZmgwXBrQVkiuWHwEZLBDv3l1hTer8CONZPB0ldM83Chdg5yvTq3F7RC/YqeWif/ZWBboZTKnBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T04:14:26.472136Z"},"content_sha256":"ff8507065a8875f02b65fa5eeaf44290a9167fbcdc5cd092b638c3709af75264","schema_version":"1.0","event_id":"sha256:ff8507065a8875f02b65fa5eeaf44290a9167fbcdc5cd092b638c3709af75264"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:2V3EVAYXML6EK42FMN5D7LPHWG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Oreo: Detection of Clones in the Twilight Zone","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SE","authors_text":"Cristina Lopes, Farima Farmahinifarahani, Pierre Baldi, Vaibhav Saini, Yadong Lu","submitted_at":"2018-06-15T07:35:42Z","abstract_excerpt":"Source code clones are categorized into four types of increasing difficulty of detection, ranging from purely textual (Type-1) to purely semantic (Type-4). Most clone detectors reported in the literature work well up to Type-3, which accounts for syntactic differences. In between Type-3 and Type-4, however, there lies a spectrum of clones that, although still exhibiting some syntactic similarities, are extremely hard to detect -- the Twilight Zone. Most clone detectors reported in the literature fail to operate in this zone. We present Oreo, a novel approach to source code clone detection that"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.05837","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":"2026-05-17T23:56:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PEhucy1slpmj/c+Gbpx1IkwhRbml0aJG/rSTTRGklmME14p1yQnmkN6IaE7NLh3GGuOYL2FJbAE7m7s0kUhgDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T04:14:26.472805Z"},"content_sha256":"225ba9f1b09297e8cba565f8c4acfa36b58fc45b11cb2eae35d64223c72f4fd9","schema_version":"1.0","event_id":"sha256:225ba9f1b09297e8cba565f8c4acfa36b58fc45b11cb2eae35d64223c72f4fd9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2V3EVAYXML6EK42FMN5D7LPHWG/bundle.json","state_url":"https://pith.science/pith/2V3EVAYXML6EK42FMN5D7LPHWG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2V3EVAYXML6EK42FMN5D7LPHWG/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":"2026-05-25T04:14:26Z","links":{"resolver":"https://pith.science/pith/2V3EVAYXML6EK42FMN5D7LPHWG","bundle":"https://pith.science/pith/2V3EVAYXML6EK42FMN5D7LPHWG/bundle.json","state":"https://pith.science/pith/2V3EVAYXML6EK42FMN5D7LPHWG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2V3EVAYXML6EK42FMN5D7LPHWG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:2V3EVAYXML6EK42FMN5D7LPHWG","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":"2bdce20283130d2e457c82310785523fba6cf94275a967248d8bc8447ae1538f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2018-06-15T07:35:42Z","title_canon_sha256":"c4f81725648d74205c8decc60a8e2ca12924d588737323b1c20e2540ac1f0291"},"schema_version":"1.0","source":{"id":"1806.05837","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.05837","created_at":"2026-05-17T23:56:29Z"},{"alias_kind":"arxiv_version","alias_value":"1806.05837v1","created_at":"2026-05-17T23:56:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.05837","created_at":"2026-05-17T23:56:29Z"},{"alias_kind":"pith_short_12","alias_value":"2V3EVAYXML6E","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2V3EVAYXML6EK42F","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2V3EVAYX","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:225ba9f1b09297e8cba565f8c4acfa36b58fc45b11cb2eae35d64223c72f4fd9","target":"graph","created_at":"2026-05-17T23:56:29Z","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":"Source code clones are categorized into four types of increasing difficulty of detection, ranging from purely textual (Type-1) to purely semantic (Type-4). Most clone detectors reported in the literature work well up to Type-3, which accounts for syntactic differences. In between Type-3 and Type-4, however, there lies a spectrum of clones that, although still exhibiting some syntactic similarities, are extremely hard to detect -- the Twilight Zone. Most clone detectors reported in the literature fail to operate in this zone. We present Oreo, a novel approach to source code clone detection that","authors_text":"Cristina Lopes, Farima Farmahinifarahani, Pierre Baldi, Vaibhav Saini, Yadong Lu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2018-06-15T07:35:42Z","title":"Oreo: Detection of Clones in the Twilight Zone"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.05837","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:ff8507065a8875f02b65fa5eeaf44290a9167fbcdc5cd092b638c3709af75264","target":"record","created_at":"2026-05-17T23:56:29Z","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":"2bdce20283130d2e457c82310785523fba6cf94275a967248d8bc8447ae1538f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2018-06-15T07:35:42Z","title_canon_sha256":"c4f81725648d74205c8decc60a8e2ca12924d588737323b1c20e2540ac1f0291"},"schema_version":"1.0","source":{"id":"1806.05837","kind":"arxiv","version":1}},"canonical_sha256":"d5764a831762fc457345637a3fade7b1ba6bbc86d18f49bfa5337b2c4788cc77","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5764a831762fc457345637a3fade7b1ba6bbc86d18f49bfa5337b2c4788cc77","first_computed_at":"2026-05-17T23:56:29.756090Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:29.756090Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HXa/hlLi4CHkL1uoJDy+I+rJTlcZX1DsQQ9Qj0P8QgnTOSyAJ8d8qou2q3GQiB33Axazty9gb2b8QhYs2OIKAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:29.756533Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.05837","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ff8507065a8875f02b65fa5eeaf44290a9167fbcdc5cd092b638c3709af75264","sha256:225ba9f1b09297e8cba565f8c4acfa36b58fc45b11cb2eae35d64223c72f4fd9"],"state_sha256":"23f073d00806feb273472569eff508d9aa07208db2d133bcd965ef5e47b6b38c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y/KBG824A/9cv+wxGboj+UG1htmurFXDAl/jXU1iltiCnpM9kW9V0Uwb3mkBa9BfV9hk4PBaQFSO+n7h2HyiCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T04:14:26.476101Z","bundle_sha256":"28404ad1042b69fba474164cfe0fbe539f712cbebe6306c1c0eb7fd28e83b410"}}