{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:56X75SUA7O5UJYMMCPUF776FSH","short_pith_number":"pith:56X75SUA","canonical_record":{"source":{"id":"2605.21713","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-20T20:19:16Z","cross_cats_sorted":[],"title_canon_sha256":"be2676458f742b6d9765b2938fbe1c0871c01dba05fa7cdbe4cd60340335a8d3","abstract_canon_sha256":"5bb21515e41aa76f7914fcc86590d87659511ca15dd94aa91c28f90f972accbd"},"schema_version":"1.0"},"canonical_sha256":"efaffeca80fbbb44e18c13e85fffc591cfc8c132c5aef6ea08862289c801eb2c","source":{"kind":"arxiv","id":"2605.21713","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21713","created_at":"2026-05-22T01:03:29Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21713v1","created_at":"2026-05-22T01:03:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21713","created_at":"2026-05-22T01:03:29Z"},{"alias_kind":"pith_short_12","alias_value":"56X75SUA7O5U","created_at":"2026-05-22T01:03:29Z"},{"alias_kind":"pith_short_16","alias_value":"56X75SUA7O5UJYMM","created_at":"2026-05-22T01:03:29Z"},{"alias_kind":"pith_short_8","alias_value":"56X75SUA","created_at":"2026-05-22T01:03:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:56X75SUA7O5UJYMMCPUF776FSH","target":"record","payload":{"canonical_record":{"source":{"id":"2605.21713","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-20T20:19:16Z","cross_cats_sorted":[],"title_canon_sha256":"be2676458f742b6d9765b2938fbe1c0871c01dba05fa7cdbe4cd60340335a8d3","abstract_canon_sha256":"5bb21515e41aa76f7914fcc86590d87659511ca15dd94aa91c28f90f972accbd"},"schema_version":"1.0"},"canonical_sha256":"efaffeca80fbbb44e18c13e85fffc591cfc8c132c5aef6ea08862289c801eb2c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-22T01:03:29.023582Z","signature_b64":"H3jmwMHTx23yd4Fz4Aw6XuRshHM2ybylRQHibTGAo8FfyVF04UpOmM/vKBZnRiWJrYjmsVtpffwqOfmJfUtOCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"efaffeca80fbbb44e18c13e85fffc591cfc8c132c5aef6ea08862289c801eb2c","last_reissued_at":"2026-05-22T01:03:29.023058Z","signature_status":"signed_v1","first_computed_at":"2026-05-22T01:03:29.023058Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.21713","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":"2026-05-22T01:03:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Pz/PTFyKn2cGtEthMZkPUMSc4TZmYhMO5N6MPzBuHbVRGHOaXELH1rjZRAs/m/BVO9CQnpdnFlWIXCJ+KtMDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:21:21.151512Z"},"content_sha256":"adc0627d6b713cfaf8e3df795485f88d781b8ed5295586a00c770b58d68f9201","schema_version":"1.0","event_id":"sha256:adc0627d6b713cfaf8e3df795485f88d781b8ed5295586a00c770b58d68f9201"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:56X75SUA7O5UJYMMCPUF776FSH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sem-Detect: Semantic Level Detection of AI Generated Peer-Reviews","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Aditya Oke, Andr\\'e V. Duarte, Arlindo L. Oliveira, Brian Tufts, Fei Fang, Lei Li","submitted_at":"2026-05-20T20:19:16Z","abstract_excerpt":"How can we distinguish whether a peer review was written by a human or generated by an AI model? We argue that, in this setting, authorship should not be attributed solely from the textual features of a review, but also from the ideas, judgments, and claims it expresses. To this end, we propose Sem-Detect, an authorship detection method for peer reviews that operationalizes this principle by combining textual features with claim-level semantic analysis. Sem-Detect compares a target review against multiple AI-generated reviews of the same paper, leveraging the observation that different AI mode"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21713","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.21713/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-05-22T01:03:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3KLIJzvTiiAMdU7427wVatCQbJ3j76HX2p5nWR9JjEF8K9XO+9NhO4G07Il95LR50C56li/baKpdbu7XzQraDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:21:21.151934Z"},"content_sha256":"f62ad577b09ef60125ba4c740bcbc17ee22cadb84ab48b9c1b27fea5c2ae7741","schema_version":"1.0","event_id":"sha256:f62ad577b09ef60125ba4c740bcbc17ee22cadb84ab48b9c1b27fea5c2ae7741"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/56X75SUA7O5UJYMMCPUF776FSH/bundle.json","state_url":"https://pith.science/pith/56X75SUA7O5UJYMMCPUF776FSH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/56X75SUA7O5UJYMMCPUF776FSH/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":"2026-06-03T17:21:21Z","links":{"resolver":"https://pith.science/pith/56X75SUA7O5UJYMMCPUF776FSH","bundle":"https://pith.science/pith/56X75SUA7O5UJYMMCPUF776FSH/bundle.json","state":"https://pith.science/pith/56X75SUA7O5UJYMMCPUF776FSH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/56X75SUA7O5UJYMMCPUF776FSH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:56X75SUA7O5UJYMMCPUF776FSH","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":"5bb21515e41aa76f7914fcc86590d87659511ca15dd94aa91c28f90f972accbd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-20T20:19:16Z","title_canon_sha256":"be2676458f742b6d9765b2938fbe1c0871c01dba05fa7cdbe4cd60340335a8d3"},"schema_version":"1.0","source":{"id":"2605.21713","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.21713","created_at":"2026-05-22T01:03:29Z"},{"alias_kind":"arxiv_version","alias_value":"2605.21713v1","created_at":"2026-05-22T01:03:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.21713","created_at":"2026-05-22T01:03:29Z"},{"alias_kind":"pith_short_12","alias_value":"56X75SUA7O5U","created_at":"2026-05-22T01:03:29Z"},{"alias_kind":"pith_short_16","alias_value":"56X75SUA7O5UJYMM","created_at":"2026-05-22T01:03:29Z"},{"alias_kind":"pith_short_8","alias_value":"56X75SUA","created_at":"2026-05-22T01:03:29Z"}],"graph_snapshots":[{"event_id":"sha256:f62ad577b09ef60125ba4c740bcbc17ee22cadb84ab48b9c1b27fea5c2ae7741","target":"graph","created_at":"2026-05-22T01:03:29Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2605.21713/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"How can we distinguish whether a peer review was written by a human or generated by an AI model? We argue that, in this setting, authorship should not be attributed solely from the textual features of a review, but also from the ideas, judgments, and claims it expresses. To this end, we propose Sem-Detect, an authorship detection method for peer reviews that operationalizes this principle by combining textual features with claim-level semantic analysis. Sem-Detect compares a target review against multiple AI-generated reviews of the same paper, leveraging the observation that different AI mode","authors_text":"Aditya Oke, Andr\\'e V. Duarte, Arlindo L. Oliveira, Brian Tufts, Fei Fang, Lei Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-20T20:19:16Z","title":"Sem-Detect: Semantic Level Detection of AI Generated Peer-Reviews"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.21713","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:adc0627d6b713cfaf8e3df795485f88d781b8ed5295586a00c770b58d68f9201","target":"record","created_at":"2026-05-22T01:03:29Z","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":"5bb21515e41aa76f7914fcc86590d87659511ca15dd94aa91c28f90f972accbd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2026-05-20T20:19:16Z","title_canon_sha256":"be2676458f742b6d9765b2938fbe1c0871c01dba05fa7cdbe4cd60340335a8d3"},"schema_version":"1.0","source":{"id":"2605.21713","kind":"arxiv","version":1}},"canonical_sha256":"efaffeca80fbbb44e18c13e85fffc591cfc8c132c5aef6ea08862289c801eb2c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"efaffeca80fbbb44e18c13e85fffc591cfc8c132c5aef6ea08862289c801eb2c","first_computed_at":"2026-05-22T01:03:29.023058Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-22T01:03:29.023058Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H3jmwMHTx23yd4Fz4Aw6XuRshHM2ybylRQHibTGAo8FfyVF04UpOmM/vKBZnRiWJrYjmsVtpffwqOfmJfUtOCg==","signature_status":"signed_v1","signed_at":"2026-05-22T01:03:29.023582Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.21713","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:adc0627d6b713cfaf8e3df795485f88d781b8ed5295586a00c770b58d68f9201","sha256:f62ad577b09ef60125ba4c740bcbc17ee22cadb84ab48b9c1b27fea5c2ae7741"],"state_sha256":"9c89f62e14791e86b0e7830ba07974d7109dc35830366f5e0bf956156ed47ee2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BYxXrZ2y1X3Z/mjNM6NlWY8XQPoEzVTRRnwZ2/nZAddzvdW6gD3oBetUACi/cvv8RSZR+XVy4sHsPTa4cDqgBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T17:21:21.153959Z","bundle_sha256":"8acfbd9d7fd12d91c234770a74080407ab100a7fba599faf6866423b91c2b634"}}