{"evidence":{"caseId":"LS-4EFA12A7","sealVersion":"2","canonicalization":"RFC8785","hashAlgo":"sha256","subject":{"name":"Ristorante Fittizio (DEMO)","country":"DE"},"scope":{"reviewCount":9,"platforms":["google"],"dateRange":{"from":"2026-01-14T12:05:00Z","to":"2026-06-21T10:03:00Z"}},"summary":{"counts":{"clean":5,"watch":0,"suspicious":0,"likely_fake":4,"confirmed_fake":0,"not_analyzed":0},"displayedRating":2.8,"adjustedRating":4.2},"perReview":[{"disposition":"auto_clear","dispositionReason":"low score (4) and no medium+ signal","exhibitId":"EX-001","reviewId":"demo_1","platform":"google","authorName":"Rezensent 1","rating":5,"publishedDate":"2026-01-14T12:05:00Z","textExcerpt":"Fantastische Pasta, aufmerksamer Service. Kommen wieder!","contentHash":"c8966a940efd426eb9c12fb9eac634081cf5e3547ff2919e059a35bf7d1cd82b","fakeScore":4,"verdict":"clean","signals":[]},{"disposition":"auto_clear","dispositionReason":"low score (4) and no medium+ signal","exhibitId":"EX-002","reviewId":"demo_2","platform":"google","authorName":"Rezensent 2","rating":4,"publishedDate":"2026-02-20T19:40:00Z","textExcerpt":"Gutes Essen, etwas laut am Wochenende, aber empfehlenswert.","contentHash":"78cbbf30c5a20df5b2e55168000a3cde4b148438911b277dc5cefaa5f26a9b74","fakeScore":4,"verdict":"clean","signals":[]},{"disposition":"auto_clear","dispositionReason":"low score (4) and no medium+ signal","exhibitId":"EX-003","reviewId":"demo_3","platform":"google","authorName":"Rezensent 3","rating":5,"publishedDate":"2026-03-28T13:22:00Z","textExcerpt":"Bestes Tiramisu in Berlin, ehrlich.","contentHash":"22292eff0bd0967d582a67e48956f93b41a2940fdf8e599d135eab9c89b9d23d","fakeScore":4,"verdict":"clean","signals":[]},{"disposition":"auto_clear","dispositionReason":"low score (4) and no medium+ signal","exhibitId":"EX-004","reviewId":"demo_4","platform":"google","authorName":"Rezensent 4","rating":5,"publishedDate":"2026-05-06T20:15:00Z","textExcerpt":"Nette Atmosphäre, faire Preise.","contentHash":"b17b330709b9e00183982bc8b804f1e6f9fc62a2aefa8d9a590a3f12ee17332c","fakeScore":4,"verdict":"clean","signals":[]},{"disposition":"auto_clear","dispositionReason":"low score (12) and no medium+ signal","exhibitId":"EX-005","reviewId":"demo_5","platform":"google","authorName":"Rezensent 5","rating":2,"publishedDate":"2026-06-02T18:30:00Z","textExcerpt":"Pizza war leider kalt als sie ankam. Schade, sonst nett.","contentHash":"530230237ddbd8a327b6808b916cc51b751926620c26254c0f1d0649124ebf17","fakeScore":12,"verdict":"clean","signals":[]},{"disposition":"auto_contest","dispositionReason":"score 84 corroborated by 3 independent evidence families (coordination, stylometry, account)","exhibitId":"EX-006","reviewId":"demo_20","platform":"google","authorName":"Rezensent 20","rating":1,"publishedDate":"2026-06-20T18:02:00Z","textExcerpt":"Absolut schrecklich, niemals wieder, Finger weg!","contentHash":"8602ca831dc45b52e3da67b9c0da8acd1fb3ce96062a07bb9f7a8c4dfa2b6b72","fakeScore":84,"verdict":"likely_fake","signals":[{"type":"coordinated_negative_burst","severity":78,"confidence":0.86},{"type":"stylometric_match","severity":65,"confidence":0.8},{"type":"burner_account","severity":55,"confidence":0.75}]},{"disposition":"auto_contest","dispositionReason":"score 84 corroborated by 3 independent evidence families (coordination, stylometry, account)","exhibitId":"EX-007","reviewId":"demo_21","platform":"google","authorName":"Rezensent 21","rating":1,"publishedDate":"2026-06-20T18:44:00Z","textExcerpt":"Schrecklicher Laden, Finger weg, niemals wieder!","contentHash":"00295b715dd67b207cd0422b1962b8c93113bad2e5f9f648a0269321b2b57bb7","fakeScore":84,"verdict":"likely_fake","signals":[{"type":"coordinated_negative_burst","severity":78,"confidence":0.86},{"type":"stylometric_match","severity":65,"confidence":0.8},{"type":"burner_account","severity":55,"confidence":0.75}]},{"disposition":"auto_contest","dispositionReason":"score 84 corroborated by 3 independent evidence families (coordination, stylometry, account)","exhibitId":"EX-008","reviewId":"demo_22","platform":"google","authorName":"Rezensent 22","rating":1,"publishedDate":"2026-06-21T09:15:00Z","textExcerpt":"Niemals wieder, absolut schrecklich, Finger weg!","contentHash":"46f3b90f14a8923082f6e9a8009425dc68836453dfd3a1379902ebb63ac27a38","fakeScore":84,"verdict":"likely_fake","signals":[{"type":"coordinated_negative_burst","severity":78,"confidence":0.86},{"type":"stylometric_match","severity":65,"confidence":0.8},{"type":"burner_account","severity":55,"confidence":0.75}]},{"disposition":"auto_contest","dispositionReason":"score 84 corroborated by 3 independent evidence families (coordination, stylometry, account)","exhibitId":"EX-009","reviewId":"demo_23","platform":"google","authorName":"Rezensent 23","rating":1,"publishedDate":"2026-06-21T10:03:00Z","textExcerpt":"Finger weg von diesem schrecklichen Laden, nie wieder!","contentHash":"024420fa47ee5d5735df5b567a122007ff8d07505f47892bf8dad0324b396e7e","fakeScore":84,"verdict":"likely_fake","signals":[{"type":"coordinated_negative_burst","severity":78,"confidence":0.86},{"type":"stylometric_match","severity":65,"confidence":0.8},{"type":"burner_account","severity":55,"confidence":0.75}]}],"methodology":[{"name":"AI-generated-text analysis","desc":"Probability that a review’s text was produced by a language model, via independent detectors. Corroborative only — never used in isolation to reach a conclusion."},{"name":"Stylometric fingerprinting","desc":"Whether multiple reviews under different names share an authorship fingerprint (vocabulary, syntax, rhythm), indicating a single hand behind many identities."},{"name":"Reviewer-network analysis","desc":"Cross-review author relationships and persona patterns that distinguish organic reviewers from coordinated accounts."},{"name":"Temporal & coordinated-burst analysis","desc":"Unnatural timing clusters and synchronized posting consistent with an orchestrated campaign rather than organic arrival."},{"name":"Sentiment–rating incongruity","desc":"Mismatch between the emotional content of the text and the star rating, a common artifact of fabricated reviews."},{"name":"Photo forensics","desc":"EXIF metadata, perceptual hashing and reverse-image checks to flag recycled, stock or manipulated images attached to reviews."},{"name":"Signal fusion","desc":"An ensemble that combines the above into a single 0–100 authenticity-risk score and a calibrated verdict band, with hard-fail overrides for unambiguous artifacts (e.g. embedded prompt-injection text)."}],"limitations":["These signals indicate likelihood, not proof. No method — automated or human — identifies an inauthentic review with certainty.","Peer-reviewed research shows AI-generated review text is now statistically indistinguishable from human writing: in a 2025 study human raters averaged 50.8% accuracy at telling real from AI-generated product reviews (chance is 50%), and the best-performing language model (GPT-4o) reached only 50.0% (Meng et al., \"Large Language Models as Hidden Persuaders\", arXiv:2506.13313, 2025). AI-text signals are therefore corroborative only and are never used alone to reach a verdict.","AI-text detectors have a documented bias against non-native English writing: across seven commercial GPT detectors an average of 61.3% of non-native (TOEFL) essays were misclassified as AI-generated, while native-English writing was classified near-perfectly (Liang et al., \"GPT detectors are biased against non-native English writers\", Patterns 4(7):100779, 2023). Such signals are down-weighted within multi-signal convergence and this caveat is disclosed rather than hidden.","A one-shot audit without longitudinal author history runs the network and persona signals in a degraded mode; conclusions rely more heavily on content-intrinsic signals.","Reviews that were assessed and cleared are listed as exceptions. Their inclusion is part of the integrity of the method, not an omission.","This report is prepared to evidentiary standards and is designed to be defensible. Whether it is admitted, and the weight it is given, is determined by the tribunal — not by the analysis provider."],"toolVersions":{"engine":"0.1.0","product":"0.1.0","node":"v20.19.5"}},"integrityHash":"550ba3a56018f6b75df215b5a1ec44d0e50462f49de7d407af49381309367387","datasetHash":"cd37de1e0f30b98546a22239c289fa878c3868c9c56c4d39b8486c326c70fa83","timestampTokenB64":null}