{"case_id":"s1t7d-2025-02-01-001-s3","agent":"geo","model":"deterministic-cluster-v1","verdict":"No","confidence_bps":9700,"tier":0,"reasoning":"Sybil / single-source concentration detected: top source accounts for 100.0% of all 30 reports (source_diversity=1, threshold >=80% rejects).","tool_calls":[],"attestation":null}