원래 이름 기록: ÖNDER LEVENTOGLU

A computer-implemented system that reduces and resists computationally generated fraudulent reviews by enforcing aspect-level decomposition with evidence requirements, multi-tier cryptographic verification, and deterministic trust scoring. Reviewer tiers (public, independent reviewer, independent professional reviewer) use verifiable credentials, zero-knowledge purchase proofs, and device or platform attestation. Evidence gates apply fixed, monotonic transformations; mandatory-evidence aspects yield zero contribution absent a required artifact. A finite-state dialog protocol with immutable timer fields enforces typed, aspect-bound objections. A Consumer Trust Board employing threshold signatures issues binding decisions affecting Consumer Trust Score computation with bounded retro-adjustment. A certification registry maintains credentials and sanctions that calibrate weighting. Non-instrumented submissions are badge-ineligible and weight-capped. Uniqueness keys prevent double counting. Dialog records are version-chained and batch-anchored via collision-resistant commitments. All computations use parameters from a versioned configuration to ensure deterministic reproducibility.

A privacy-preserving location verification system computes distance to venue coordinates locally on a user device, maps the distance to discrete proximity categories comprising at least three categories, and generates a coordinate-free digitally signed attestation containing only category information without coordinates, distances, or any encrypted, hashed, obfuscated, or otherwise reversible representation of geographic coordinates. A verification server validates the signature and derives proximity trust solely from the category, being unable to reconstruct coordinates due to the many-to-one mapping where multiple distinct locations produce identical attestations. The system never transmits coordinates in any form. Embodiments include trusted execution environment isolation, multi-modal positioning, zero-knowledge proofs, and differential privacy.