Nearly Orthogonal

Two random vectors in high dimensions are almost always near-orthogonal. Slide dimension d from 3 to 8192 and watch a sphere of random directions collapse onto the equator — the geometry behind DiFR's random-projection activation fingerprints.

3d scene WebGL · Three.js Machine Learning Cryptography Jul 15, 2026

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Nearly Orthogonal — drag to orbit the sphere · slide dimension d (3 → 8192) to watch the angles concentrate at 90° open artifact ↗

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Appears in

Machine Learning Cryptography Research

The Committed Sample: Activation Fingerprints for Verifiable LLM Inference

LLM non-determinism has been the blocker for output-based verification. DiFR commits to a random seed before inference — and activation fingerprints built from random orthogonal projections detect 4-bit quantization in just 2 tokens at AUC > 0.999.

Jun 23, 2026 8 min read ⬢ interactive