Forensic report: top Chinese AI models carry fingerprint of export-banned NVIDIA Blackwell GPUs
TinfoilTricorn · x · 2026-11-13
Will DePue has published forensic analysis claiming conclusive evidence that DeepSeek, Moonshot AI, MiniMax, and Ant Group built their newest models on NVIDIA's Blackwell chips, which are barred from export to China.
Method: A model's initial weight values follow a pattern determined by the exact GPU used; each GPU-plus-seed combination produces a unique hardware fingerprint that survives training into the published weights. The researcher recovers those traces and searches for hardware configurations that reproduce them.
Key findings:
- Six models released by these companies since April 2026 match Blackwell hardware, while earlier models from the same companies match the older Hopper generation.
- For DeepSeek-V4-Flash and Kimi K3, the match was also confirmed on physical Blackwell chips.
- Evidence comes entirely from published weights, not leaks; the report notes this establishes hardware access but not chip location, how access was obtained, or whether export controls were violated.
- Restricted AMD hardware is the only alternative identified, excluded for DeepSeek-V4-Flash and deemed very unlikely for the rest.
US officials and press had previously alleged DeepSeek and Moonshot used Blackwell chips without publishing technical evidence.
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