The part that matters to you: submit any GEMM workload up to 256×256 and we return the result plus a cryptographic receipt — a SHA-256 commitment chain folded into our ledger state, verifiable by anyone forever. Free, no token, no signup beyond an API key we generate in seconds.
Honest limits: we verify GEMM + elementwise activations (GELU/sigmoid/ tanh/exp), not full transformer graphs yet. Attention is on the roadmap. The verification cost curve is published (615ms at 64³ → 157s at 1024³) — we priced our own clamp and labeled every tier.
The logs: [pouw-verify] CONFIRMED lines, epoch crossings, claim-decrees folded into the ledger — every claim has a receipt.
Live dashboard: http://3.237.91.235:32233 The evidence ledger (250+ owned defects, 250+ laws): github.com/sarinsk629-blip/hsma-core