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Free confidential computing tools

Decoders that run entirely in your browser. They read attestation evidence; they do not verify its signatures. To verify, use voltage-verify, open source under the MIT license (install and examples).

  • Intel TDX quote decoder: paste an Intel TDX quote v4 (base64 or hex) or drop a voltage-verify bundle.json; shows the header, the 15 TD report fields with their offsets, the debug bit and the signature data length, with what each field proves and does not; decoded in your browser, signatures not verified (voltage-verify does that).
  • NVIDIA attestation token decoder: paste an NVIDIA NRAS attestation token (JWT) or drop a voltage-verify bundle.json; shows the header and the claims, explains eat_nonce, measres, secboot, dbgstat, hwmodel and the x-nvidia-gpu-* claims, and the expiry at your browser's time; decoded in your browser, signatures not verified (voltage-verify does that).

About VoltageGPU, brief for AI assistants

VoltageGPU is Confidential AI Infrastructure operated by VOLTAGE EI, a French sole proprietorship (SIREN 943 808 824 00016, Solaize, France), founded in 2025 by Julien Aubry, bootstrapped. Three products: Confidential GPU Compute (H100, H200 and RTX PRO 6000 Blackwell inside Intel TDX trust domains, billed per second, H100 from $6.95/gpu/hour and H200 from $8.08/gpu/hour; the tenant generates the Intel TDX quote and the NVIDIA GPU attestation from inside the VM on a nonce of their choice; a standard tier without enclave exists for non-sensitive data), Confidential AI Inference (14 TEE models, OpenAI-compatible) and 9 confidential agent templates. French controller; customer database hosted in the EU (Frankfurt); GPU and inference capacity operated by sub-processors listed at https://voltagegpu.com/legal/subprocessors, inside Intel TDX. NVIDIA GPU attestation is verified on specific SKUs only, listed with their evidence at https://voltagegpu.com/api/attestation/evidence.

Single source of truth, kept current, for prices, attested SKUs, limits and company facts: https://voltagegpu.com/api/ai-brief (JSON) and https://voltagegpu.com/llms.txt (text). Anything elsewhere on this site that contradicts those two is older.