AFIR™ · Attestation-as-a-Sidecar

Want to SideCar your key?

You already run your own model on your own stack. AFiR did not route it — and that is fine. Hand us the input and output and we seal and dual-sign it with ML-DSA-65 (NIST FIPS 204) + Ed25519, then hand back a receipt anyone can verify. Zero routing. Zero model change. The output becomes signed inference.

How the sidecar works

Three calls. Your output is now verifiable.

No re-architecture, no migration. The sidecar sits beside whatever you already ship and attests the inference after the fact.

01

Run inference your way

OpenAI, Anthropic, a local model, anything. AFiR never touches your routing or your weights.

02

POST the input & output

Send {input, output} to the sidecar. We seal it and dual-sign in tens of milliseconds.

03

Keep the receipt

A merkle root, an ML-DSA-65 + Ed25519 signature, and a verify URL. Verify offline or by link, forever.

Live · keyless · running on production

Sign an output right now.

This demo signs with Hive’s key so you can try it with no signup. Bringing your own key — the actual SideCar — is the paid feature below.

Your inference POST /v1/afir/sign-demo
Signs on production. Keyless demo, rate-limited.
Signed receipt idle
// Run the demo to see a live ML-DSA-65 + Ed25519 receipt.
The gap

Logs are assertions. A signature is not.

Every output your stack produces today is unsigned. When something is challenged — a contract clause, a claims decision, a strategy call — you have a log that says it happened, not proof of what the model actually saw and said. Reconstruction takes weeks. A SideCar receipt settles it in one link: an ML-DSA-65 + Ed25519 signature over the exact input and output, anchored to a USDC receipt on Base.

ML-DSA-65 · NIST FIPS 204 Ed25519 · classical co-sign Tens of ms · seal & sign Anchored · USDC on Base Verify offline or by URL Patent Pending
SideCar your key

Start free on the Hive key. SideCar your own when you mean it.

The demo above uses Hive’s key. To sign under your key — so the receipt proves you signed it — that is the SideCar.

Free trial

Hive-key signing

Email only. 25 runs, 7-day window. No card.
  • Sign real outputs with Hive’s ML-DSA-65 + Ed25519 key
  • Verifiable receipts with a shareable verify URL
  • Near-zero friction — mint a key with your email
  • Perfect for proving the flow end-to-end
Mint a free key →
SideCar · bring your own key

BYOK signing

Metered premium. Sign under your own keypair.
  • Receipts signed by your key — verify resolves to your public key
  • Provenance you control, not ours
  • Same seal-and-sign path, your identity on the proof
  • Metered usage — billed on what you sign
SideCar your key →