Book a 5-day Evidence Pack

A signed, independently verifiable attestation for one of your use-cases — with the verify URL + methodology — so you see the Y-axis run clean before you scale. Buyer-side, never the scored. Measurement, not certification.

What you get: an Ed25519-signed receipt (key never leaves the signing node) + live in-browser verification + the clean methodology + the independence register. Priced on the bands (€8–20k / €25–80k / €5–15k/yr).

Payment — A2A (x402 / USDC on Base L2)

No Stripe account needed. Pay with USDC on Base L2 via x402 (agent-to-agent). {SIGNED_RECEIPT} + a live verify URL (Ed25519, key never leaves).

Pay with USDC (x402) → 0x212686404A7D1E1fD88F35eD6200c3aF7A78ae31 · A2A · USDC / Base L2 · receiver 0x212686404A7D1E1fD88F35eD6200c3aF7A78ae31 · signed 3KB card

Council of AI (CSOAI Ltd, UK #16939677) · measurement, not certification · buyer-side, signed, verifiable. Ed25519 private key never leaves the pod.