Signed, Verifiable Measurement for AI-Liability Underwriting

The parametric trigger the market says is missing — arXiv 2605.18784 — delivered as a signed, independently verifiable Art 50 / SB 315 evidence receipt. Buyer-side only. Never the scored.

Verify a live signed receipt View pricing

The buy-side window

Hook	Date	What the buyer needs
EU AI Act Art 50	live 2 Aug 2026	binary, machine-checkable evidence (disclosure/marking)
Illinois SB 315	audits Jan 2028	annual independent third-party frontier audit
EN 18286 / Art 17	uncited (OJEU)	conformity-preparation evidence scoring
Vietnam Decree 142	Mar/Sep 2027	mandatory 3rd-party certification evidence

What we deliver

Signed receipt

Ed25519-signed on a signing node (key never leaves),
embedding {sig, body_sha256, pubkey}. Verifies offline.

Live verification

Anyone verifies the proof in-browser, zero trust: csoai-verify.pages.dev/verify

Clean methodology

Refusal-tolerant, evict-first measurement. Base-beats-finetune + RAG findings as measured evidence.

Independence

Buyer/insurer/regulator-pays only. Never the scored. No issuer-pays trap.

Pricing

Document review

€8–20k

Evidence-quality scoring

Conformity-prep

€25–80k

Art 50 / SB 315 evidence scoring

Surveillance

€5–15k/yr

Re-measurement, continuous

Receipt / API

entry

Per-signed-receipt attestation

The proof is live

15 signed artifacts Ed25519 verified — pubkey bWbk52E47J6EkY4+pu0Hh/B1l1175AZoZsDEBr0EfWA=. The whole evidence estate attests in-browser.

Open the live verification page

Council of AI (CSOAI Ltd, UK #16939677) · measurement, not certification · buyer-side, signed, verifiable. Signed on the signing node; the Ed25519 private key never leaves the pod. PQC path: ML-DSA-65.