Scytalex builds PCRZERO, a verification API for hardware attestation. PCRZERO evaluates TPM and enclave boot measurements (PCRs) against customer policy and returns dual-signed receipts (Ed25519 plus post-quantum ML-DSA-44) that customers can verify offline, without trusting our service. Usage is metered into a tamper-evident, publicly anchored ledger, so customers can reproduce their own bills. Built for platform, security, and confidential-computing teams that need attestation decisions they can prove, not just trust.