Blog.

Writing on privacy-preserving AI, PII tokenisation, verifiable cryptographic receipts and GDPR — how CloakAPI keeps personal data out of AI providers, and how we build it.

Verifying receipts without trusting us.
Engineering

Verifying receipts without trusting us.

How ECDSA-P-256 + a public JWKS lets your auditor verify a receipt offline when one was issued, with no CloakAPI account.

Shamir 3-of-3 key custody: why we built our own.
Engineering

Shamir 3-of-3 key custody: why we built our own.

Why no Packagist library solved our byte-compatibility requirement, and how we verified the GF(2^8) arithmetic.

Why we started CloakAPI.
Company

Why we started CloakAPI.

On the gap between "we take privacy seriously" as a marketing claim and privacy as an engineering invariant.

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