Trust
The trust stack: identity, evidence, issuance, portability.
-
Assessment validity is the new security perimeter
Generative AI collapsed take-home assessment validity, and proctoring is a failed patch — bypassable and biased. The right frame is security engineering: assessment integrity is a custody problem, not a policing problem, and the perimeter moved to the evidence.
-
Why we didn't use a blockchain: sealed-key custody and the issuer-identity problem
The credentialing space defaults to 'blockchain!' as the trust answer. The honest negative result, from having built a real issuer: the problem a chain solves isn't the problem a credential has. The hard part is issuer identity and key custody, and no consensus protocol makes that decision for you.
-
The proctoring bias tax — and why it falls hardest on neurodivergent learners
Automated proctoring doesn't just fail at integrity — it manufactures false-positive flags against the exact learners credentialing claims to serve, and a credential earned under a biased proctor is a lower-trust credential.
-
The credentialing trust stack
Why most micro-credentials die at the employer-trust checkpoint — and the five layers a credential must stack to actually be trusted: identity, assessment integrity, evidence, issuance, and portability.