Custorian: A Compliance Standard for Child Digital Safety

An open compliance standard for child digital safety, modelled on PCI-DSS and EPEAT. Defines 137 auditable controls across six domains, an open API specification (CAS), and a tiered certification programme. Mandates on-device detection architectures to resolve the tension between child protection and privacy preservation. Pre-publication draft inviting scrutiny from policymakers, regulators, standards bodies, researchers, and platform trust and safety teams.