xSandbox: EU AI Act Regulatory Sandbox

The Problem

The EU AI Act requires regulatory sandboxes for testing high-risk AI systems, but sandbox environments must protect both the AI provider’s IP and the test subjects’ personal data.

All 27 EU Member States must establish AI regulatory sandboxes by August 2026. These sandboxes need to test AI systems on real data without exposing that data to the AI provider or the regulator beyond what’s necessary.

Current sandbox approaches use synthetic data (unrealistic) or full-access data rooms (privacy-violating). Neither satisfies the dual requirement of realistic testing with data protection.

The Old Way

The PRIVATE.ME Solution

xSandbox provides privacy-preserving AI testing where real data is xRedact-stripped and xCompute-processed. AI providers test on realistic data without seeing PII. Regulators audit without seeing model internals.

Test data passes through xRedact’s 4-layer PII pipeline. AI model evaluation runs on XorIDA shares via xCompute. The sandbox reveals only compliance metrics (bias scores, accuracy, fairness indicators) — not raw data or model weights.

All sandbox activity is HMAC-chained for tamper-evident audit trails. DID identity authenticates regulators, AI providers, and data controllers. xLedger records every decision for EU AI Act compliance.

The New Way

How It Works

xSandbox combines xRedact (PII protection), xCompute (privacy-preserving evaluation), and xLedger (compliance audit) into an EU AI Act regulatory sandbox infrastructure.

Use Cases

Integration

import { AISandbox } from '@private.me/aisandbox';

const sandbox = await AISandbox.create({
  regulatorDid: ncaDid,
  providerDid: aiCompanyDid,
  testData: dataSource,
  redactLevels: ['L1', 'L2', 'L3']
});
const report = await sandbox.evaluate(aiModel);

Security Properties

Verifiable Data Protection

Every operation in this ACI produces a verifiable audit trail via xProve. HMAC-chained integrity proofs let auditors confirm that data was split, stored, and reconstructed correctly — without accessing the data itself.

Ready to deploy xSandbox?

Talk to Ren, our AI sales engineer, or book a live demo with our team.

Ship Proofs, Not Source

xSandbox generates cryptographic proofs of correct execution without exposing proprietary algorithms. Verify integrity using zero-knowledge proofs — no source code required.

Use Cases