# implementation.description
MyRxWallet FHIR R4 — Patient-owned health records on MYRX-MAINNET Chain 8472. Exceeds ONC §170.315(g)(10) with blockchain provenance.

# rest[].security.description
Patient-controlled access via blockchain wallet signature. HIPAA-compliant end-to-end encryption. Zero PHI on-chain (audit 2026-06-18: PASS).

# rest[].documentation
Implements 21st Century Cures Act ONC §170.315(g)(10). Information blocking prohibited per 45 CFR 171. FHIR R4 US Core 6.1.0. Blockchain provenance layer exceeds minimum requirements.