Abstract
1. Abstract Traditional digital authentication relies on static biometric templates, rendering systems critically vulnerable to advanced generative simulation and data exfiltration. Ethelgard LLC presents the Linchpin Protocol: a decentralized, hardware-anchored identity infrastructure utilizing Dynamic Biometric Entropy (DBE). By synthesizing real-time physiological telemetry—specifically Non-Linear Heart Rate Variability (HRV)—into ephemeral cryptographic session keys, the protocol eliminates biological data persistence. The framework is sustained by a continuous "Tri-Harvesting" power architecture, featuring a textile-embedded, AMC-isolated rectenna array for ambient RF and thermal energy capture. Operating autonomously from grid power, the Ethelgard interface executes Zero-Knowledge Proofs (ZK-SNARKs) for secure, on-ledger (XRPL) human authentication and smart-contract execution, effectively neutralizing synthetic AI spoofing.
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Recommended Citation
Baker, Jonathan S., "The Linchpin Protocol:", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/9728
Description: > "Supplemental Appendix A for the Linchpin Protocol (Ethelgard LLC). This technical disclosure outlines the proprietary engineering schematics, mathematical entropy routing, and Zero-Knowledge (ZK) ledger integration required to execute decentralized, battery-free biometric authentication. The document establishes definitive prior art for three core systems: The Dynamic Biometric Entropy (DBE) data flow, utilizing Non-Linear Heart Rate Variability (HRV) for ephemeral cryptographic key generation. The hardware topography of an Artificial Magnetic Conductor (AMC) isolated rectenna array for high-efficiency, on-body ambient RF harvesting. The exact zk-SNARK payload routing required for secure, Zero-Knowledge smart-contract execution on the XRP Ledger (XRPL). This architecture proves the viability of continuous, grid-independent human verification without biological data persistence."